[Interest] Bad playback of RTSP streams on imx6 platform [Qt5.3]
Michael
auslands-kv at gmx.de
Sat Apr 19 10:02:41 CEST 2014
Hi
I'm using QT5.3 from git on an imx6 board. Multimedia playback
performance has greatly improved with this commit
(https://codereview.qt-project.org/#change,76764). Performance of video
playback is typically pretty much on par with a native gstreamer pipe.
However, this does not apply to RTSP streams. While the following
gstreamer pipe plays (nearly) perfectly on the commandline:
gst-launch rtspsrc location=rtsp://axis-cam1/axis-media/media.amp !
decodebin2 ! mfw_v4lsink sync=false
Playing the same with Qt5 qml MediaPlayer drops lots of frames (about
90% or more), although CPU usage is very low < 10%.
Warning: "A lot of buffers are being dropped."
Warning: "A lot of buffers are being dropped."
Warning: "A lot of buffers are being dropped."
Also, playback takes up to 5 seconds to start, whereas the cmdline
nearly start immediately.
I can get a similar, although not as bad, experience when using
sync=true on the mfw_v4lsink element. Not sure though, if this is relevant.
Anybody knows how best to debug or even to solve this problem?
Thanks
Michael
<https://codereview.qt-project.org/#change,76764>
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