[Live-devel] presentation times

[Ross Finlayson]

>I am receiving a stream from Quicktime Broadcaster via Darwin 
>Streaming Server, where do the presentation times I get in my
>MediaSink originate from?

I think you mean "RTPSource" (subclass), not "MediaSink".

The presentation times returned by the "RTPSource" object originated 
in the server (provided that you have a "RTCPInstance" associated 
with the "RTPSource".  See 
http://www.live555.com/liveMedia/faq.html#separate-rtp-streams


>My guess is that DSS adapts the presentation times of frames from
>QTB. I am asking this because I would like to be able to calculate 
>the latency between sending from QTB and receiving in Live555, is
>this made impossible by relaying via DSS?

I don't know; you will have to ask a DSS mailing list about that.  In 
any case, even if the QTB presentation timestamps were passed through 
the DSS unchanged, you would only be able to calculate the latency 
accurately if the receiver's clock were synchronized with that of the 
QTB.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/