Re: [Live-devel] RTCP and synchronization

2007-07-12 Thread Ross Finlayson
>Ok, but I still don't get how the final recipient gets to know the >*original* presentation time (which correspond to audio) if I generate a >new one in the transcoder... Each incoming frame (from your "RTPSource" object) has an accurate presentation time, which you know (because it's passed as

Re: [Live-devel] RTCP and synchronization

2007-07-11 Thread Julian Lamberty
Ok, but I still don't get how the final recipient gets to know the *original* presentation time (which correspond to audio) if I generate a new one in the transcoder... Is this done via RTCP?! If yes, could you shortly explain it, please? Julian ___ liv

Re: [Live-devel] RTCP and synchronization

2007-07-11 Thread Ross Finlayson
> > Because they're not useful to you. >> >> I'll say this yet again (and hopefully for the last time): Our >> RTP/RTCP implementation automatically computes synchronized >> presentation times using RTP timestamps and RTCP reports. Code that >> receives a RTP stream (using our library) should

Re: [Live-devel] RTCP and synchronization

2007-07-11 Thread Julian Lamberty
> Because they're not useful to you. > > I'll say this yet again (and hopefully for the last time): Our > RTP/RTCP implementation automatically computes synchronized > presentation times using RTP timestamps and RTCP reports. Code that > receives a RTP stream (using our library) should never h

Re: [Live-devel] RTCP and synchronization

2007-07-04 Thread Ross Finlayson
>As RTCP SR packets carry NTP ans RTP timestamps I would like to know how >they are used to sync to streams. As described in RFC 3550. > I found out that the RTP timestamp in >the RTCP SR corresponds to the timevalue which the NTP timestamp indicates. > >But why can't I find the RTP timestamp i

[Live-devel] RTCP and synchronization

2007-07-04 Thread Julian Lamberty
Hi! As RTCP SR packets carry NTP ans RTP timestamps I would like to know how they are used to sync to streams. I found out that the RTP timestamp in the RTCP SR corresponds to the timevalue which the NTP timestamp indicates. But why can't I find the RTP timestamp in the packets of my videostrea