v1.2.3

v1.2.2
Reformat using black
2026-07-18 21:50:28 +02:00 · 2025-11-19 02:24:42 +03:00 · 2025-11-19 02:06:33 +03:00 · 2025-11-19 01:54:11 +03:00 · 2025-11-19 01:39:50 +03:00 · 2025-11-19 01:03:10 +03:00
17 changed files with 2978 additions and 859 deletions
@@ -1,3 +1,42 @@
+# 1.2.3
+- Same as 1.2.2, re-released to fix an issue with subtitle timing when using timestamp-based text files.
+
+# 1.2.2
+- **You can now voice your subtitle files!** Simply add `.srt`, `.ass` or `.vtt` files to generate timed audio. Alternatively, add a text file with timestamps in `HH:MM:SS` or `HH:MM:SS,ms` format to generate audio that matches the timestamps. See [here](https://github.com/denizsafak/abogen?tab=readme-ov-file#about-timestamp-based-text-files) for detailed instructions.
+    - New option: **"Use silent gaps between subtitles"**: Prevents unnecessary audio speed-up by letting speech continue into the silent gaps between subtitles.
+    - New option: **"Subtitle speed adjustment method"**: Choose how to speed up audio when needed:
+        - **TTS Regeneration (better quality):** Re-generates the audio at a faster speed for more natural sound.
+        - **FFmpeg Time-stretch (better speed):** Quickly speeds up the generated audio.
+- Added support for embedding cover images in M4B files. Abogen now automatically extracts cover images from EPUB and PDF files. You can also manually specify a cover image using the `<<METADATA_COVER_PATH:path>>` tag in your text file. (To prevent MPV from showing the cover image, you can add `audio-display=no` to your MPV config file.)
+- Fixed `[WinError 1114] A dynamic link library (DLL) initialization routine failed` error on Windows, pre-loading PyTorch DLLs before initializing PyQt6 to avoid DLL initialization errors, mentioned in #98 by @ephr0n.
+- Potential fix for `CUDA GPU is not available` issue, by ensuring PyTorch is installed correctly with CUDA support on Windows using the installer script.
+- Improvements in code and documentation.
+
+# 1.2.1
+- Upgraded Abogen's interface from PyQt5 to PyQt6 for better compatibility and long-term support.
+- Added tooltip indicators in queue manager to display book handler options (`Save chapters separately` and `Merge chapters at the end`) for queued items.
+- Added `Open processed file` and `Open input file` options for items in the queue manager, instead of just `Open file` option.
+- Added loading gif animation to book handler window.
+- Fixed light theme slider colors in voice mixer for better visibility (for non-Windows users).
+- Fixed subtitle word-count splitting logic for more accurate segmentation.
+- Improvements in code and documentation.
+
+# 1.2.0
+- Added `Line` option to subtitle generation modes, allowing subtitles to be generated based on line breaks in the text, by @mleg in #94.
+- Added a loading indicator to the book handler window for better user experience during book preprocessing.
+- Fixed `cannot access local variable 'is_narrow'` error when subtitle format `SRT` was selected, mentioned by @Kinasa0096 in #88.
+- Fixed folder and filename sanitization to properly handle OS-specific illegal characters (Windows, Linux, macOS), ensuring compatibility across all platforms when creating chapter folders and files.
+- Fixed `/` and `\` path display by normalizing paths.
+- Fixed book reprocessing issue where books were being processed every time the chapters window was opened, improving performance when reopening the same book.
+- Fixed taskbar icon not appearing correctly in Windows.
+- Fixed “Go to folder” button not opening the chapter output directory when only separate chapters were generated.
+- Improvements in code and documentation.
+
+# 1.1.9
+- Fixed the issue where spaces were deleted before punctuation marks while generating subtitles.
+- Fixed markdown TOC generation breaks when "Replace single newlines" is enabled.
+- Improvements in code and documentation.
+
 # 1.1.8
 - Added `.md` (Markdown) file extension support by @brianxiadong in PR #75
 - Added new option `Configure silence between chapters` that lets you configure the silence between chapters, mentioned by @lfperez1982 in #79
@@ -7,7 +7,9 @@
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![License: MIT](https://img.shields.io/badge/License-MIT-maroon.svg)](https://opensource.org/licenses/MIT)

-Abogen is a powerful text-to-speech conversion tool that makes it easy to turn ePub, PDF, text or markdown files into high-quality audio with matching subtitles in seconds. Use it for audiobooks, voiceovers for Instagram, YouTube, TikTok, or any project that needs natural-sounding text-to-speech, using [Kokoro-82M](https://huggingface.co/hexgrad/Kokoro-82M).
+<a href="https://trendshift.io/repositories/14433" target="_blank"><img src="https://trendshift.io/api/badge/repositories/14433" alt="denizsafak%2Fabogen | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
+
+Abogen is a powerful text-to-speech conversion tool that makes it easy to turn ePub, PDF, text, markdown, or subtitle files into high-quality audio with matching subtitles in seconds. Use it for audiobooks, voiceovers for Instagram, YouTube, TikTok, or any project that needs natural-sounding text-to-speech, using [Kokoro-82M](https://huggingface.co/hexgrad/Kokoro-82M).

 <img title="Abogen Main" src='https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/abogen.png' width="380"> <img title="Abogen Processing" src='https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/abogen2.png' width="380">

@@ -40,7 +42,8 @@ python -m venv venv
 venv\Scripts\activate

 # For NVIDIA GPUs:
-pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu128
+# We need to use an older version of PyTorch (2.8.0) until this issue is fixed: https://github.com/pytorch/pytorch/issues/166628
+pip install torch==2.8.0+cu128 torchvision==0.23.0+cu128 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu128

 # For AMD GPUs:
 # Not supported yet, because ROCm is not available on Windows. Use Linux if you have AMD GPU.
@@ -90,11 +93,15 @@ pip3 uninstall torch
 pip3 install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/rocm6.4
 ```

+> See [How to fix "CUDA GPU is not available. Using CPU" warning?](#cuda-warning)
+
 > See [How  to fix "WARNING: The script abogen-cli is installed in '/home/username/.local/bin' which is not on PATH" error in Linux?](#path-warning)

 > See [How to fix "No matching distribution found" error?](#no-matching-distribution-found)

-> See [How to fix "CUDA GPU is not available. Using CPU" warning?](#cuda-warning)
+> See [How to fix "[WinError 1114] A dynamic link library (DLL) initialization routine failed" error?](#WinError-1114)
+
+> See [How to use "uv" instead of "pip"?](#use-uv-instead-of-pip)

 > Special thanks to [@hg000125](https://github.com/hg000125) for his contribution in [#23](https://github.com/denizsafak/abogen/issues/23). AMD GPU support is possible thanks to his work.

@@ -108,7 +115,7 @@ abogen
 > If you installed Abogen using the Windows installer `(WINDOWS_INSTALL.bat)`, It should have created a shortcut in the same folder, or your desktop. You can run it from there. If you lost the shortcut, Abogen is located in `python_embedded/Scripts/abogen.exe`. You can run it from there directly.

 ## `How to use?`
-1) Drag and drop any ePub, PDF, text or markdown file (or use the built-in text editor)
+1) Drag and drop any ePub, PDF, text, markdown, or subtitle file (or use the built-in text editor)
 2) Configure the settings:
    - Set speech speed
    - Select a voice (or create a custom voice using voice mixer)
@@ -126,21 +133,24 @@ Here’s Abogen in action: in this demo, it processes ∼3,000 characters of tex

 | Options | Description |
 |---------|-------------|
-| **Input Box** | Drag and drop `ePub`, `PDF`, `.TXT` or `.MD` files (or use built-in text editor) |
+| **Input Box** | Drag and drop `ePub`, `PDF`, `.TXT`, `.MD`, `.SRT`, `.ASS` or `.VTT` files (or use built-in text editor) |
 | **Queue options** | Add multiple files to a queue and process them in batch, with individual settings for each file. See [Queue mode](#queue-mode) for more details. |
 | **Speed** | Adjust speech rate from `0.1x` to `2.0x` |
 | **Select Voice** | First letter of the language code (e.g., `a` for American English, `b` for British English, etc.), second letter is for `m` for male and `f` for female. |
 | **Voice mixer** | Create custom voices by mixing different voice models with a profile system. See [Voice Mixer](#voice-mixer) for more details. |
 | **Voice preview** | Listen to the selected voice before processing. |
-| **Generate subtitles** | `Disabled`, `Sentence`, `Sentence + Comma`, `Sentence + Highlighting`, `1 word`, `2 words`, `3 words`, etc. (Represents the number of words in each subtitle entry) |
+| **Generate subtitles** | `Disabled`, `Line`, `Sentence`, `Sentence + Comma`, `Sentence + Highlighting`, `1 word`, `2 words`, `3 words`, etc. (Represents the number of words in each subtitle entry) |
 | **Output voice format** | `.WAV`, `.FLAC`, `.MP3`, `.OPUS (best compression)` and `M4B (with chapters)` |
 | **Output subtitle format** | Configures the subtitle format as `SRT (standard)`, `ASS (wide)`, `ASS (narrow)`, `ASS (centered wide)`, or `ASS (centered narrow)`. |
 | **Replace single newlines with spaces** | Replaces single newlines with spaces in the text. This is useful for texts that have imaginary line breaks. |
 | **Save location** | `Save next to input file`, `Save to desktop`, or `Choose output folder` |

 > Special thanks to [@brianxiadong](https://github.com/brianxiadong) for adding markdown support in PR [#75](https://github.com/denizsafak/abogen/pull/75)
+
 > Special thanks to [@jborza](https://github.com/jborza) for chapter support in PR [#10](https://github.com/denizsafak/abogen/pull/10)

+> Special thanks to [@mleg](https://github.com/mleg) for adding `Line` option in subtitle generation in PR [#94](https://github.com/denizsafak/abogen/pull/94)
+
 | Book handler options | Description |
 |---------|-------------|
 | **Chapter Control** | Select specific `chapters` from ePUBs or markdown files or `chapters + pages` from PDFs. |
@@ -159,6 +169,8 @@ Here’s Abogen in action: in this demo, it processes ∼3,000 characters of tex
 | **Open config directory** | Opens the directory where the configuration file is stored. |
 | **Open cache directory** | Opens the cache directory where converted text files are stored. |
 | **Clear cache files** | Deletes cache files created during the conversion or preview. |
+| **Use silent gaps between subtitles** | Prevents unnecessary audio speed-up by letting speech continue into the silent gaps between subtitle etries. In short, it ignores the end times in subtitle entries and uses the silent space until the beginning of the next subtitle entry. When disabled, it speeds up the audio to fit the exact time interval specified in the subtitle. (for subtitle files). |
+| **Subtitle speed adjustment method** | Choose how to speed up audio when needed: `TTS Regeneration (better quality)` re-generates the audio at a faster speed, while `FFmpeg Time-stretch (better speed)` quickly speeds up the generated audio. (for subtitle files). |
 | **Check for updates at startup** | Automatically checks for updates when the program starts. |
 | **Disable Kokoro's internet access** | Prevents Kokoro from downloading models or voices from HuggingFace Hub, useful for offline use. |
 | **Reset to default settings** | Resets all settings to their default values. |
@@ -218,7 +230,30 @@ Similar to chapter markers, it is possible to add metadata tags for `M4B` files.
