### https://trac.ffmpeg.org/wiki/Encode/VP9
### YouTube bitrates: https://support.google.com/youtube/answer/1722171?hl=en
### Other settings: https://developers.google.com/media/vp9/settings/vod/

## 1080p @ 30fps
# 2-pass (preferred):
ffmpeg -i input.avi -an -r 30 -threads 4 -crf 30 -b:v 8M -maxrate 12M -c:v libvpx-vp9 -pix_fmt gbrp -pass 1 output.mkv && ffmpeg -i input.avi -an -r 30 -threads 4 -b:v 8M -maxrate 12M -c:v libvpx-vp9 -pix_fmt gbrp -pass 2 -y output.mkv

# 1-pass:
ffmpeg -i input.avi -an -r 30 -threads 4 -crf 30 -b:v 8M -maxrate 12M -c:v libvpx-vp9 -pix_fmt gbrp output.mkv
