[gst-devel] long pauses during rtsp playback

[Doug Crawford]

I worked out all of the problems with displaying the video on my Ubuntu
machine.  I had to change the sink from xvimagesink to ffmpegcolorspace !
ximagesink.  Now, if I set the latency=100 on the rtspsrc and set sync=true
on ximagesink the video is stable with low lag.  If I set sync=false the
video has no perceptible lag.  So I am conviced that my AXIS RTSP video
source is good and I am back to my original problem of figuring out how to
display the video on my OMAP3EVM board.

I tried this pipeline "gst-launch --gst-debug-level=2 rtspsrc
location=rtsp://10.5.5.33/mpeg4/media.amp ! queue ! rtpmp4vdepay ! TIViddec2
codecName=mpeg4dec engineName=codecServer ! TIDmaiVideoSink videoStd=VGA
videoOutput=LCD rotation=90 sync=false" with export
GST_DEBUG=TIDmaiVideoSink:5.  The first warning I see is:

0:00:00.361450194  1628    0x54048 WARN         rtpjitterbuffer
rtpjitterbuffer.c:198:calculate_skew: Clock rate changed from 4294967295 to
90000

Then the console output pauses for about 20 seconds and then I see bursts of
the folllowing log messages from TIDmaiVideoSink:

0:00:22.691528319  1628   0x1041b0 LOG          TIDmaiVideoSink
gsttidmaivideosink.c:1854:gst_tidmaivideosink_render: render  ******* <
(168960 bytes, timestamp: 0:00:00.000000000, duration: 0:00:00.033366666,
offset: -1, offset_end: -1, flags: 0) 0x100808

I see about 16 of these log messages that are almost identical.  Then  a 4
second pause, then another burst of about 16 of these log messages.

Doug


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