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Support muxing DASH video with audio extracted from other A/V stream (YouTube) #2435
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It seems to work fine ( |
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At the moment the highest quality video on YouTube is often 1080p DASH stream, but the highest quality DASH audio is often only 128 kbps, whereas the 720p combined MP4 often contains 192 kbps audio.
It would be great for this reason to be able to choose video and audio sources explicitly, e.g. -v 137 -a 22, then have the relevant portions of the streams remuxed. At present, doing -f 137+22 fails (because 22 isn't an audio-only stream I guess).
Another option that would be great would be an auto option for finding the best video across video-only/AV streams, and the best audio across audio-only/AV streams, then muxing these (but would depend on being able to sniff the audio quality from an AV stream if that's not fixed from the format code I guess).
Great work with this downloader in any case, thanks!