On 03/01/2013 08:07 AM, Xiang, Haihao wrote:
On Mon, 2013-02-25 at 20:02 +0100, Lutz Sammer wrote:
Hello,
I wrote a video player for VA-API.
It works fine with TV-stations in mpeg 576i and h264 720p.
Only stations with H264 1080i and H264 576i have the problem.
I think it is important that it is H264 and interlaced.
The problem is that vaPutSurface doesn't wait on v-sync.
When I run putsurface (from the libva tools/examples) on the same X11,
it shows 62.75 FPS.
VA doesn't handle vsync. Instead, it is the responsibility of display
server (such as X11, Wayland).
What does this mean?
vaPutSurface does wait on v-sync!
All examples and other code I have read didn't include any v-sync code.
What should I expect?
vaPutSurface (X11) waits on v-sync?
vaPutSurface (X11) didn't wait on v-sync?
vaPutSurface (X11) v-sync behaviour is undefined?
Johns
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