 <<METADATA_ALBUM_ARTIST:Album Artist>>
 <<METADATA_COMPOSER:Narrator>>
 <<METADATA_GENRE:Audiobook>>
+<<METADATA_COVER_PATH:path/to/cover.jpg>>
 ```
+> Note: `METADATA_COVER_PATH` is used to embed a cover image into the generated M4B file. Abogen automatically extracts the cover from EPUB and PDF files and adds this tag for you.
+
+## `About Timestamp-based Text Files`
+Similar to converting subtitle files to audio, Abogen can automatically detect text files that contain timestamps in `HH:MM:SS` or `HH:MM:SS,ms` format. When timestamps are found inside your text file, Abogen will ask if you want to use them for audio timing. This is useful for creating timed narrations, scripts, or transcripts where you need exact control over when each segment is spoken.
+
+Format your text file like this:
+```
+00:00:00
+This is the first segment of text.
+
+00:00:15
+This is the second segment, starting at 15 seconds.
+
+00:00:45
+And this is the third segment, starting at 45 seconds.
+```
+
+**Important notes:**
+- Timestamps must be in `HH:MM:SS` or `HH:MM:SS,ms` format (e.g., `00:05:30` for 5 minutes 30 seconds, or `00:05:30,500` for 5 minutes 30.5 seconds)
+- Milliseconds are optional and provide precision up to 1/1000th of a second
+- Text before the first timestamp (if any) will automatically start at `00:00:00`
+- When using timestamps, the subtitle generation mode setting is ignored

 ## `Supported Languages`
 ```
@@ -241,6 +276,7 @@ I highly recommend using [MPV](https://mpv.io/installation/) to play your audio
 # --- MPV Settings ---
 save-position-on-quit
 keep-open=yes
+audio-display=no
 # --- Subtitle ---
 sub-ass-override=no
 sub-margin-y=50
@@ -318,20 +354,38 @@ abogen-cli.exe

 This will start Abogen in command-line mode and display detailed error messages. Please open a new issue on the [Issues](https://github.com/denizsafak/abogen/issues) page with the error message and a description of your problem.

-## `Tips and Solutions`
+## `Common Issues & Solutions`
+
+<details><summary><b>
+<a name="about-abogen">About the name "abogen"</a>
+</b></summary>
+
+> The name **"abogen"** comes from a shortened form of **"audiobook generator"**, which is the purpose of this project.  
+>
+> After releasing the project, I learned from [community feedback](https://news.ycombinator.com/item?id=44853064#44857237) that the prefix *"abo"* can unfortunately be understood as an ethnic slur in certain regions (particularly Australia and New Zealand). This was something I was not aware of when naming the project, as English is not my first language.  
+>
+> I want to make it clear that the name was chosen only for its technical meaning, with **no offensive intent**. I’m grateful to those who kindly pointed this out, as it helps ensure the project remains respectful and welcoming to everyone.  
+
+</details>

 <details><summary><b>
 <a name="cuda-warning">How to fix "CUDA GPU is not available. Using CPU" warning?</a>
 </b></summary>

-> This message means PyTorch couldn't use your GPU. On Windows, Abogen supports NVIDIA GPUs with CUDA. AMD GPUs are supported only on Linux. Abogen will still run on the CPU, but it will be slower.
+> This message means PyTorch could not use your GPU and has fallen back to the CPU. On Windows, Abogen only supports NVIDIA GPUs with CUDA. AMD GPUs are not supported on Windows (they are only supported on Linux with ROCm). Abogen will still work on the CPU, but processing will be slower compared to a supported GPU.
 >
 > If you have a compatible NVIDIA GPU on Windows and still see this warning:
 > Open your terminal in the Abogen folder (the folder that contains `python_embedded`) and type:
 > ```bash
-> python_embedded\python.exe -m pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu128
+> python_embedded\python.exe -m pip install --force-reinstall torch==2.8.0+cu128 torchvision==0.23.0+cu128 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu128
 > ```
-> If you have an AMD GPU, use Linux and follow the Linux/ROCm [instructions](#how-to-install-). If you want to keep running on CPU, no action is required, but performance will just be reduced. See [#32](https://github.com/denizsafak/abogen/issues/32) for more details.
+>
+> If this does not resolve the issue and you are using an older NVIDIA GPU that does not support CUDA 12.8, you can try installing an older version of PyTorch that supports your GPU. For example, for CUDA 12.6, run:
+> ```bash
+> python_embedded\python.exe -m pip install --force-reinstall torch==2.8.0+cu126 torchvision==0.23.0+cu126 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu126
+> ```
+> 
+> If you have an AMD GPU, you need to use Linux and follow the Linux/ROCm [instructions](#linux). If you want to keep running on CPU, no action is required, but performance will just be reduced. See [#32](https://github.com/denizsafak/abogen/issues/32) for more details.

 </details>

@@ -354,6 +408,22 @@ This will start Abogen in command-line mode and display detailed error messages.

 </details>

+<details><summary><b>
+<a name="WinError-1114">How to fix "[WinError 1114] A dynamic link library (DLL) initialization routine failed" error?</a>
+</b></summary>
+
+> I faced this error when trying to run Abogen in a virtual Windows machine without GPU support. Here's how I fixed it:
+> If you installed Abogen using the Windows installer `(WINDOWS_INSTALL.bat)`, go to Abogen's folder (that contains `python_embedded`), open your terminal there and run:
+> ```bash
+> python_embedded\python.exe -m pip install --force-reinstall torch==2.8.0+cu128 torchvision==0.23.0+cu128 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu128
+> ```
+> If you installed Abogen using pip, open your terminal in the virtual environment and run:
+> ```bash
+> pip install torch==2.8.0 torchaudio==2.8.0 torchvision==0.23.0
+> ```
+
+</details>
+
 <details><summary><b>
 <a name="japanese-audio-not-working">How to fix Japanese audio not working?</a>
 </b></summary>
@@ -363,6 +433,34 @@ This will start Abogen in command-line mode and display detailed error messages.

 </details>

+<details><summary><b>
+<a name="use-uv-instead-of-pip">How to use "uv" instead of "pip"?</a>
+</b></summary>
+
+> Abogen needs "pip", because Kokoro uses pip to download voice models from HuggingFace Hub. If you want to use "uv" instead of "pip", you can use the following command to run Abogen:
+>
+> ```bash
+> uvx --with pip abogen
+> ```
+
+</details>
+
+<details><summary><b>
+<a name="use-uv-instead-of-pip">How to uninstall Abogen?</a>
+</b></summary>
+
+> - From the settings menu, go to `Open configuration directory` and delete the directory.
+> - From the settings menu, go to `Open cache directory` and delete the directory.
+> - If you installed Abogen using pip, type:
+>```bash
+>pip uninstall abogen # uninstalls abogen
+>pip cache purge # removes pip cache
+>```
+> - If you installed Abogen using the Windows installer (WINDOWS_INSTALL.bat), just remove the folder that contains Abogen. It installs everything inside `python_embedded` folder, no other directories are created.
+> - If you installed espeak-ng, you need to remove it separately.
+
+</details>
+
 ## `Contributing`
 I welcome contributions! If you have ideas for new features, improvements, or bug fixes, please fork the repository and submit a pull request.
 ### For developers and contributors
@@ -387,7 +485,10 @@ Feel free to explore the code and make any changes you like.
 This project is available under the MIT License - see the [LICENSE](https://github.com/denizsafak/abogen/blob/main/LICENSE) file for details.
 [Kokoro](https://github.com/hexgrad/kokoro) is licensed under [Apache-2.0](https://github.com/hexgrad/kokoro/blob/main/LICENSE) which allows commercial use, modification, distribution, and private use.

+## `Star History`
+[![Star History Chart](https://api.star-history.com/svg?repos=denizsafak/abogen&type=Date)](https://www.star-history.com/#denizsafak/abogen&Date)
+
 > [!IMPORTANT]
 > Subtitle generation currently works only for English. This is because Kokoro provides timestamp tokens only for English text. If you want subtitles in other languages, please request this feature in the [Kokoro project](https://github.com/hexgrad/kokoro). For more technical details, see [this line](https://github.com/hexgrad/kokoro/blob/6d87f4ae7abc2d14dbc4b3ef2e5f19852e861ac2/kokoro/pipeline.py#L383) in the Kokoro's code.

-> Tags: audiobook, kokoro, text-to-speech, TTS, audiobook generator, audiobooks, text to speech, audiobook maker, audiobook creator, audiobook generator, voice-synthesis, text to audio, text to audio converter, text to speech converter, text to speech generator, text to speech software, text to speech app, epub to audio, pdf to audio, markdown to audio, content-creation, media-generation
+> Tags: audiobook, kokoro, text-to-speech, TTS, audiobook generator, audiobooks, text to speech, audiobook maker, audiobook creator, audiobook generator, voice-synthesis, text to audio, text to audio converter, text to speech converter, text to speech generator, text to speech software, text to speech app, epub to audio, pdf to audio, markdown to audio, subtitle to audio, srt to audio, ass to audio, vtt to audio, webvtt to audio, content-creation, media-generation
@@ -8,9 +8,6 @@ cd /d "%~dp0"
 :: Japanese: "ja"
 set MISAKI_LANG=en

-:: Set PyTorch CUDA version
-set CUDA_VERSION=128
-
 :::
 :::      _    ____   ___   ____  _____ _   _ 
 :::     / \  | __ ) / _ \ / ___|| ____| \ | |
@@ -139,10 +136,10 @@ if exist "%VERSION_FILE%" (
 REM Python embedded download configuration for different architectures
 if "%PROCESSOR_ARCHITECTURE%"=="x86" (
    set PYTHON_EMBEDDED_FILE=%PROJECTFOLDER%\python_embedded_win32.zip
-    set PYTHON_EMBEDDED_URL=https://github.com/wojiushixiaobai/Python-Embed-Win64/releases/download/3.12.8/python-3.12.8-embed-win32.zip
+    set PYTHON_EMBEDDED_URL=https://github.com/wojiushixiaobai/Python-Embed-Win64/releases/download/3.12.12/python-3.12.12-embed-win32.zip
 ) else (
    set PYTHON_EMBEDDED_FILE=%PROJECTFOLDER%\python_embedded_amd64.zip
-    set PYTHON_EMBEDDED_URL=https://github.com/wojiushixiaobai/Python-Embed-Win64/releases/download/3.12.8/python-3.12.8-embed-amd64.zip
+    set PYTHON_EMBEDDED_URL=https://github.com/wojiushixiaobai/Python-Embed-Win64/releases/download/3.12.12/python-3.12.12-embed-amd64.zip
 )

 :: Check if Python exists
@@ -281,8 +278,10 @@ if /I "%IS_NVIDIA%"=="true" (
    for /f %%i in ('%PYTHON_CONSOLE_PATH% -c "from torch.cuda import is_available; print(is_available())"') do set cuda_available=%%i

    if "%cuda_available%"=="False" (
-        echo Installing PyTorch with CUDA %CUDA_VERSION% support...
