fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
sending REPORT
fTimestampBase: 0xae0daf0d, tv: 683383.099932, RTP timestamp: 101919
Creating RTCP SR packet, SSRC is 0x6da5, NTP is : tv: 683383.099932,
TimeStamp is: 101919
sending RTCP packet
80c80006 00006da5 83b4ebf7 199524c0 00018e1f 000000db 0003c76d
81ca0005 00006da5 010a7377 6f70742d 766f6970 00000000
schedule(1.015347->683384.121916)
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.201906, RTP timestamp: 21097
fTimestampBase: 0xae0daf0d, tv: 683382.235273, RTP timestamp: 24100
fTimestampBase: 0xae0daf0d, tv: 683382.235273, RTP timestamp: 24100
Obviously the TimeStamp value of the RTCP SR packet should be
between 21097 and 24100.
No - because the 'NTP' time (683383.099932) that's used for the RTCP
SR packet is not between 683382.201906 and 683382.235273. The RTP
timestamp of 101919 corresponds to the time 683383.099932.
It's perfectly OK for the NTP time that's used in a RTCP "SR" report
to differ from the presentation time used in RTP packets that bracket
it. However, because the RTCP SR 'NTP' time is computed using
"gettimeofday()" (i.e., 'wall clock' time), the presentation times
for your media samples (that get passed to RTP) *must* also be
aligned with 'wall clock' time.
The timestamp generation code (for both RTP and RTCP) is correct.
However, for it to work correctly, you must feed it correct
presentation times.
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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