Horrible cracking sound. about mpv

[CounterPillow]

Thanks for sharing your porn with us

[kasper93]

The file in OP seems broken. Lots of [ffmpeg/audio] aac: ChannelElement 1.0 missing warnings. The difference is how this brokenness is handled.

--ad=libfdk_aac plays this file as mono without issues. But it is likely broken file and if we don't have more samples that expose similar issues, I don't think it is worth putting effort fixing this "random" video, you can watch without audio.

SFW sample with similar audio issues, plays fine in VLC. https://0x0.st/XoHe.mkv

This is completely different issue. mkv != mp4, aac != ac3. Please don't hijack issues, it only derails discussion and pulls attention away from the original problem. I've reported it on ffmpeg trac https://trac.ffmpeg.org/ticket/10968

[llyyr]

Firefox has the same audio artifacts, this is most likely a FFmpeg issue. Also you could've shared just the audio track.

edit: ffplay plays it correctly

[laichiaheng]

Firefox has the same audio artifacts, this is most likely a FFmpeg issue. Also you could've shared just the audio track.

edit: ffplay plays it correctly

It didn't happen on Firefox when I posted this issue, but it happens now, weird.

[po5]

SFW sample with similar audio issues, plays fine in VLC. https://0x0.st/XoHe.mkv

[richardpl]

If you extract codec copy copy into .ac3 file that SFW sample above it also plays fine with ffplay. Something is very broken with lavf/mpv mkv demuxer or file is invalid and needs parser to properly split packets from bitstream.

[na-na-hi]

The file in OP seems broken. Lots of [ffmpeg/audio] aac: ChannelElement 1.0 missing warnings. The difference is how this brokenness is handled.

mpv-x86_64-20220227-git-b1fb4b7 plays this as a mono audio, while mpv-x86_64-20230226-git-16f0cd5 plays this as a "stereo" audio but with only the left channel active, and also has this artifact. Similar pattern is observed for MPC-HC with LAVFilters where earlier versions detect this file as a mono, but stereo for later versions, also with the same artifact.

So somewhere between 20220227 and 20230226 a change in FFmpeg caused this.

This artifact also doesn't happen 100% of the time, seems purely random.

SFW sample with similar audio issues, plays fine in VLC. https://0x0.st/XoHe.mkv

Interesting. None of my tested mpv binaries as early as from 2017 work with this file so this must have been broken for so long. Audio also plays fine in MPC-HC.