-        %PYTHON_CONSOLE_PATH% -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu%CUDA_VERSION% --no-warn-script-location
+        echo Installing PyTorch with CUDA (12.8) support...
+        :: We need to use an older version of PyTorch (2.8.0) until this issue is fixed: https://github.com/pytorch/pytorch/issues/166628
+        :: Solution mentioned by @mazenemam19 in #99:
+        %PYTHON_CONSOLE_PATH% -m pip install torch==2.8.0+cu128 torchvision==0.23.0+cu128 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu128 --no-warn-script-location
        echo.
        if errorlevel 1 (
            echo Failed to install PyTorch.
@@ -305,8 +304,10 @@ if /I "%IS_NVIDIA%"=="true" (
    if errorlevel 2 (
        echo Skipping PyTorch installation.
    ) else (
-        echo Installing PyTorch with CUDA %CUDA_VERSION% support...
-        %PYTHON_CONSOLE_PATH% -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu%CUDA_VERSION% --no-warn-script-location
+        echo Installing PyTorch with CUDA (12.8) support...
+        :: We need to use an older version of PyTorch (2.8.0) until this issue is fixed: https://github.com/pytorch/pytorch/issues/166628
+        :: Solution mentioned by @mazenemam19 in #99:
+        %PYTHON_CONSOLE_PATH% -m pip install torch==2.8.0+cu128 torchvision==0.23.0+cu128 torchaudio==2.8.0 --index-url https://download.pytorch.org/whl/cu128 --no-warn-script-location
        if errorlevel 1 (
            echo Failed to install PyTorch.
            pause
@@ -12,8 +12,10 @@ RUN apt-get update \
        python3 \
        python3-venv \
        python3-pip \
-        python3-pyqt5 \
+        python3-pyqt6 \
        espeak-ng \
+        libxcb-cursor0 \
+        libgl1 \
 && apt-get clean \
 && rm -rf /var/lib/apt/lists/*

@@ -1 +1 @@
-1.1.8
+1.2.3
@@ -2,9 +2,7 @@ from abogen.utils import get_version

 # Program Information
 PROGRAM_NAME = "abogen"
-PROGRAM_DESCRIPTION = (
-    "Generate audiobooks from EPUBs, PDFs and text with synchronized captions."
-)
+PROGRAM_DESCRIPTION = "Generate audiobooks from EPUBs, PDFs, text and subtitles with synchronized captions."
 GITHUB_URL = "https://github.com/denizsafak/abogen"
 VERSION = get_version()

@@ -44,6 +42,7 @@ SUPPORTED_SOUND_FORMATS = [
 SUPPORTED_SUBTITLE_FORMATS = [
    "srt",
    "ass",
+    "vtt",
 ]

 # Supported input formats
@@ -51,6 +50,9 @@ SUPPORTED_INPUT_FORMATS = [
    "epub",
    "pdf",
    "txt",
+    "srt",
+    "ass",
+    "vtt",
 ]

 # Supported languages for subtitle generation
@@ -148,6 +150,7 @@ COLORS = {
    "BLUE_BORDER_HOVER": "#6ab0de",
    "YELLOW_BACKGROUND": "rgba(255, 221, 51, 0.40)",
    "GREY_BACKGROUND": "rgba(128, 128, 128, 0.15)",
+    "GREY_BORDER": "#808080",
    "RED_BACKGROUND": "rgba(232, 78, 60, 0.15)",
    "RED_BG": "rgba(232, 78, 60, 0.10)",
    "RED_BG_HOVER": "rgba(232, 78, 60, 0.15)",
@@ -1,26 +1,65 @@
-from json import load
 import os
 import sys
 import platform
 import atexit
 import signal

+# Fix PyTorch DLL loading issue ([WinError 1114]) on Windows before importing PyQt6
+if platform.system() == "Windows":
+    import ctypes
+    from importlib.util import find_spec
+
+    try:
+        if (
+            (spec := find_spec("torch"))
+            and spec.origin
+            and os.path.exists(
+                dll_path := os.path.join(os.path.dirname(spec.origin), "lib", "c10.dll")
+            )
+        ):
+            ctypes.CDLL(os.path.normpath(dll_path))
+    except Exception:
+        pass
+
 # Qt platform plugin detection (fixes #59)
 try:
-    from PyQt5.QtCore import QLibraryInfo
-    plugins = QLibraryInfo.location(QLibraryInfo.PluginsPath)
-    platform_dir = os.path.join(plugins, "platforms")
+    from PyQt6.QtCore import QLibraryInfo
+
+    # Get the path to the plugins directory
+    plugins = QLibraryInfo.path(QLibraryInfo.LibraryPath.PluginsPath)
+
+    # Normalize path to use the OS-native separators and absolute path
+    platform_dir = os.path.normpath(os.path.join(plugins, "platforms"))
+
+    # Ensure we work with an absolute path for clarity
+    platform_dir = os.path.abspath(platform_dir)
+
    if os.path.isdir(platform_dir):
        os.environ["QT_QPA_PLATFORM_PLUGIN_PATH"] = platform_dir
        print("QT_QPA_PLATFORM_PLUGIN_PATH set to:", platform_dir)
    else:
-        print("PyQt5 platform plugins not found at", platform_dir)
+        print("PyQt6 platform plugins not found at", platform_dir)
 except ImportError:
-    print("PyQt5 not installed.")
+    print("PyQt6 not installed.")

-from PyQt5.QtWidgets import QApplication
-from PyQt5.QtGui import QIcon
-from PyQt5.QtCore import qInstallMessageHandler, QtMsgType
+# Set application ID for Windows taskbar icon
+if platform.system() == "Windows":
+    try:
+        from abogen.constants import PROGRAM_NAME, VERSION
+        import ctypes
+
+        app_id = f"{PROGRAM_NAME}.{VERSION}"
+        ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(app_id)
+    except Exception as e:
+        print("Warning: failed to set AppUserModelID:", e)
+
+from PyQt6.QtWidgets import QApplication
+from PyQt6.QtGui import QIcon
+from PyQt6.QtCore import (
+    QLibraryInfo,
+    qInstallMessageHandler,
+    QtMsgType,
+)

 # Add the directory to Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__)))
@@ -69,10 +108,12 @@ if platform.system() == "Darwin" and platform.processor() == "arm":

 # Custom message handler to filter out specific Qt warnings
 def qt_message_handler(mode, context, message):
+    # In PyQt6, the mode is an enum, so we compare with the enum members
    if "Wayland does not support QWindow::requestActivate()" in message:
        return  # Suppress this specific message
    if "setGrabPopup called with a parent, QtWaylandClient" in message:
        return
+
    if mode == QtMsgType.QtWarningMsg:
        print(f"Qt Warning: {message}")
    elif mode == QtMsgType.QtCriticalMsg:
@@ -86,13 +127,6 @@ def qt_message_handler(mode, context, message):
 # Install the custom message handler
 qInstallMessageHandler(qt_message_handler)

-# Set application ID for Windows taskbar icon
-if platform.system() == "Windows":
-    import ctypes
-
-    app_id = f"{PROGRAM_NAME}.{VERSION}"
-    ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(app_id)
-
 # Handle Wayland on Linux GNOME
 if platform.system() == "Linux":
    xdg_session = os.environ.get("XDG_SESSION_TYPE", "").lower()
@@ -117,13 +151,13 @@ def main():
    # Set the .desktop name on Linux
    if platform.system() == "Linux":
        try:
-            app.setDesktopFileName("abogen.desktop")
+            app.setDesktopFileName("abogen")
        except AttributeError:
            pass

    ex = abogen()
    ex.show()
-    sys.exit(app.exec_())
+    sys.exit(app.exec())


 if __name__ == "__main__":
@@ -2,7 +2,7 @@
 # button to remove an item from the queue
 # button to clear the queue

-from PyQt5.QtWidgets import (
+from PyQt6.QtWidgets import (
    QDialog,
    QVBoxLayout,
    QHBoxLayout,
@@ -14,18 +14,20 @@ from PyQt5.QtWidgets import (
    QLabel,
    QWidget,
    QSizePolicy,
+    QAbstractItemView,
 )
-from PyQt5.QtCore import QFileInfo, Qt
+from PyQt6.QtCore import QFileInfo, Qt
 from abogen.constants import COLORS
 from copy import deepcopy
-from PyQt5.QtGui import QFontMetrics
+from PyQt6.QtGui import QFontMetrics


 class ElidedLabel(QLabel):
-    def __init__(self, text, parent=None):
-        super().__init__(text, parent)
+    def __init__(self, text):
+        super().__init__(text)
        self._full_text = text
-        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
+        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Preferred)
+        self.setTextFormat(Qt.TextFormat.PlainText)

    def setText(self, text):
        self._full_text = text
@@ -34,7 +36,9 @@ class ElidedLabel(QLabel):

    def resizeEvent(self, event):
        metrics = QFontMetrics(self.font())
-        elided = metrics.elidedText(self._full_text, Qt.ElideRight, self.width())
+        elided = metrics.elidedText(
+            self._full_text, Qt.TextElideMode.ElideRight, self.width()
+        )
        super().setText(elided)
        super().resizeEvent(event)

@@ -53,8 +57,12 @@ class QueueListItemWidget(QWidget):
        name_label = ElidedLabel(os.path.basename(file_name))
        char_label = QLabel(f"Chars: {char_count}")
        char_label.setStyleSheet(f"color: {COLORS['LIGHT_DISABLED']};")
-        char_label.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
-        char_label.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Preferred)
+        char_label.setAlignment(
+            Qt.AlignmentFlag.AlignRight | Qt.AlignmentFlag.AlignVCenter
+        )
+        char_label.setSizePolicy(
+            QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Preferred
+        )
        layout.addWidget(name_label, 1)
        layout.addWidget(char_label, 0)
        self.setLayout(layout)
@@ -67,17 +75,23 @@ class DroppableQueueListWidget(QListWidget):
        self.setAcceptDrops(True)
        # Overlay for drag hover
        self.drag_overlay = QLabel("", self)
-        self.drag_overlay.setAlignment(Qt.AlignCenter)
+        self.drag_overlay.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.drag_overlay.setStyleSheet(
            f"border:2px dashed {COLORS['BLUE_BORDER_HOVER']}; border-radius:5px; padding:20px; background:{COLORS['BLUE_BG_HOVER']};"
        )
        self.drag_overlay.setVisible(False)
-        self.drag_overlay.setAttribute(Qt.WA_TransparentForMouseEvents, True)
+        self.drag_overlay.setAttribute(
+            Qt.WidgetAttribute.WA_TransparentForMouseEvents, True
+        )

    def dragEnterEvent(self, event):
        if event.mimeData().hasUrls():
            for url in event.mimeData().urls():
-                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt"):
+                file_path = url.toLocalFile().lower()
+                if url.isLocalFile() and (
+                    file_path.endswith(".txt")
+                    or file_path.endswith((".srt", ".ass", ".vtt"))
+                ):
                    self.drag_overlay.resize(self.size())
                    self.drag_overlay.setVisible(True)
                    event.acceptProposedAction()
@@ -88,7 +102,11 @@ class DroppableQueueListWidget(QListWidget):
    def dragMoveEvent(self, event):
        if event.mimeData().hasUrls():
            for url in event.mimeData().urls():
-                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt"):
+                file_path = url.toLocalFile().lower()
+                if url.isLocalFile() and (
+                    file_path.endswith(".txt")
+                    or file_path.endswith((".srt", ".ass", ".vtt"))
+                ):
                    event.acceptProposedAction()
                    return
        event.ignore()
@@ -103,7 +121,11 @@ class DroppableQueueListWidget(QListWidget):
            file_paths = [
                url.toLocalFile()
                for url in event.mimeData().urls()
-                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt")
+                if url.isLocalFile()
+                and (
+                    url.toLocalFile().lower().endswith(".txt")
+                    or url.toLocalFile().lower().endswith((".srt", ".ass", ".vtt"))
+                )
            ]
            if file_paths:
                self.parent_dialog.add_files_from_paths(file_paths)
@@ -132,34 +154,38 @@ class QueueManager(QDialog):
        layout.setSpacing(12)  # set spacing between widgets in main layout
        # list of queued items
        self.listwidget = DroppableQueueListWidget(self)
-        self.listwidget.setSelectionMode(QListWidget.ExtendedSelection)
+        self.listwidget.setSelectionMode(
+            QAbstractItemView.SelectionMode.ExtendedSelection
+        )
        self.listwidget.setAlternatingRowColors(True)
-        self.listwidget.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.listwidget.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.listwidget.customContextMenuRequested.connect(self.show_context_menu)
        # Add informative instructions at the top
        instructions = QLabel(
            "<h2>How Queue Works?</h2>"
-            "You can add text files (.txt) directly using the '<b>Add files</b>' button below. "
-            "To add PDF or EPUB files, use the input box in the main window and click the <b>'Add to Queue'</b> button. "
+            "You can add text and subtitle files (.txt, .srt, .ass, .vtt) directly using the '<b>Add files</b>' button below. "
+            "To add PDF, EPUB or markdown files, use the input box in the main window and click the <b>'Add to Queue'</b> button. "
            "Each file in the queue keeps the configuration settings active when it was added. "
            "Changing the main window configuration afterward <b>does not</b> affect files already in the queue. "
            "You can view each file's configuration by hovering over them."
