QSGVideoNode for imx6 does not work!?

Document created by Allen Wang on Jul 3, 2014Last modified by Allen Wang on Sep 8, 2015
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When I use QMediaPlayer (Qt5.1.1) to play a FHD video, the CPU (imx6dl) usage turns very high and the output is not fluid and also has some frame drop.

I found a patch that claims to solve this problem (links below are taking about the same thing) :

adding zero-copy-QSGVideoNode for imx6 - Qt by Digia


After patch appliance and recompilation of Qt Library and program rebuild, the performance issue remains the same.

Does anybody know how to enable this property correctly? Have I missed some points or mandatory steps?

Any comment will be appreciated, thanks!