ffmpeg -i input.mp4 -c:v libaom-av1 -crf 30 \ -c:a libopus -b:a 128k \ -map 0:v:0 -map 0:a:0 \ -metadata:s:v:0 title="av01008m08" \ -metadata:s:a:0 title="opus 251 new" \ output.mp4
This specific combination of terms refers to the high-efficiency playback formats currently used by YouTube, which you can often see when enabling "Stats for Nerds" on a video. Decoding the Terms av01.0.08M.08 : This represents the AV1 (AOMedia Video 1) video codec. : The specific identifier for AV1. : Profile 0 (Main profile). codecs av01008m08 399 opus 251 new
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