Re: [AVT] Re: New I-Ds for Ogg technologies (Vorbis over RTP, Oggfile format, Mimetypes)

[Phil Kerr <philkerr@elec.gla.ac.uk>]

Colin,

Thanks for the feedback.

Yes, the initial set of codebooks could be sent using SDP and I'll
investigate this further.  I'll update the draft to highlight this
change together with your suggestions concerning congestion control and
reliability.

Vorbis audio is part of a wider suite of media formats and there are two
video components in development, Theora and Tarkin.  Theora will
probably be the first to reach release-grade and there are discussions
ongoing regarding the appropriate I-Ds to support it.

Regards

Phil

On Tue, 2003-01-14 at 00:54, Colin Perkins wrote:
> Phil,
> 
> This seems like a reasonable plan for completing the drafts. A couple of
> comments below.
> 
> --> Phil Kerr writes:
> >Thanks Colin,
> >
> >The two new I-Ds (Vorbis RTP and its MIME type) are to be merged into one
> >document, with the MIME type changing to audio/vorbis.
> >
> >The next changes to the combined I-D will be to add a missing setup block to the
> >codebook RTCP message and to add a field to indicate the seq id of the RTP
> >stream when the new codebook should be applied for decoding.
> 
> Presumably, an initial codebook can be sent as part of the SDP signalling?
> 
> >A new RTCP APP message to cater for stream metadata is also under development.
> >
> >An I-D to cover TCP over RTP was discussed last month and this is of interest to
> >the Vorbis RTP draft as it offers a reliable delivery mechanism for the
> >codebooks, which are critical for stream decoding.  I think it would be good to
> >review the code book delivery once this new I-D is available, so section 4 may
> >be subject to a substantial review. 
> 
> Yes, definitely. The draft should also discuss the congestion control and
> reliability requirements for transmission of codebooks. 
> 
> Also, is there an associated video codec? 
> 
> Colin
> _______________________________________________
> Audio/Video Transport Working Group
> avt@ietf.org
> https://www1.ietf.org/mailman/listinfo/avt


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