[vorbis-dev] Re: [theora-dev] Changes to Ogg format IETF I-D

[Silvia.Pfeiffer at csiro.au]

FIXED. (Didn't wanna be overly detailed, but it might be better :)

Thanks,
Silvia.

Michael Smith wrote:
>>2) The main paragraph of trouble (the one that stopped it going forward
>>to RFC at the IETF) merged several feedbacks and changed to (Section 4):
>>
>>< The bos page contains information to uniquely
>>< identify the codec type and MAY contain information to set up the
>>< decoding process. The bos page SHOULD also contain information about
>>< the encoded media - for example, for audio, it should contain sample
>>< rate and number of channels.  By convention, the first bytes of the
>>< bos page contain magic data that uniquely identify the required
>>< codec.  It is the responsibility of anyone fielding a new codec to
>>< make sure it is possible to reliably distinguish his/her codec from
>>< all other codecs in use.  There is no fixed way to detect the end of
>>< the codec-identifying marker.  The format of the bos page is
>>< dependent on the codec and therefore MUST be given in the
>>< encapsulation specification of that logical bitstream type.  An
>>< example for such a media mapping is "Ogg Vorbis", which provides the
>>< name and revision of the Vorbis codec, the audio rate and the audio
>>< quality on the Ogg Vorbis bos page.  It is identified by the string
>>< "vorbis" at the beginning of the bos.
> 
> 
> Paragraph is generally good, but the example at the end is slightly wrong. 
> The first packet of a vorbis bitstream starts with the byte 0x01, followed by 
> "vorbis" (a total of 7 bytes of identifier).
> 
> The rest of this looks really good - thanks a lot for doing all this.
> 
> Mike
> 
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