        )
-        instructions.setAlignment(Qt.AlignLeft)
+        instructions.setAlignment(Qt.AlignmentFlag.AlignLeft)
        instructions.setWordWrap(True)
        instructions.setStyleSheet("margin-bottom: 8px;")
        layout.addWidget(instructions)
        # Overlay label for empty queue
        self.empty_overlay = QLabel(
-            "Drag and drop your text files here or use the 'Add files' button.",
+            "Drag and drop your text or subtitle files here or use the 'Add files' button.",
            self.listwidget,
        )
-        self.empty_overlay.setAlignment(Qt.AlignCenter)
+        self.empty_overlay.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.empty_overlay.setStyleSheet(
            f"color: {COLORS['LIGHT_DISABLED']}; background: transparent; padding: 20px;"
        )
        self.empty_overlay.setWordWrap(True)
-        self.empty_overlay.setAttribute(Qt.WA_TransparentForMouseEvents, True)
+        self.empty_overlay.setAttribute(
+            Qt.WidgetAttribute.WA_TransparentForMouseEvents, True
+        )
        self.empty_overlay.hide()
        # add queue items to the list
        self.process_queue()
@@ -192,7 +218,10 @@ class QueueManager(QDialog):
        self.listwidget.currentItemChanged.connect(self.update_button_states)
        self.listwidget.itemSelectionChanged.connect(self.update_button_states)

-        buttons = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel, self)
+        buttons = QDialogButtonBox(
+            QDialogButtonBox.StandardButton.Ok | QDialogButtonBox.StandardButton.Cancel,
+            self,
+        )
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)

@@ -207,9 +236,10 @@ class QueueManager(QDialog):

    def process_queue(self):
        """Process the queue items."""
+        import os
+
        self.listwidget.clear()
        if not self.queue:
-            self.empty_overlay.resize(self.listwidget.size())
            self.empty_overlay.show()
            self.update_button_states()
            return
@@ -221,9 +251,20 @@ class QueueManager(QDialog):
            display_file_path = getattr(item, "save_base_path", None) or item.file_name
            processing_file_path = item.file_name

+            # Normalize paths for consistent display (fixes Windows path separator issues)
+            display_file_path = (
+                os.path.normpath(display_file_path)
+                if display_file_path
+                else display_file_path
+            )
+            processing_file_path = (
+                os.path.normpath(processing_file_path)
+                if processing_file_path
+                else processing_file_path
+            )
+
            # Only show the file name, not the full path
            display_name = display_file_path
-            import os

            if os.path.sep in display_file_path:
                display_name = os.path.basename(display_file_path)
@@ -235,13 +276,19 @@ class QueueManager(QDialog):
            # For plain .txt inputs we don't need to show a separate processing file
            show_processing = True
            try:
-                if isinstance(display_file_path, str) and display_file_path.lower().endswith('.txt'):
+                if isinstance(
+                    display_file_path, str
+                ) and display_file_path.lower().endswith(".txt"):
                    show_processing = False
            except Exception:
                show_processing = True

            tooltip = f"<b>Input File:</b> {display_file_path}<br>"
-            if show_processing and processing_file_path and processing_file_path != display_file_path:
+            if (
+                show_processing
+                and processing_file_path
+                and processing_file_path != display_file_path
+            ):
                tooltip += f"<b>Processing File:</b> {processing_file_path}<br>"
            tooltip += (
                f"<b>Language:</b> {getattr(item, 'lang_code', '')}<br>"
@@ -255,15 +302,28 @@ class QueueManager(QDialog):
                f"<b>Subtitle Mode:</b> {getattr(item, 'subtitle_mode', '')}<br>"
                f"<b>Output Format:</b> {getattr(item, 'output_format', '')}<br>"
                f"<b>Characters:</b> {getattr(item, 'total_char_count', '')}<br>"
-                f"<b>Replace Single Newlines:</b> {getattr(item, 'replace_single_newlines', False)}"
+                f"<b>Replace Single Newlines:</b> {getattr(item, 'replace_single_newlines', False)}<br>"
+                f"<b>Use Silent Gaps:</b> {getattr(item, 'use_silent_gaps', False)}<br>"
+                f"<b>Speed Method:</b> {getattr(item, 'subtitle_speed_method', 'tts')}"
            )
+            # Add book handler options if present
+            save_chapters_separately = getattr(item, "save_chapters_separately", None)
+            merge_chapters_at_end = getattr(item, "merge_chapters_at_end", None)
+            if save_chapters_separately is not None:
+                tooltip += f"<br><b>Save chapters separately:</b> {'Yes' if save_chapters_separately else 'No'}"
+                # Only show merge option if saving chapters separately
+                if save_chapters_separately and merge_chapters_at_end is not None:
+                    tooltip += f"<br><b>Merge chapters at the end:</b> {'Yes' if merge_chapters_at_end else 'No'}"
            list_item.setToolTip(tooltip)
            list_item.setIcon(icon)
            # Store both paths for context menu
-            list_item.setData(Qt.UserRole, {
-                'display_path': display_file_path,
-                'processing_path': processing_file_path
-            })
+            list_item.setData(
+                Qt.ItemDataRole.UserRole,
+                {
+                    "display_path": display_file_path,
+                    "processing_path": processing_file_path,
+                },
+            )
            # Use custom widget for display
            char_count = getattr(item, "total_char_count", 0)
            widget = QueueListItemWidget(display_file_path, char_count)
@@ -275,7 +335,7 @@ class QueueManager(QDialog):
        items = self.listwidget.selectedItems()
        if not items:
            return
-        from PyQt5.QtWidgets import QMessageBox
+        from PyQt6.QtWidgets import QMessageBox

        # Remove by index to ensure correct mapping
        rows = sorted([self.listwidget.row(item) for item in items], reverse=True)
@@ -285,10 +345,10 @@ class QueueManager(QDialog):
                self,
                "Confirm Remove",
                f"Are you sure you want to remove {len(rows)} selected items from the queue?",
-                QMessageBox.Yes | QMessageBox.No,
-                QMessageBox.No,
+                QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                QMessageBox.StandardButton.No,
            )
-            if reply != QMessageBox.Yes:
+            if reply != QMessageBox.StandardButton.Yes:
                return
        for row in rows:
            if 0 <= row < len(self.queue):
@@ -297,17 +357,17 @@ class QueueManager(QDialog):
        self.update_button_states()

    def clear_queue(self):
-        from PyQt5.QtWidgets import QMessageBox
+        from PyQt6.QtWidgets import QMessageBox

        if len(self.queue) > 1:
            reply = QMessageBox.question(
                self,
                "Confirm Clear Queue",
                f"Are you sure you want to clear {len(self.queue)} items from the queue?",
-                QMessageBox.Yes | QMessageBox.No,
-                QMessageBox.No,
+                QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                QMessageBox.StandardButton.No,
            )
-            if reply != QMessageBox.Yes:
+            if reply != QMessageBox.StandardButton.Yes:
                return
        self.queue.clear()
        self.listwidget.clear()
@@ -357,6 +417,19 @@ class QueueManager(QDialog):
            attrs["replace_single_newlines"] = getattr(
                parent, "replace_single_newlines", False
            )
+            # use_silent_gaps
+            attrs["use_silent_gaps"] = getattr(parent, "use_silent_gaps", False)
+            # subtitle_speed_method
+            attrs["subtitle_speed_method"] = getattr(
+                parent, "subtitle_speed_method", "tts"
+            )
+            # book handler options
+            attrs["save_chapters_separately"] = getattr(
+                parent, "save_chapters_separately", None
+            )
+            attrs["merge_chapters_at_end"] = getattr(
+                parent, "merge_chapters_at_end", None
+            )
        else:
            # fallback: empty values
            attrs = {
@@ -373,11 +446,13 @@ class QueueManager(QDialog):
                    "replace_single_newlines",
                ]
            }
+            attrs["save_chapters_separately"] = None
+            attrs["merge_chapters_at_end"] = None
        return attrs

    def add_files_from_paths(self, file_paths):
        from abogen.utils import calculate_text_length
-        from PyQt5.QtWidgets import QMessageBox
+        from PyQt6.QtWidgets import QMessageBox
        import os

        current_attrs = self.get_current_attributes()
@@ -389,9 +464,14 @@ class QueueManager(QDialog):

            item = QueueItem()
            item.file_name = file_path
-            item.save_base_path = file_path  # For .txt files, processing and save paths are the same
+            item.save_base_path = (
+                file_path  # For .txt files, processing and save paths are the same
+            )
            for attr, value in current_attrs.items():
                setattr(item, attr, value)
+            # Override subtitle_mode to "Disabled" for subtitle files
+            if file_path.lower().endswith((".srt", ".ass", ".vtt")):
+                item.subtitle_mode = "Disabled"
            # Read file content and calculate total_char_count using calculate_text_length
            try:
                with open(file_path, "r", encoding="utf-8", errors="ignore") as f:
@@ -423,8 +503,16 @@ class QueueManager(QDialog):
                    == getattr(item, "total_char_count", None)
                    and getattr(queued_item, "replace_single_newlines", False)
                    == getattr(item, "replace_single_newlines", False)
+                    and getattr(queued_item, "use_silent_gaps", False)
+                    == getattr(item, "use_silent_gaps", False)
+                    and getattr(queued_item, "subtitle_speed_method", "tts")
+                    == getattr(item, "subtitle_speed_method", "tts")
                    and getattr(queued_item, "save_base_path", None)
                    == getattr(item, "save_base_path", None)
+                    and getattr(queued_item, "save_chapters_separately", None)
+                    == getattr(item, "save_chapters_separately", None)
+                    and getattr(queued_item, "merge_chapters_at_end", None)
+                    == getattr(item, "merge_chapters_at_end", None)
                ):
                    is_duplicate = True
                    break
@@ -442,12 +530,15 @@ class QueueManager(QDialog):
        self.update_button_states()

    def add_more_files(self):
-        from PyQt5.QtWidgets import QFileDialog
+        from PyQt6.QtWidgets import QFileDialog
        from abogen.utils import calculate_text_length  # import the function

-        # Only allow .txt files
+        # Allow .txt, .srt, .ass, and .vtt files
        files, _ = QFileDialog.getOpenFileNames(
-            self, "Select .txt files", "", "Text Files (*.txt)"
+            self,
+            "Select text or subtitle files",
+            "",
+            "Supported Files (*.txt *.srt *.ass *.vtt)",
        )
        if not files:
            return
@@ -472,9 +563,9 @@ class QueueManager(QDialog):
