[SUSPECT ATTACHMENT] Re: [Ffmpeg-devel] Re: Problems encoding H264 with a MP4 / MOV container with ffmpeg
Thu Jun 16 20:03:25 CEST 2005
> Thank you for your reply. Your implementation seem to be the correct one.
> ffmpeg's movenc.c one seem to have a problem, perhaps it doesn't create
> the "avcC" data which leads to unplayability with Quicktime 7. I'm not a
> specialist of MP4 muxing however.
> I send you in attachments a file encoded with ffmpeg and one muxed with
> mp4v2, perhaps you could compare and if you see anything wrong in the
> ffmpeg stream, you could post some hints to the ffmpeg-devel list? Erik
> Slagter or someone else could then use your info to fix the code.
Yes. It does not create the avcC atom required. This is 14496-15, section
18.104.22.168, AVCDecoderConfigurationRecord. It's basically got the 1st 3
bytes of the seq paramaeter set, then all the sequence and parameter
For Quicktime, the seq and parameter sets should not be in the bitstream,
but only in the avcC.
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