[Interest] Chances of usable qtmultimedia on imx6?

[Christoph Kurz]

> Hi
>
>I am looking for a nice small device used mainly for a specialized
>digital signage solution. As software framework I would like to use Qt5,
>as I really love Qt5 :-)
>
>I had a recent look at the imx6 solutions available, and there are many
>devices out on the market at attractive price points. The power of the
>CPU and the GPU should be totally sufficient for the use case. So I
>tested Qt5 on it. The results are, however, pretty bad.
>
>While GL effects and shaders work nicely in Qt5.2.1, qtmultimedia is
>extremely inefficient. Here are some examples comparing gstreamer and Qt5:
>
>1. Playback of HD video (mpeg4):
>Gstreamer: < 10% CPU usage, perfect picture
>Qt5: 100% CPU usage, some frames are dropped, somewhat usable
>
>2. Playback of full HD (FHD) video (h264):
>Gstreamer: < 20% CPU usage, perfect picture
>Qt5: 100% CPU usage, 90% of frames are dropped, unusable
>
>3. Playback of rtsp webcam stream (640x480, h264):
>Gstreamer: < 5% CPU usage, nearly perfect pictures
>Qt5: 5-10% CPU usage (!), but >90% of frames are dropped, unusable
>
>Gstreamer shows that the imx6 is perfectly capable of playing these
>streams. Also, XBMC runs perfectly on it. So. it definitely seems to be
>a matter of Qt integration with the imx6 platform that is severely
>lacking.
>
>I am just wondering if there is a chance that Qtmultimedia will be
>better integrated into the imx6 platform in the (near) future, or if I
>should better look for a different platform (e.g. bay trail?) ?
>
>Thanks for any comments
>
>Michael

Have you tried Qt5.3? It should work there:
https://codereview.qt-project.org/#change,76764
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