I think vdpau seems to be the right setting. I also have an Intel processor and an Nvidia graphics card. With vdpau I get the best results. The CPU is hardly used, but the FPS is almost always at maximum. Especially when I switch to X11-OpenGL, I only have 12% CPU load left. Subjectively I have the impression it plays a bit more smoothly. I notice the clearest difference at the fan of the computer. It is hardly noticeable with the hardware acceleration. Without hardware acceleration I get earache because the CPU fan gets extremely loud. Thanks to Andrea for the tip with libva-vdpau post-installation, that's how I got it to work.

Here are my tests:

X11

CIN_HW_DEV=off ./cin       -> CPU 58%
CIN_HW_DEV=vdpau ./cin -> CPU 32%
CIN_HW_DEV=vaapi ./cin  -> CPU 82%

X11-OpenGL

CIN_HW_DEV=off ./cin       -> CPU 48%
CIN_HW_DEV=vdpau ./cin -> CPU 12% :-)
CIN_HW_DEV=vaapi ./cin  -> CPU 80%

Sam




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