gists/ffmpeg.md

# ffmpeg

## Split video at marks
```
ffmpeg -ss 00:00:00 -to 99:99:99 -i input.mp4 -c copy output.mp4
```

## Hardware accelerated MP4 video conversion
```
ffmpeg -i input_video.webm -vaapi_device /dev/dri/renderD128 -vcodec h264_vaapi -vf format='nv12|vaapi,hwupload' output_video.mp4
```