[FFmpeg-cvslog] r19173 - trunk/libavformat/adtsenc.c

Baptiste Coudurier baptiste.coudurier
Tue Jun 30 20:05:19 CEST 2009

M?ns Rullg?rd wrote:
> Baptiste Coudurier <baptiste.coudurier at gmail.com> writes:
>> On 6/30/2009 3:08 AM, M?ns Rullg?rd wrote:
>>> Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:
>>>> On Tue, Jun 30, 2009 at 11:44:33AM +0200, Benjamin Larsson wrote:
>>>>> Reimar D?ffinger wrote:
>>>>>> Huh? That may be true for the particularly ugly formats, but there
>>>>>> should be quite few formats/codecs where it doesn't.
>>>>>> Also, a libavcommon wouldn't help a bit with that issue, so it that
>>>>>> seems irrelevant in this discussion...
>>>>> Most stuff is broken without codecs.
>>>> Examples? Also I think it is possible to have the parser without the
>>>> codecs, though I think it currently doesn't save much space.
>>>> What are the codecs needed for except containers that contain
>>>> insufficient data (basically MPEG-*)?
>>> MPEG-* contains sufficient data to pass the elementary streams to the
>>> correct decoder.  Stop claiming otherwise.
>> Really ?
>> 1110 xxxx ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 or
>> ISO/IEC 14496-2 video stream number xxxx
>> How do you know which codec it is except by parsing the elementary stream ?
> You don't need to know:
>   8.1       ISO/IEC 11172-2 compatibility
>   ISO/IEC 11172-2 "constrained parameter" bitstreams shall be
>   decodable by Simple, Main, SNR Scalable, Spatially Scalable and High
>   profile decoders at all levels. Additionally Simple, Main, SNR
>   Scalable, Spatially Scalable and High profile decoders shall be able
>   to decode D-pictures-only bitstreams of ISO/IEC 11172-2 which are
>   within the level constraints of the decoder.

You missed the 14496-2 detail :)

Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
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