            self.clear_button.setEnabled(bool(self.queue))

    def show_context_menu(self, pos):
-        from PyQt5.QtWidgets import QMenu, QAction
-        from PyQt5.QtGui import QDesktopServices
-        from PyQt5.QtCore import QUrl
+        from PyQt6.QtWidgets import QMenu
+        from PyQt6.QtGui import QAction, QDesktopServices
+        from PyQt6.QtCore import QUrl
        import os

        global_pos = self.listwidget.viewport().mapToGlobal(pos)
@@ -486,75 +577,129 @@ class QueueManager(QDialog):
            remove_action.triggered.connect(self.remove_item)
            menu.addAction(remove_action)

-            # Add Open file action
-            open_file_action = QAction("Open file", self)
-
-            def open_file():
-                from PyQt5.QtWidgets import QMessageBox
-
-                item = selected_items[0]
-                paths = item.data(Qt.UserRole)
-                if isinstance(paths, dict):
-                    file_path = paths.get('display_path', paths.get('processing_path', ''))
-                else:
-                    file_path = paths  # Fallback for old format
-                
-                # Find the queue item
-                for q in self.queue:
-                    if (getattr(q, "save_base_path", None) == file_path or 
-                        q.file_name == file_path):
-                        target_path = getattr(q, "save_base_path", None) or q.file_name
-                        if not os.path.exists(target_path):
-                            QMessageBox.warning(
-                                self, "File Not Found", f"The file does not exist."
-                            )
-                            return
-                        QDesktopServices.openUrl(QUrl.fromLocalFile(target_path))
-                        break
-
-            open_file_action.triggered.connect(open_file)
-            menu.addAction(open_file_action)
-
-            # Add Go to folder action
-            # If the queued item represents a converted document (markdown, pdf, epub)
-            # show two actions: Go to processed file (the cached .txt) and Go to input file (original source)
+            # Get paths for determining if it's a document input
            item = selected_items[0]
-            paths = item.data(Qt.UserRole)
+            paths = item.data(Qt.ItemDataRole.UserRole)
            if isinstance(paths, dict):
-                display_path = paths.get('display_path', '')
-                processing_path = paths.get('processing_path', '')
+                display_path = paths.get("display_path", "")
+                processing_path = paths.get("processing_path", "")
            else:
                display_path = paths
                processing_path = paths

-            doc_exts = ('.md', '.markdown', '.pdf', '.epub')
+            doc_exts = (".md", ".markdown", ".pdf", ".epub")
            is_document_input = (
-                isinstance(display_path, str) and display_path.lower().endswith(doc_exts)
+                isinstance(display_path, str)
+                and display_path.lower().endswith(doc_exts)
            ) or (
-                isinstance(processing_path, str) and processing_path.lower().endswith(doc_exts)
+                isinstance(processing_path, str)
+                and processing_path.lower().endswith(doc_exts)
            )

-            from PyQt5.QtWidgets import QMessageBox
+            # Add Open file action(s)
+            def open_file_by_path(path_label: str):
+                from PyQt6.QtWidgets import QMessageBox
+
+                p = display_path if path_label == "display" else processing_path
+                if not p:
+                    QMessageBox.warning(
+                        self, "File Not Found", "Path is not available."
+                    )
+                    return
+
+                # Find the queue item and resolve the target path
+                target_path = None
+                for q in self.queue:
+                    if (
+                        getattr(q, "save_base_path", None) == display_path
+                        or q.file_name == display_path
+                    ):
+                        if path_label == "display":
+                            target_path = (
+                                getattr(q, "save_base_path", None) or q.file_name
+                            )
+                        else:
+                            target_path = q.file_name
+                        break
+                    if (
+                        getattr(q, "save_base_path", None) == processing_path
+                        or q.file_name == processing_path
+                    ):
+                        if path_label == "display":
+                            target_path = (
+                                getattr(q, "save_base_path", None) or q.file_name
+                            )
+                        else:
+                            target_path = q.file_name
+                        break
+
+                # Fallback to the raw path if resolution failed
+                if not target_path:
+                    target_path = p
+
+                if not os.path.exists(target_path):
+                    QMessageBox.warning(
+                        self, "File Not Found", f"The file does not exist."
+                    )
+                    return
+                QDesktopServices.openUrl(QUrl.fromLocalFile(target_path))
+
+            if is_document_input:
+                # For documents, show two open options
+                open_processed_action = QAction("Open processed file", self)
+                open_processed_action.triggered.connect(
+                    lambda: open_file_by_path("processing")
+                )
+                menu.addAction(open_processed_action)
+
+                open_input_action = QAction("Open input file", self)
+                open_input_action.triggered.connect(
+                    lambda: open_file_by_path("display")
+                )
+                menu.addAction(open_input_action)
+            else:
+                # For plain text files, show single open option
+                open_file_action = QAction("Open file", self)
+                open_file_action.triggered.connect(lambda: open_file_by_path("display"))
+                menu.addAction(open_file_action)
+
+            # Add Go to folder action
+            # If the queued item represents a converted document (markdown, pdf, epub)
+            # show two actions: Go to processed file (the cached .txt) and Go to input file (original source)
+
+            from PyQt6.QtWidgets import QMessageBox

            def open_folder_for(path_label: str):
                # path_label should be either 'display' or 'processing'
-                p = display_path if path_label == 'display' else processing_path
+                p = display_path if path_label == "display" else processing_path
                if not p:
-                    QMessageBox.warning(self, "File Not Found", "Path is not available.")
+                    QMessageBox.warning(
+                        self, "File Not Found", "Path is not available."
+                    )
                    return
                # If the stored path is the display path (original) but the actual file may be
                # stored on the queue object differently, try to resolve via the queue entry.
                target_path = None
                for q in self.queue:
-                    if getattr(q, 'save_base_path', None) == display_path or q.file_name == display_path:
-                        if path_label == 'display':
-                            target_path = getattr(q, 'save_base_path', None) or q.file_name
+                    if (
+                        getattr(q, "save_base_path", None) == display_path
+                        or q.file_name == display_path
+                    ):
+                        if path_label == "display":
+                            target_path = (
+                                getattr(q, "save_base_path", None) or q.file_name
+                            )
                        else:
                            target_path = q.file_name
                        break
-                    if getattr(q, 'save_base_path', None) == processing_path or q.file_name == processing_path:
-                        if path_label == 'display':
-                            target_path = getattr(q, 'save_base_path', None) or q.file_name
+                    if (
+                        getattr(q, "save_base_path", None) == processing_path
+                        or q.file_name == processing_path
+                    ):
+                        if path_label == "display":
+                            target_path = (
+                                getattr(q, "save_base_path", None) or q.file_name
+                            )
                        else:
                            target_path = q.file_name
                        break
@@ -563,7 +708,11 @@ class QueueManager(QDialog):
                    target_path = p

                if not os.path.exists(target_path):
-                    QMessageBox.warning(self, "File Not Found", f"The file does not exist: {target_path}")
+                    QMessageBox.warning(
+                        self,
+                        "File Not Found",
+                        f"The file does not exist: {target_path}",
+                    )
                    return
                folder = os.path.dirname(target_path)
                if os.path.exists(folder):
@@ -571,11 +720,13 @@ class QueueManager(QDialog):

            if is_document_input:
                processed_action = QAction("Go to processed file", self)
-                processed_action.triggered.connect(lambda: open_folder_for('processing'))
+                processed_action.triggered.connect(
+                    lambda: open_folder_for("processing")
+                )
                menu.addAction(processed_action)

                input_action = QAction("Go to input file", self)
-                input_action.triggered.connect(lambda: open_folder_for('display'))
+                input_action.triggered.connect(lambda: open_folder_for("display"))
                menu.addAction(input_action)
            else:
                # Default behavior for non-document inputs: single "Go to folder" action
@@ -583,15 +734,22 @@ class QueueManager(QDialog):

                def go_to_folder():
                    item = selected_items[0]
-                    paths = item.data(Qt.UserRole)
+                    paths = item.data(Qt.ItemDataRole.UserRole)
                    if isinstance(paths, dict):
-                        file_path = paths.get('display_path', paths.get('processing_path', ''))
+                        file_path = paths.get(
+                            "display_path", paths.get("processing_path", "")
+                        )
                    else:
                        file_path = paths  # Fallback for old format
                    # Find the queue item
                    for q in self.queue:
-                        if (getattr(q, "save_base_path", None) == file_path or q.file_name == file_path):
-                            target_path = getattr(q, "save_base_path", None) or q.file_name
+                        if (
+                            getattr(q, "save_base_path", None) == file_path
+                            or q.file_name == file_path
+                        ):
+                            target_path = (
+                                getattr(q, "save_base_path", None) or q.file_name
+                            )
                            if not os.path.exists(target_path):
                                QMessageBox.warning(
                                    self, "File Not Found", f"The file does not exist."
