RTP handling and clock-rates

Jon Mandrell Jon.Mandrell at zii.aero
Thu Apr 14 17:20:44 UTC 2016

I am using gstreamer 1.2 (the same thing happens with 1.6). I am attempting to tune to an RTP stream provided by an external device, and I'm using the following pipeline as a test:

GST_DEBUG=*:2 gst-launch-1.0 -v udpsrc multicast-iface=eth2 buffer-size=8000000 do-timestamp=true uri=udp:// ! application/x-rtp,media=video,clock-rate=90000 ! rtpbin ! fakesink silent=false

I do see packets coming out of the fakesink, but I'm also getting the following message logged between every packet:

0:00:00.328454488 12399  0x84aa260 WARN               rtpsource rtpsource.c:994:calculate_jitter: cannot get clock-rate for pt 33

How do I let it know the clock-rate? I had hoped providing the capsfilter would handle that.?

Jon Mandrell
Software Manager
Zodiac Inflight Innovations
jon.mandrell at zii.aero

11747 NE 1st, Suite 210
Bellevue, WA 98005 USA
P: 206-641-7184 | M: 206-999-1774


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