2017-10-17 23:48 GMT+02:00 James Almer <jamr...@gmail.com>: > On 10/17/2017 6:20 PM, Carl Eugen Hoyos wrote: >> 2017-10-17 22:20 GMT+02:00 James Almer <jamr...@gmail.com>: >>>> ffmpeg | branch: master | Carl Eugen Hoyos <ceffmpeg at gmail.com >>>> <http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog>> | Tue Oct 17 21:35:28 >>>> 2017 +0200| [a3accd0c3768933f15422c9dec596da0f436d786] | committer: Carl >>>> Eugen Hoyos >>>> >>>> lavf/cafenc: Allow muxing opus. >>>> >>>> QuickTime does not require the (unknown) kuki chunk for decoding. >>> >>> This at the very least requires limiting muxing to mono and stereo >>> streams (The only kind of streams that work without channel mapping >>> information in extradata), >> >> Done, thank you! >> >>> and a check for -strict experimental. >> >> Why? > > Because we're creating these files blindly
This is not correct (and offending, no matter the issue with the original patch). > without a proper RE attempt How do you know? > or following any kind of encapsulation spec. And considering the > official encoder/muxer adds a codec specific chunk we don't, the more > reason to consider a muxing as barebones as this as something > potentially non-compliant. Imo, this is not a helpful approach: The "official" demuxer/decoder accept the files, how does it make sense to argue they are potentially non-compliant? >>> Also, I'd have rather waited for Apple to update their docs about Opus >>> in CAF. >> >> As in: Until Godot arrives? >> >> Sorry, I don't think it makes much sense to wait for a >> specification that to best of our knowledge may never >> appear. > > Apple published the spec for CAF > detailing encapsulation details for the codecs it supports Depending on the definition of "detailing": Yes. (For most codecs, the encapsulation details had to be guessed.) > including the contents of the kuki chunk for most of them. Could you elaborate? This is not how I remember it. Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
