Il 06/07/2016 18:19, Jason H ha scritto:
What others have not said: I did extensive testing of Qt Quick1 with video playback.
This is a chapter on its own. (By the way, Qt Quick 1 is still widget-based...)
In case of video playback, there's much more going on than using the GPU for displaying the video. You want to use the GPU also to decode the video stream (using whatever native APIs you have on your system) and, in order to display it, it's not guaranteed at all the using OpenGL is actually the best way.
Other overlaying solutions are usually much, much better performance-wise (e.g. VDPAU). But: they don't allow you to embed the video in arbitrary UI hierarchies. Media players usually have very complex setups in order to be able to switch between presentation backends when f.i. you set a videoplayer full screen rather than windowed.
Cheers, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908 KDAB - The Qt Experts
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