@@ -613,7 +771,7 @@ class QueueManager(QDialog):
        clear_action = QAction("Clear Queue", self)
        clear_action.triggered.connect(self.clear_queue)
        menu.addAction(clear_action)
-        menu.exec_(global_pos)
+        menu.exec(global_pos)

    def accept(self):
        # Accept: keep changes
@@ -621,7 +779,7 @@ class QueueManager(QDialog):

    def reject(self):
        # Cancel: restore original queue
-        from PyQt5.QtWidgets import QMessageBox
+        from PyQt6.QtWidgets import QMessageBox

        # Warn if user changed a lot (e.g., more than 1 items difference)
        original_count = len(self._original_queue)
@@ -631,19 +789,19 @@ class QueueManager(QDialog):
                self,
                "Confirm Cancel",
                f"Are you sure you want to cancel and discard all changes?",
-                QMessageBox.Yes | QMessageBox.No,
-                QMessageBox.No,
+                QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                QMessageBox.StandardButton.No,
            )
-            if reply != QMessageBox.Yes:
+            if reply != QMessageBox.StandardButton.Yes:
                return
        self.queue.clear()
        self.queue.extend(deepcopy(self._original_queue))
        super().reject()

    def keyPressEvent(self, event):
-        from PyQt5.QtCore import Qt
+        from PyQt6.QtCore import Qt

-        if event.key() == Qt.Key_Delete:
+        if event.key() == Qt.Key.Key_Delete:
            self.remove_item()
        else:
            super().keyPressEvent(event)
@@ -14,4 +14,8 @@ class QueuedItem:
    output_format: str
    total_char_count: int
    replace_single_newlines: bool = False
+    use_silent_gaps: bool = False
+    subtitle_speed_method: str = "tts"
    save_base_path: str = None
+    save_chapters_separately: bool = None
+    merge_chapters_at_end: bool = None
@@ -14,6 +14,7 @@ warnings.filterwarnings("ignore")
 def detect_encoding(file_path):
    import chardet
    import charset_normalizer
+
    with open(file_path, "rb") as f:
        raw_data = f.read()
    detected_encoding = None
@@ -28,6 +29,7 @@ def detect_encoding(file_path):
    encoding = detected_encoding if detected_encoding else "utf-8"
    return encoding.lower()

+
 def get_resource_path(package, resource):
    """
    Get the path to a resource file, with fallback to local file system.
@@ -255,6 +257,12 @@ def calculate_text_length(text):


 def get_gpu_acceleration(enabled):
+    """
+    Check GPU acceleration availability.
+
+    Note: On Windows, torch DLLs must be pre-loaded in main.py before PyQt6
+    to avoid DLL initialization errors.
+    """
    try:
        import torch
        from torch.cuda import is_available as cuda_available
@@ -1,6 +1,6 @@
 import json
 import os
-from PyQt5.QtWidgets import (
+from PyQt6.QtWidgets import (
    QDialog,
    QVBoxLayout,
    QCheckBox,
@@ -22,12 +22,11 @@ from PyQt5.QtWidgets import (
    QFileDialog,
    QSplitter,
    QMenu,
-    QAction,
-    QComboBox,
    QApplication,
+    QComboBox,
 )
-from PyQt5.QtCore import Qt, QTimer, QPoint, QRect, QSize
-from PyQt5.QtGui import QPixmap, QIcon
+from PyQt6.QtCore import Qt, QTimer, QPoint, QRect, QSize
+from PyQt6.QtGui import QPixmap, QIcon, QAction
 from abogen.constants import (
    VOICES_INTERNAL,
    SUPPORTED_LANGUAGES_FOR_SUBTITLE_GENERATION,
@@ -91,7 +90,7 @@ class FlowLayout(QLayout):
        return len(self._item_list)

    def expandingDirections(self):
-        return Qt.Orientations(Qt.Orientation(0))
+        return Qt.Orientation(0)

    def hasHeightForWidth(self):
        return True
@@ -132,10 +131,14 @@ class FlowLayout(QLayout):
        for item in self._item_list:
            style = self.parentWidget().style() if self.parentWidget() else QStyle()
            layout_spacing_x = style.layoutSpacing(
-                QSizePolicy.PushButton, QSizePolicy.PushButton, Qt.Horizontal
+                QSizePolicy.ControlType.PushButton,
+                QSizePolicy.ControlType.PushButton,
+                Qt.Orientation.Horizontal,
            )
            layout_spacing_y = style.layoutSpacing(
-                QSizePolicy.PushButton, QSizePolicy.PushButton, Qt.Vertical
+                QSizePolicy.ControlType.PushButton,
+                QSizePolicy.ControlType.PushButton,
+                Qt.Orientation.Vertical,
            )
            space_x = spacing if spacing >= 0 else layout_spacing_x
            space_y = spacing if spacing >= 0 else layout_spacing_y
@@ -163,7 +166,7 @@ class VoiceMixer(QWidget):
        super().__init__()
        self.voice_name = voice_name
        self.setFixedWidth(VOICE_MIXER_WIDTH)
-        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)

        # TODO Set CSS for rounded corners
        # self.setObjectName("VoiceMixer")
@@ -173,7 +176,7 @@ class VoiceMixer(QWidget):

        # Name label at the top
        name = voice_name
-        layout.addWidget(QLabel(name), alignment=Qt.AlignCenter)
+        layout.addWidget(QLabel(name), alignment=Qt.AlignmentFlag.AlignCenter)

        # Voice name label with gender icon
        is_female = self.voice_name in VOICES_INTERNAL and self.voice_name[1] == "f"
@@ -181,7 +184,9 @@ class VoiceMixer(QWidget):
        # Icons layout (flag and gender)
        icons_layout = QHBoxLayout()
        icons_layout.setSpacing(3)
-        icons_layout.setAlignment(Qt.AlignCenter)  # Center the icons horizontally
+        icons_layout.setAlignment(
+            Qt.AlignmentFlag.AlignCenter
+        )  # Center the icons horizontally

        # Flag icon
        flag_icon_path = get_resource_path(
@@ -194,11 +199,21 @@ class VoiceMixer(QWidget):
        gender_label = QLabel()
        flag_pixmap = QPixmap(flag_icon_path)
        flag_label.setPixmap(
-            flag_pixmap.scaled(16, 16, Qt.KeepAspectRatio, Qt.SmoothTransformation)
+            flag_pixmap.scaled(
+                16,
+                16,
+                Qt.AspectRatioMode.KeepAspectRatio,
+                Qt.TransformationMode.SmoothTransformation,
+            )
        )
        gender_pixmap = QPixmap(gender_icon_path)
        gender_label.setPixmap(
-            gender_pixmap.scaled(16, 16, Qt.KeepAspectRatio, Qt.SmoothTransformation)
+            gender_pixmap.scaled(
+                16,
+                16,
+                Qt.AspectRatioMode.KeepAspectRatio,
+                Qt.TransformationMode.SmoothTransformation,
+            )
        )
        icons_layout.addWidget(flag_label)
        icons_layout.addWidget(gender_label)
@@ -210,7 +225,7 @@ class VoiceMixer(QWidget):
        self.checkbox = QCheckBox()
        self.checkbox.setChecked(initial_status)
        self.checkbox.stateChanged.connect(self.toggle_inputs)
-        layout.addWidget(self.checkbox, alignment=Qt.AlignCenter)
+        layout.addWidget(self.checkbox, alignment=Qt.AlignmentFlag.AlignCenter)

        # Spinbox and slider
        self.spin_box = QDoubleSpinBox()
@@ -219,26 +234,16 @@ class VoiceMixer(QWidget):
        self.spin_box.setDecimals(2)
        self.spin_box.setValue(initial_weight)

-        self.slider = QSlider(Qt.Vertical)
+        self.slider = QSlider(Qt.Orientation.Vertical)
        self.slider.setRange(0, 100)
        self.slider.setValue(int(initial_weight * 100))
-        self.slider.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Expanding)
+        self.slider.setSizePolicy(
+            QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Expanding
+        )
        self.slider.setFixedWidth(SLIDER_WIDTH)

-        # Fix slider in Windows
-        if platform.system() == "Windows":
-            appstyle = QApplication.instance().style().objectName().lower()
-            if appstyle != "windowsvista":
-                # Set custom groove color for disabled state using COLORS["GREY_BACKGROUND"]
-                self.slider.setStyleSheet(
-                    f"""
-                    QSlider::groove:vertical:disabled {{
-                        background: {COLORS.get("GREY_BACKGROUND")};
-                        width: 4px;
-                        border-radius: 4px;
-                    }}
-                """
-                )
+        # Apply slider styling after widget is added to window (see showEvent)
+        self._slider_style_applied = False

        # Connect controls
        self.slider.valueChanged.connect(lambda val: self.spin_box.setValue(val / 100))
@@ -249,23 +254,67 @@ class VoiceMixer(QWidget):
        # Layout for slider and labels
        slider_layout = QVBoxLayout()
        slider_layout.addWidget(self.spin_box)
-        slider_layout.addWidget(QLabel("1", alignment=Qt.AlignCenter))
+        slider_layout.addWidget(QLabel("1", alignment=Qt.AlignmentFlag.AlignCenter))

        slider_center_layout = QHBoxLayout()
-        slider_center_layout.addWidget(self.slider, alignment=Qt.AlignHCenter)
+        slider_center_layout.addWidget(
+            self.slider, alignment=Qt.AlignmentFlag.AlignHCenter
+        )
        slider_center_layout.setContentsMargins(0, 0, 0, 0)

        slider_center_widget = QWidget()
        slider_center_widget.setLayout(slider_center_layout)

        slider_layout.addWidget(slider_center_widget, stretch=1)
-        slider_layout.addWidget(QLabel("0", alignment=Qt.AlignCenter))
+        slider_layout.addWidget(QLabel("0", alignment=Qt.AlignmentFlag.AlignCenter))
        slider_layout.setStretch(2, 1)

        layout.addLayout(slider_layout, stretch=1)
        self.setLayout(layout)
        self.toggle_inputs()

+    def showEvent(self, event):
+        super().showEvent(event)
+        # Apply slider styling once when widget is shown and has access to parent
+        if not self._slider_style_applied:
+            self._slider_style_applied = True
+
+            # Fix slider in Windows
+            if platform.system() == "Windows":
+                appstyle = QApplication.instance().style().objectName().lower()
+                if appstyle != "windowsvista":
+                    # Set custom groove color for disabled state using COLORS["GREY_BACKGROUND"]
+                    self.slider.setStyleSheet(
+                        f"""
+                        QSlider::groove:vertical:disabled {{
+                            background: {COLORS.get("GREY_BACKGROUND")};
+                            width: 4px;
+                            border-radius: 4px;
+                        }}
+                    """
+                    )
+            else:
+                # Apply same fix for Light theme on non-Windows systems
+                # Get theme from parent window's config
+                parent_window = self.window()
+                theme = "system"
+                while parent_window:
+                    if hasattr(parent_window, "config"):
