[NUT-devel] [PATCH] fourcc spec

Michael Niedermayer michaelni at gmx.at
Tue Apr 18 12:40:23 CEST 2006


On Sat, Apr 15, 2006 at 05:30:38PM -0400, Rich Felker wrote:
> > and may i suggest to do mpeg audio/video more consistant?
> > 
> > mpegX      video "MXV",0 (M1V,M2V,M4V)
> > AC3     "AC3",0
> > H26X    "H26X"
> Looks good. What about h263+? :)

i feared such a question, as it requres us to decide about where to
draw the line for profiles, later versions of a codec and so on
what about 4:2:2 mpeg2? 

> > mp3     "MP3",0
> And "MP2",0 "MP1",0 ...?

and what about mpeg1-mp3 vs. mpeg2-mp3 IIRC there are a few differences

> > and a generic suggestion that the file extension should be used as
> > fourcc if theres a well known filename extension for the elementary
> > stream
> > and generic suggestion 2 if theres a well known avi fourcc then that
> > should be used
> These seem reasonable.
> Can we clarify that the "well known avi fourcc" should refer to the
> compression format and not a specific implementation name or marketing
> crap?



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