<div>Sometimes, a TCP H264 video stream to some IP cameras cannot be stablished.</div><div>This problematic behaviour happens only with 2 out of the 5 cameras we have tried.</div><div>I cannot reproduce the buggy behaviour from other client like VLC (</div>
<div><br></div><div> == Client system information:</div><div>$ cat /etc/issue</div><div>Ubuntu 11.10 \n \l</div><div>$ uname -a</div><div>Linux dubai 3.0.0-16-generic-pae #29-Ubuntu SMP Tue Feb 14 13:56:31 UTC 2012 i686 i686 i386 GNU/Linux</div>
<div>$ gst-launch-0.10 --version</div><div>gst-launch-0.10 version 0.10.35</div><div>GStreamer 0.10.35</div><div><a href="https://launchpad.net/distros/ubuntu/+source/gstreamer0.10">https://launchpad.net/distros/ubuntu/+source/gstreamer0.10</a></div>
<div><br></div><div> == Steps to reproduce bug:</div><div>1) Run these commands:</div><div>$ export GST_DEBUG="*:2"</div><div>$ while true; do gst-launch rtspsrc location="rtsp://<a href="http://user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264">user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264</a>" protocols="tcp" ! decodebin ! ffmpegcolorspace ! xvimagesink; done</div>
<div>2) Ctrl+C each time you get a working video stream, let it loop and try to get a new stream again.</div><div>3) About 10-15% of the times it will fail to show any video. Console will show this output:</div><div>Setting pipeline to PAUSED ...</div>
<div>Pipeline is live and does not need PREROLL ...</div><div>Setting pipeline to PLAYING ...</div><div>0:00:00.399456836 29193 0x9df6050 WARN bin gstbin.c:2384:gst_bin_do_latency_func:<pipeline0> failed to query latency</div>
<div>New clock: GstSystemClock</div><div>0:00:00.696638170 29193 0x9f7beb0 WARN rtspsrc gstrtspsrc.c:4025:gst_rtspsrc_loop:<rtspsrc0> error: Internal data flow error.</div><div>0:00:00.696708832 29193 0x9f7beb0 WARN rtspsrc gstrtspsrc.c:4025:gst_rtspsrc_loop:<rtspsrc0> error: streaming task paused, reason not-linked (-1)</div>
<div>ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0: Internal data flow error.</div><div>Additional debug info:</div><div>gstrtspsrc.c(4025): gst_rtspsrc_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0:</div>
<div>streaming task paused, reason not-linked (-1)</div><div>Execution ended after 122707578 ns</div><div><br></div><div><br></div><div> == Additional information:</div><div>The "failed to query latency" debug message seems to be normal? It happens with all tested cameras. However the "internal data flow error" and "streaming task paused" messages are not normal.</div>
<div><br></div><div>A faster way to make the stream fail, is to stablish not 1, but 2 or more simultaneous streams (and of course, disregarding any 503 errors that may appear due to camera rejecting additional connections, which can be reasonable to expect), like this:</div>
<div>$ while true; do gst-launch rtspsrc location="rtsp://<a href="http://user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264">user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264</a>" protocols="tcp" ! decodebin ! ffmpegcolorspace ! xvimagesink rtspsrc location="rtsp://<a href="http://user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264">user:password@192.168.3.206/axis-media/media.amp?resolution=640x480&fps=10&videocodec=h264</a>" protocols="tcp" ! decodebin ! ffmpegcolorspace ! xvimagesink; done</div>
<div><br></div><div><br></div><div><br></div><div>Please let me know if you need more information.</div><div><br></div>-- <br>Saludos,<br> Bruno González<br><br>_______________________________________________<br>Jabber: stenyak AT <a href="http://gmail.com" target="_blank">gmail.com</a><br>
<a href="http://www.stenyak.com" target="_blank">http://www.stenyak.com</a><br>