search for: videorend

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2010 Jun 23
1
Video call with QQ or any messenger
...happens, no video rendering at all, but when I DONOT 'use clock', video rendering works fine. Then I read the source code and find out one problem(maybe right, maybe wrong), when wine/dlls/qcap/v4l.c send media samples to downstream filters, it do not set any timestamp on it. Thus if I use VideoRenderer as I did in GraphEdt, the video render got wrong start and stop reference time for media sample, and then the synchronisation result will be very strange. So I modify the v4l.c and set proper timestamp on media sample. Good result, even when I 'use clock', the capture+render graph works...