RSTP videos freezing when combining several together

[Nick Kallen]

Hi,

I’m new to gstreamer and I’ve working on mosaic functionality. When I mix together several RTSP streams that are backed by a file, the process freezes most of the time and crashes (or terminates prematurely) sometimes. (When I use live RTSP streams (e.g., coming from an iPhone camera), it never seems to freeze or crash. Similarly, if I’m only combining 2 or 3 streams it seems fine). I’m running this command on os x, and this fails consistently for me:

gst-launch-1.0 compositor name=comp \
  sink_0::xpos=0 sink_0::ypos=0 \
  sink_1::xpos=320 sink_1::ypos=0 \
  sink_2::xpos=0 sink_2::ypos=240 \
  sink_3::xpos=320 sink_3::ypos=240 \
  sink_4::xpos=640 sink_4::ypos=0 \
  sink_5::xpos=640 sink_5::ypos=240 ! autovideosink uridecodebin \
uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_0 \
uridecodebin uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_1 \
uridecodebin uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_2 \
uridecodebin uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_3 uridecodebin \
uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_4 \
uridecodebin uri='rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov' ! videoscale ! video/x-raw,width=320,height=240 ! comp.sink_5

Here is output with GST_DEBUG=4 when a freeze happens about 10 seconds in https://gist.github.com/nkallen/9523509067ab8ba4b9016153657b729d <https://gist.github.com/nkallen/9523509067ab8ba4b9016153657b729d>

Here is the output when it crashes:
https://gist.github.com/nkallen/8f90fcbec0ba005b7fd9c73122dad2f7 <https://gist.github.com/nkallen/8f90fcbec0ba005b7fd9c73122dad2f7>

I’ve installed everything through homebrew like this:

    brew install gstreamer
    brew install gst-plugins-base --with-opus
    brew install gst-plugins-good --with-libvpx
    brew install gst-plugins-bad --with-rtmpdump
    brew install gst-plugins-ugly --with-x264

I’m sorry if I’m doing something dumb! I appreciate any help!

Thanks!!
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