+                        theme = parent_window.config.get("theme", "system")
+                        break
+                    parent_window = parent_window.parent()
+
+                if theme == "light":
+                    self.slider.setStyleSheet(
+                        f"""
+                        QSlider::groove:vertical:disabled {{
+                            background: {COLORS.get("GREY_BACKGROUND")};
+                            width: 4px;
+                            border-radius: 4px;
+                        }}
+                    """
+                    )
+
    def toggle_inputs(self):
        is_enabled = self.checkbox.isChecked()
        self.spin_box.setEnabled(is_enabled)
@@ -307,9 +356,11 @@ class HoverLabel(QLabel):
            """
        )
        # Make sure the entire button is clickable, not just the text
-        self.delete_button.setFocusPolicy(Qt.NoFocus)
-        self.delete_button.setAttribute(Qt.WA_TransparentForMouseEvents, False)
-        self.delete_button.setCursor(Qt.PointingHandCursor)
+        self.delete_button.setFocusPolicy(Qt.FocusPolicy.NoFocus)
+        self.delete_button.setAttribute(
+            Qt.WidgetAttribute.WA_TransparentForMouseEvents, False
+        )
+        self.delete_button.setCursor(Qt.CursorShape.PointingHandCursor)
        self.delete_button.hide()

    def resizeEvent(self, event):
@@ -357,7 +408,7 @@ class VoiceFormulaDialog(QDialog):
        if parent is not None and hasattr(parent, "subtitle_combo"):
            self.subtitle_combo = parent.subtitle_combo
        # Create main container layout with profile section and mixer section
-        splitter = QSplitter(Qt.Horizontal)
+        splitter = QSplitter(Qt.Orientation.Horizontal)
        # Profile section
        profile_widget = QWidget()
        profile_layout = QVBoxLayout(profile_widget)
@@ -371,8 +422,8 @@ class VoiceFormulaDialog(QDialog):
        profile_layout.addLayout(header_layout)
        # Profile list
        self.profile_list = QListWidget()
-        self.profile_list.setSelectionMode(QListWidget.SingleSelection)
-        self.profile_list.setSelectionBehavior(QListWidget.SelectRows)
+        self.profile_list.setSelectionMode(QListWidget.SelectionMode.SingleSelection)
+        self.profile_list.setSelectionBehavior(QListWidget.SelectionBehavior.SelectRows)
        self.profile_list.setStyleSheet(
            "QListWidget::item:selected { background: palette(highlight); color: palette(highlighted-text); }"
        )
@@ -388,7 +439,7 @@ class VoiceFormulaDialog(QDialog):
            idx = list(profiles.keys()).index(self.current_profile)
            self.profile_list.setCurrentRow(idx)
        profile_layout.addWidget(self.profile_list)
-        self.profile_list.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.profile_list.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.profile_list.customContextMenuRequested.connect(
            self.show_profile_context_menu
        )
@@ -409,7 +460,9 @@ class VoiceFormulaDialog(QDialog):

        self.setWindowTitle("Voice Mixer")
        self.setWindowFlags(
-            Qt.Window | Qt.WindowCloseButtonHint | Qt.WindowMaximizeButtonHint
+            Qt.WindowType.Window
+            | Qt.WindowType.WindowCloseButtonHint
+            | Qt.WindowType.WindowMaximizeButtonHint
        )
        self.setMinimumSize(MIN_WINDOW_WIDTH, MIN_WINDOW_HEIGHT)
        self.resize(INITIAL_WINDOW_WIDTH, INITIAL_WINDOW_HEIGHT)
@@ -468,21 +521,25 @@ class VoiceFormulaDialog(QDialog):

        # Separator
        separator = QFrame()
-        separator.setFrameShadow(QFrame.Sunken)
+        separator.setFrameShadow(QFrame.Shadow.Sunken)
        mixer_layout.addWidget(separator)

        # Voice list scroll area
        self.scroll_area = QScrollArea()
        self.scroll_area.setWidgetResizable(True)
-        self.scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
-        self.scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        self.scroll_area.setHorizontalScrollBarPolicy(
+            Qt.ScrollBarPolicy.ScrollBarAsNeeded
+        )
+        self.scroll_area.setVerticalScrollBarPolicy(
+            Qt.ScrollBarPolicy.ScrollBarAsNeeded
+        )
        self.scroll_area.viewport().installEventFilter(self)

        self.voice_list_widget = QWidget()
        self.voice_list_layout = QHBoxLayout()
        self.voice_list_widget.setLayout(self.voice_list_layout)
        self.voice_list_widget.setSizePolicy(
-            QSizePolicy.Expanding, QSizePolicy.Expanding
+            QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding
        )
        self.scroll_area.setWidget(self.voice_list_widget)
        mixer_layout.addWidget(self.scroll_area, stretch=1)
@@ -497,6 +554,9 @@ class VoiceFormulaDialog(QDialog):
        ok_button.setDefault(True)
        ok_button.setFocus()

+        # Connect buttons
+        clear_all_button.clicked.connect(self.clear_all_voices)
+        ok_button.clicked.connect(self.accept)
        # Connect buttons
        clear_all_button.clicked.connect(self.clear_all_voices)
        ok_button.clicked.connect(self.accept)
@@ -533,7 +593,7 @@ class VoiceFormulaDialog(QDialog):

    def keyPressEvent(self, event):
        # Bind Delete key to delete_profile when a profile is selected
-        if event.key() == Qt.Key_Delete and self.profile_list.hasFocus():
+        if event.key() == Qt.Key.Key_Delete and self.profile_list.hasFocus():
            item = self.profile_list.currentItem()
            if item:
                self.delete_profile(item)
@@ -562,10 +622,12 @@ class VoiceFormulaDialog(QDialog):
                self,
                "Unsaved Changes",
                msg,
-                QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel,
-                QMessageBox.Save,
+                QMessageBox.StandardButton.Save
+                | QMessageBox.StandardButton.Discard
+                | QMessageBox.StandardButton.Cancel,
+                QMessageBox.StandardButton.Save,
            )
-            if ret == QMessageBox.Save:
+            if ret == QMessageBox.StandardButton.Save:
                # Save all using stored states
                profiles = load_profiles()
                for i in dirty_indices:
@@ -590,7 +652,7 @@ class VoiceFormulaDialog(QDialog):
                self.update_profile_save_buttons()
                self.update_profile_list_colors()
                return True
-            elif ret == QMessageBox.Discard:
+            elif ret == QMessageBox.StandardButton.Discard:
                # Discard all modifications
                self._profile_states.clear()
                for i in dirty_indices:
@@ -612,17 +674,19 @@ class VoiceFormulaDialog(QDialog):
        else:
            # Fallback to original logic for 0 or 1 dirty profile
            box = QMessageBox(self)
-            box.setIcon(QMessageBox.Warning)
+            box.setIcon(QMessageBox.Icon.Warning)
            box.setWindowTitle("Unsaved Changes")
            box.setText(
                "You have unsaved changes in your profile. Do you want to save the changes?"
            )
            box.setStandardButtons(
-                QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel
+                QMessageBox.StandardButton.Save
+                | QMessageBox.StandardButton.Discard
+                | QMessageBox.StandardButton.Cancel
            )
-            box.setDefaultButton(QMessageBox.Save)
-            ret = box.exec_()
-            if ret == QMessageBox.Save:
+            box.setDefaultButton(QMessageBox.StandardButton.Save)
+            ret = box.exec()
+            if ret == QMessageBox.StandardButton.Save:
                for i in range(self.profile_list.count()):
                    item = self.profile_list.item(i)
                    name = item.text().lstrip("*")
@@ -636,7 +700,7 @@ class VoiceFormulaDialog(QDialog):
                if hasattr(parent, "populate_profiles_in_voice_combo"):
                    parent.populate_profiles_in_voice_combo()
                return True
-            elif ret == QMessageBox.Discard:
+            elif ret == QMessageBox.StandardButton.Discard:
                profiles = load_profiles()
                for i in range(self.profile_list.count()):
                    item = self.profile_list.item(i)
@@ -717,7 +781,7 @@ class VoiceFormulaDialog(QDialog):
        return voice_mixer

    def handle_voice_checkbox(self, voice_mixer, state):
-        if state == Qt.Checked:
+        if state == Qt.CheckState.Checked.value:
            self.last_enabled_voice = voice_mixer.voice_name
        self.update_weighted_sums()

@@ -767,7 +831,9 @@ class VoiceFormulaDialog(QDialog):
                    f'<b><span style="color:{COLORS.get("BLUE")}">{name}: {percentage:.1f}%</span></b>',
                    name,
                )
-                voice_label.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
+                voice_label.setSizePolicy(
+                    QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Preferred
+                )
                voice_label.delete_button.clicked.connect(
                    lambda _, vn=name: self.disable_voice_by_name(vn)
                )
@@ -787,7 +853,7 @@ class VoiceFormulaDialog(QDialog):
            mixer.checkbox.setChecked(False)

    def eventFilter(self, source, event):
-        if source is self.scroll_area.viewport() and event.type() == event.Wheel:
+        if source is self.scroll_area.viewport() and event.type() == event.Type.Wheel:
            # Skip if over an enabled slider
            if any(
                mixer.slider.underMouse() and mixer.slider.isEnabled()
@@ -890,10 +956,10 @@ class VoiceFormulaDialog(QDialog):
            self,
            "Invalid Profiles",
            msg,
-            QMessageBox.Yes | QMessageBox.Cancel,
-            QMessageBox.Yes,
+            QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.Cancel,
+            QMessageBox.StandardButton.Yes,
        )
-        if reply == QMessageBox.Yes:
+        if reply == QMessageBox.StandardButton.Yes:
            for i, name in reversed(zero):
                self.profile_list.takeItem(i)
                delete_profile(name)
@@ -980,8 +1046,8 @@ class VoiceFormulaDialog(QDialog):
        super().closeEvent(event)

    def _parse_rgba_to_qcolor(self, rgba_str):
-        from PyQt5.QtCore import Qt
-        from PyQt5.QtGui import QColor
+        from PyQt6.QtCore import Qt
+        from PyQt6.QtGui import QColor

        """Helper to convert 'rgba(R,G,B,A_float)' string to QColor."""
        match = re.match(r"rgba\((\d+),\s*(\d+),\s*(\d+),\s*([\d.]+)\)", rgba_str)
@@ -1136,9 +1202,12 @@ class VoiceFormulaDialog(QDialog):
                    msg += f"\nThis will overwrite an existing profile."
                msg += "\nContinue?"
