[FEAT] VP9 / AV1 transcoding support (FFmpeg or native codec libs)

[polosugars-sketch]

[JoshAtticus]

@polosugars-sketch Your issue is invalid and has been closed. It will not be considered at all. Please do not open blank issues, you are required to fill out the issue form. Furthermore, Compressor already supports AV1. FFMpeg will absolutely not be added ever.