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Re: [AVT] alignment of layers issue
On 19 Nov 2008, at 16:26, Thomas Schierl wrote:
...
I think we cannot change the RTP stack implemenation here, that has
to be the same for all implementations including RTCP for deriving
NTP timestamps. But we may give a guideline on the RTP timestamp
generation for layered codecs used with session multiplexing, which
may be used to "improve" the data alignment process or may make it
a little bit easier for some implementations. RTCP with NTP stays
and is mandatory to be used, however an layered receiver may also
rely on the fact the RTP timestamps are aligned in the different
sessions in this particular case.
Could that be a way to go forward?
So, your "improvement" is that layered decoders should ignore the
RTCP SR information, and assume the timestamps are aligned, but you'd
send the SR data anyway? Sorry, no, that's just another way of saying
you don't want to implement RTCP.
Guidelines on how to generate SR packets with correct timestamps, sure.
--
Colin Perkins
http://csperkins.org/
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