output format:
flv mp4 mpegts matroska ogg mp3
start: ms
duration: ms

disable audio output:
output audio codec:
copy aac mp3 opus vorbis flac speex ac3 eac3 dts pcm_alaw pcm_mulaw
output audio bitrate: bps
output audio samplerate:

disable video output:
output video codec:
copy h264 hevc av1 vp9 vp8 mpeg4
enable webcodecs:
enable hardwareAcceleration:
output video width:
output video height:
output video bitrate: bps
output video framerate: