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45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
# How to Create Videos Like the Demo (52 seconds in just 736kB!)
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This guide explains how I created such a small yet effective demonstration video, being only **736kB** for a **52-second video**!
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https://github.com/user-attachments/assets/9e4fc237-a3cd-46bd-b82c-c608336d6411
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### What You Need
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- A background image (bg.jpg)
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- The subtitle file (.ass) **(created by Abogen)**
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- Select `ass(centered narrow)` as subtitle format in settings.
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- The audio recording (.wav) **(created by Abogen)**
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- FFmpeg installed on your computer:
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```bash
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# Windows
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winget install ffmpeg
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# MacOS
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brew install ffmpeg
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# Linux
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sudo apt install ffmpeg
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```
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## Create the Video (.mp4) (Recommended)
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Run this FFmpeg command to create the video:
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```
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ffmpeg -loop 1 -framerate 24 -i bg.jpg -i demo.wav -vf "ass=demo.ass" -c:v libx264 -pix_fmt yuv420p -preset slow -crf 18 -c:a aac -b:a 192k -movflags +faststart -shortest demo.mp4
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```
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## For Smaller Filesize (.webm)
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If you need a smaller video file, use this command:
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```
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ffmpeg -loop 1 -framerate 24 -i bg.jpg -i demo.wav -vf "ass=demo.ass" -c:v libvpx-vp9 -b:v 0 -crf 30 -c:a libopus -shortest demo.webm
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```
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