RE: [AVT] RTP streaming and adaptation to AVC of an SVC temporalscalable bitstream - Packet loss
<Ye-Kui.Wang@nokia.com> Sat, 18 August 2007 21:59 UTC
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Subject: RE: [AVT] RTP streaming and adaptation to AVC of an SVC temporalscalable bitstream - Packet loss
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From: Ye-Kui.Wang@nokia.com
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Hi Colin, Thanks for your clarification. But according to the following sentence copied from Daniele's email, "... then the SVCtoAVC adapter doesn't know whether this loss has to be signaled to the receiver, i.e. whether it must insert a sequence number gap in the outcoming RTP stream...", the SVCtoAVC adapter uses a different RTP sequence number value space for the outcoming RTP steam than the incoming RTP stream. Is this what a translator can do? It is not clear how the SVCtoAVC adapter handles the CC, SSRC and CSRC fields and RTCP traffic, though. BR, YK >-----Original Message----- >From: ext Colin Perkins [mailto:csp@csperkins.org] >Sent: Saturday, August 18, 2007 9:07 PM >To: Wang Ye-Kui (Nokia-NRC/Tampere) >Cc: daniele@bsoft.info; avt@ietf.org >Subject: Re: [AVT] RTP streaming and adaptation to AVC of an >SVC temporalscalable bitstream - Packet loss > >On 18 Aug 2007, at 18:36, <Ye-Kui.Wang@nokia.com> wrote: >> In your example the SVCtoAVC adapter is an RTP mixer, which >terminates >> the RTP session between the sender and itself and restarts >another RTP >> session between itself and the receiver. >> Therefore the RTP sequence number needs to be updated for the base >> layer packets anyway. > >If the SVCtoAVC adapter is a transcoder from an SVC stream to >an AVC stream, it will be an RTP translator, not an RTP mixer. >Neither an RTP translator or a RTP mixer terminate the RTP >session. RFC 3550 and draft-ietf-avt-topologies-06.txt discuss >this in more detail. > >-- >Colin Perkins >http://csperkins.org/ > > > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt
- [AVT] RTP streaming and adaptation to AVC of an S… daniele renzi (bsoft)
- RE: [AVT] RTP streaming and adaptation to AVC of … Thomas Schierl
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … Colin Perkins
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- RE: [AVT] RTP streaming and adaptation to AVC of … Ye-Kui.Wang
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- Re: [AVT] RTP streaming and adaptation to AVC of … Thomas Wiegand
- Re: [AVT] RTP streaming and adaptation to AVC of … daniele renzi (bsoft)
- [AVT] Interop issue with H263-1998 Franceschini Guido
- RE: [AVT] Interop issue with H263-1998 Gary Sullivan
- Re: [AVT] Interop issue with H263-1998 Randell Jesup
- Re: [AVT] Interop issue with H263-1998 Colin Perkins
- Re: [AVT] Interop issue with H263-1998 Randell Jesup
- RE: [AVT] Interop issue with H263-1998 Even, Roni
- Re: [AVT] Interop issue with H263-1998 Randell Jesup
- RE: [AVT] Interop issue with H263-1998 Even, Roni
- RE: [AVT] Interop issue with H263-1998 Franceschini Guido
- RE: [AVT] Interop issue with H263-1998 Even, Roni
- RE: [AVT] Interop issue with H263-1998 Franceschini Guido
- RE: [AVT] Interop issue with H263-1998 Even, Roni
- RE: [AVT] Interop issue with H263-1998 Franceschini Guido