[MPlayer-dev-eng] incoming/Vorbis_in_MP4_lavf_fail.mp4

[Michael Niedermayer]

Hi

On Sat, Mar 17, 2007 at 12:39:59AM +0100, Baptiste Coudurier wrote:
> Hi
> 
> Michael Niedermayer wrote:
> > Hi
> > 
> > On Fri, Mar 16, 2007 at 06:36:46PM +0100, Reimar Döffinger wrote:
> >> Hello,
> >> On Fri, Mar 16, 2007 at 03:56:58PM +0100, Nico Sabbi wrote:
> >>> Compn wrote:
> >>>> ffplay and mplayer detects audio correctly
> >>>>
> >>>> mplayer -demuxer lavf does not.
> >>>>
> >>>> adding format 0x6134706D to audiocodec vorbis allows it to play
> >>>> but its still trying faad first.
> >>>>
> >>>> Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
> >>>> FAAD: Failed to initialize the decoder!
> >>>> ADecoder init failed :(
> >>>> ADecoder init failed :(
> >>>> Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
> >>>> AUDIO: 48000 Hz, 2 ch, s16le, 0.0 kbit/0.00% (ratio: 0->192000)
> >>>> Selected audio codec: [ffvorbis] afm: ffmpeg (FFmpeg Vorbis decoder)
> >>>>
> >>>>
> >>>>
> >>> try with svn blame who broke it, please.
> >> I think this was never fixed. The problem IIRC is that lavf demuxer uses
> >> a different mov atom to detect the format, but that one only contains
> >> "mp4a".
> > 
> > if codec_tag is mp4a then this is wrong, codec_tag should contain the thing
> > which is looked up in ff_mov_obj_type
> > 
> > grep ff_mov_obj_type in lavf/mov.c set codec_tag to it run regression tests
> > check if this fixes the mplayer+lavf problem send patch
> > 
> 
> Humm well it makes sense for mp4, not sure for mov, dunno if other
> codecs use "mp4a" as stsd tag in mov but stores something else and use
> "esds" atom, and tag will be a simple int, but I've no real objection.

hmm esds in mov? i thought esds is mp4 specific, ive checked the QT spec
i have theres no match for "esds" ...

my idea was that mov would set codec_tag like it does currently and .mp4
would set it based on esds (= whats in ff_mov_obj_type)

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Democracy is the form of government in which you can choose your dictator
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