On Fri, Aug 28, 2009 at 2:27 PM, cedric baudoin <[email protected]>wrote:
> Dear all, > > 2009/8/27 Didier Barvaux <[email protected]> > >> Hi Josephine, >> >> > I'm trying to come up with an implementation, using the ROHC library, >> > that compresses only the RTP header, and not the UDP and IP headers. >> >> As far as I know, there is no defined profile for RTP-only compression. >> So you have to define the mechanisms and packet formats you want to >> use. The ones defined for IP/UDP/RTP are probably not adequate for your >> RTP-only profile. > > > True. Defining a RTP only profile will not allow to benefit from redundancy > between the different layers (only redundancy between RTP fields of the same > flow will be used) and thus will lead to a lower efficiency. What is your > use case ? > > best regards > > Cédric Baudoin > Research Department > Thales Alenia Space > > Hi Cedric, Thanks for the feedback. You're right, it'll certainly not be as bandwidth efficient as compression of multiple headers. It's one means though of going beyond hop-by-hop compression to achieve end-to-end compression; I'm looking at it partly from that angle.. Regards, Josephine
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