                reply = QMessageBox.question(
-                    self, "Import Profile", msg, QMessageBox.Yes | QMessageBox.No
+                    self,
+                    "Import Profile",
+                    msg,
+                    QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
                )
-                if reply != QMessageBox.Yes:
+                if reply != QMessageBox.StandardButton.Yes:
                    return
                profiles.update(imported_profiles)
                save_profiles(profiles)
@@ -1153,9 +1222,12 @@ class VoiceFormulaDialog(QDialog):
                    msg += f"\n{len(collisions)} profile(s) will be overwritten."
                msg += "\nContinue?"
                reply = QMessageBox.question(
-                    self, "Import Profiles", msg, QMessageBox.Yes | QMessageBox.No
+                    self,
+                    "Import Profiles",
+                    msg,
+                    QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
                )
-                if reply != QMessageBox.Yes:
+                if reply != QMessageBox.StandardButton.Yes:
                    return
                profiles.update(imported_profiles)
                save_profiles(profiles)
@@ -1196,7 +1268,7 @@ class VoiceFormulaDialog(QDialog):
        menu.addAction(dup_act)
        menu.addAction(export_act)
        menu.addAction(delete_act)
-        act = menu.exec_(self.profile_list.viewport().mapToGlobal(pos))
+        act = menu.exec(self.profile_list.viewport().mapToGlobal(pos))
        if act == rename_act:
            self.rename_profile(item)
        elif act == delete_act:
@@ -1323,9 +1395,9 @@ class VoiceFormulaDialog(QDialog):
            self,
            "Delete Profile",
            f"Delete profile '{name}'?",
-            QMessageBox.Yes | QMessageBox.No,
+            QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
        )
-        if reply == QMessageBox.Yes:
+        if reply == QMessageBox.StandardButton.Yes:
            delete_profile(name)
            row = self.profile_list.row(item)
            self.profile_list.takeItem(row)
@@ -1378,7 +1450,7 @@ class VoiceFormulaDialog(QDialog):
                self.profile_list.setItemWidget(item, widget)

    def update_profile_list_colors(self):
-        from PyQt5.QtCore import Qt
+        from PyQt6.QtCore import Qt

        profiles = load_profiles()
        for i in range(self.profile_list.count()):
@@ -1386,13 +1458,14 @@ class VoiceFormulaDialog(QDialog):
            name = item.text().lstrip("*")
            if self._virtual_new_profile and name == "New profile":
                color = self._parse_rgba_to_qcolor(COLORS.get("YELLOW_BACKGROUND"))
-                item.setData(Qt.BackgroundRole, color)
+                item.setData(Qt.ItemDataRole.BackgroundRole, color)
            elif item.text().startswith("*"):
                color = self._parse_rgba_to_qcolor(COLORS.get("YELLOW_BACKGROUND"))
-                item.setData(Qt.BackgroundRole, color)
+                item.setData(Qt.ItemDataRole.BackgroundRole, color)
            else:
                item.setData(
-                    Qt.BackgroundRole, self.profile_list.palette().base().color()
+                    Qt.ItemDataRole.BackgroundRole,
+                    self.profile_list.palette().base().color(),
                )
                weights = profiles.get(name, {}).get("voices", [])
                total = 0
@@ -1406,7 +1479,7 @@ class VoiceFormulaDialog(QDialog):
                            total += entry[1]
                if total == 0:
                    color = self._parse_rgba_to_qcolor(COLORS.get("RED_BACKGROUND"))
-                    item.setData(Qt.BackgroundRole, color)
+                    item.setData(Qt.ItemDataRole.BackgroundRole, color)
        self.update_profile_save_buttons()

    def preview_current_mix(self):
@@ -13,7 +13,7 @@ license = "MIT"
 requires-python = ">=3.10, <3.13"
 keywords = ["audiobook", "epub", "pdf", "text-to-speech", "subtitle", "tts", "kokoro", "accessibility", "book-converter", "voice-synthesis", "multilingual", "chapter-management", "subtitles", "content-creation", "media-generation"]
 dependencies = [
-    "PyQt5>=5.15.11",
+    "PyQt6>=6.10.0",
    "kokoro>=0.9.4",
    "misaki[zh]>=0.9.4",
    "ebooklib>=0.19",
Author	SHA1	Message	Date
Deniz Şafak	f477703b1a	v1.2.3	2025-11-19 02:24:42 +03:00
Deniz Şafak	6b3125b624	v1.2.2	2025-11-19 02:06:33 +03:00
Deniz Şafak	bb5c4204de	Reformat using black	2025-11-19 01:54:11 +03:00
Deniz Şafak	43f5589a9d	Update changelog and images	2025-11-19 01:39:50 +03:00
Deniz Şafak	10d3f470e7	Add support for embedding cover images in M4B files and update documentation	2025-11-19 01:03:10 +03:00
Deniz ŞafakandGitHub	c72c8e777c	Update CHANGELOG	2025-11-18 15:27:09 +03:00
Deniz ŞafakandGitHub	b51e094af1	Update CHANGELOG with subtitle audio generation details Added detailed instructions for generating audio from subtitle files.	2025-11-18 15:24:44 +03:00
Deniz ŞafakandGitHub	04844997d5	Update README.md	2025-11-18 15:13:42 +03:00
Deniz ŞafakandGitHub	7835211a25	Update README.md	2025-11-18 15:07:38 +03:00
Deniz Şafak	6bb6fcb406	Add subtitle file voicing feature, improvements in code and documentation	2025-11-18 04:37:15 +03:00
Deniz ŞafakandGitHub	ad8a6e520e	Update WINDOWS_INSTALL.bat	2025-11-17 12:23:00 +03:00
Deniz Şafak	fe22fe83b0	Possible fix for "CUDA is not available" issue, improvements in code and readme	2025-11-16 01:30:32 +03:00
Deniz Şafak	afbd5203fe	Fixed `[WinError 1114] A dynamic link library (DLL) initialization routine failed`, Potential fix for `CUDA GPU is not available`	2025-10-30 12:52:46 +03:00
Deniz ŞafakandGitHub	4b175c7cf2	Update PyTorch installation instructions for version 2.8.0	2025-10-30 12:07:19 +03:00
Deniz ŞafakandGitHub	334c0654ca	Modify PyTorch installation for CUDA 12.8 Updated PyTorch installation commands to use version 2.8.0 with CUDA (12.8) support.	2025-10-30 12:06:24 +03:00
Deniz ŞafakandGitHub	42b7979585	Add libxcb-cursor0 and libgl1 to Dockerfile Mentioned in #97	2025-10-30 02:16:04 +03:00
Deniz Şafak	c994c2eeb0	v1.2.1	2025-10-28 02:48:06 +03:00
Deniz Şafak	e4fe8122ff	Fix book handler showing old cache when replace_single_newlines changed	2025-10-27 18:27:07 +03:00
Deniz Şafak	4cef65e70e	Fix replace single newlines preview, remove unused imports	2025-10-27 18:15:28 +03:00
Deniz Şafak	24d5588f09	Improvements in code	2025-10-27 17:50:59 +03:00
Deniz Şafak	7883b8865b	Fixed light theme slider colors in voice mixer	2025-10-27 17:43:54 +03:00
Deniz Şafak	47fe6341b4	Reformat using black	2025-10-27 17:26:54 +03:00
Deniz Şafak	9d2e8bed00	Added `Open processed file` and `Open input file` options for items in the queue manager	2025-10-27 17:24:23 +03:00
Deniz Şafak	eedf347866	Upgraded Abogen's interface from PyQt5 to PyQt6, Added tooltip indicators in queue manager	2025-10-27 17:08:32 +03:00
Deniz Şafak	0d0d3b7871	Fixed subtitle word-count splitting logic for more accurate segmentation	2025-10-22 18:27:26 +03:00
Deniz Şafak	f80c86b00d	Added loading gif animation to book handler window	2025-10-22 01:21:55 +03:00
Deniz Şafak	f5d1def330	v1.2.0	2025-10-20 03:57:16 +03:00
Deniz Şafak	4a28bfb859	Fixed “Go to folder” button not opening the chapter output directory when only separate chapters were generated	2025-10-20 03:51:27 +03:00
Deniz Şafak	4adda262c0	Fix total character count	2025-10-20 03:35:20 +03:00
Deniz Şafak	1d02802172	Add "How to fix "[WinError 1114]" error to readme	2025-10-20 03:21:27 +03:00
Deniz Şafak	28c0b2c401	Use a newer Python in Windows installer script	2025-10-20 02:29:16 +03:00
Deniz Şafak	1e89b566d1	Added a loading indicator to the book handler window	2025-10-20 01:17:14 +03:00
Deniz Şafak	ccb350fa08	Normalize platformpath	2025-10-19 17:17:40 +03:00
Deniz Şafak	42336145dd	Fixed taskbar icon not appearing correctly in Windows	2025-10-19 17:13:29 +03:00
Deniz Şafak	5d2da7e91c	Fixed book reprocessing issue	2025-10-19 16:37:34 +03:00
Deniz Şafak	e69195e6ef	Update changelog, fix wrong os import	2025-10-19 16:15:32 +03:00
Deniz Şafak	1520b971ac	Fixed `/` and `\` path display by normalizing paths	2025-10-19 16:02:36 +03:00
Deniz Şafak	d426bac87e	Fixed folder and filename sanitization to properly handle OS-specific illegal characters	2025-10-19 15:40:10 +03:00
Deniz Şafak	866746c5a1	Added `Line` option to subtitle generation modes	2025-10-08 00:18:39 +03:00
Deniz ŞafakandGitHub	58889d47b0	Merge pull request #94 from mleg/main Add `Line` option for subtitle generation Thank you, merged!	2025-10-08 00:13:40 +03:00
Deniz Şafak	ae148eb591	Update readme	2025-10-07 23:56:17 +03:00
Deniz Şafak	14ed98c316	Update readme	2025-10-07 23:52:58 +03:00
Deniz Şafak	eacbe05934	Fixed `cannot access local variable 'is_narrow'` error	2025-10-07 23:42:35 +03:00
Маслов Олег	e7fb89f137	Add `Line` option for subtitle generation	2025-10-05 16:00:49 +03:00
Deniz Şafak	033c809b95	Update changelog	2025-09-18 03:12:35 +03:00
Deniz Şafak	f492cc2506	v1.1.9	2025-09-18 03:11:52 +03:00
Deniz Şafak	495a50f666	Merge branch 'main' of https://github.com/denizsafak/abogen	2025-09-18 03:09:04 +03:00
Deniz Şafak	8c6e292f4f	Fixed markdown TOC generation	2025-09-18 03:08:30 +03:00
Deniz Şafak	1d8cb8eabd	Fixed the issue where spaces were deleted before punctuation marks	2025-09-18 02:37:58 +03:00
Deniz ŞafakandGitHub	a3ee95e83f	Update readme	2025-09-18 01:50:28 +03:00
Deniz ŞafakandGitHub	a98f75c1a9	Update readme	2025-09-17 23:07:36 +03:00
Deniz Şafak	f4f3a4c207	Update readme	2025-09-17 22:39:45 +03:00
@@ -1 +1 @@
 .1.8
 .2.3