[NUT-devel] Fourcc spec

[Baptiste Coudurier]

Hi

Michael Niedermayer wrote:
> Hi
> 
> On Fri, Nov 17, 2006 at 10:33:20AM +0100, Baptiste Coudurier wrote:
>> Hi
>>
>> Oded Shimon wrote:
>>> This specification is normative to demuxers, informative to muxers. It 
>>> does not need to be actively maintained, because it does NOT list all 
>>> legal fourcc's, only the ones noted by the specification. I'd like to 
>>> commit it to nut/docs/fourcc.txt .
>>>
>>> - ods15
>>>
>>> Demuxers which support the codec listed MUST support the fourcc listed
>>> here.
>>> Muxers SHOULD use the fourcc listed here for codecs.
>>>
>>> Video:
>>> "mp4s"        MPEG-4 Part 2
>> NO PLEASE ! "mp4v"
>> mp4s is used in mov/mp4/3gp to specify data/subs/whatever.
>>
>>> "h263"        H.263
>>> "h264"        MPEG-4 Part 10/H.264
>>> "snow"        Snow
>>> "drac"        Dirac/Schroedinger
>>> "vc1 "        VC-1
>>>
>>> Audio:
>>> "vrbs"        Xiph.org Vorbis
>>> "mp2 "        MP2
>>> "mp3 "        MP3
>>> "ac3 "        AC3
>>> "aac "        AAC/MPEG-4 Part 3
>>> "eac3"        EAC3
>>> "flac"        Free Lossless Audio Codec
>>> "wavp"        WavPack
>>>
>> Ok but please do not put them in riff.c ;)
> 
> no, and add a syntax element to the stream headers which says which
> type of codec id is used avi style or nut style (or qt style) hmm
> i do think you can copy and paste the text from matroska that will
> save some time
> 
> if this gets accepted we have surpassed avi and mov in brokenness
> several seperate codec id systems
> 

Why doesn't nut use twocc like in avi ? it's the most spread format. And
it will avoid duplicating tables.

-- 
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