[MPlayer-dev-eng] N fps and N Hz screen refresh rate (the vblank problem)

Uoti Urpala uoti.urpala at pp1.inet.fi
Wed Jan 7 00:43:36 CET 2009

On Sun, 2009-01-04 at 22:42 +0100, Pallai Roland wrote:
> The final solution is the gl swapinterval with -framedrop, that works
> well if framerate and refresh rate are equal and I don't use an ATI
> card: the fglrx painfully slow, the Xorg's radeon driver suffers from
> tearing.

Normal framedrop isn't meant to give exact timing. It'll never drop
frames unless desync exceeds 100 ms. The dropping code also causes
problems with at least h264 (it depends on the codec and decoder because
the code tries to skip not only the display but also the decoding of a
frame, as usually required to recover if the desync happens because of
insufficient decoding speed).

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