[MPlayer-dev-eng] lavf demuxers and fourcc

[Michael Niedermayer]

Hi

On Thursday 15 July 2004 00:56, Roberto Togni wrote:
> Hi all.
>
> I got into this problem while using lavf demuxer (and lavd decoder) to
> play raw h.261 files.
>
> MPlayer requires a fourcc to select the right codec, while lavf/lavc
> uses a codec_id. For codecs that have an official fourcc, the mapping
> is done with codec_get_bmp_tag(codec_id), but what to do with mplayer-
> only fourccs?
> Convert them in lavf (see attached patch) or add mplayer-specific
> fourccs to avienc.c in lavf?
>
> h261 is just a sample case (you can really find h261 video in avi, so
> probably should be added to lavf), but what about all the strange
> demuxers (fli, game formats, ...) that don't use fourccs?
well, IMHO every codec should have a fourcc in lavf, that way we can 
streamcopy it into avi, nut or another general purpose format, it would also 
be nice if we could tag such non-standard fourccs in the avienc.c table so 
that a warning could be shown to the user, but thats not that important ATM

-- 
Michael
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