Graham Evans schreef: > mark stavar wrote: >> I am getting the same results -- my playback is faster and smoother >> with X11-Xv than with OpenGL. Now mine is probably not a hig-end >> graphics card (and a little dated now) but it supports OpenGL 2.0. A >> tad disappointing :-( >> > Hi mark > > Like Bruce you probably have a problem of some sort. I just tried out > the open gl video driver (Preferences>Video Out>Video Driver>OpenGL) > and got 30 fps for the following effects chain playing in Open GL: > camera z enlarge 2.2 (bicubic, gamma (no auto no histrogram), rgd and > chromakey hsv) > I think there is something odd in the OpenGL implementation. try this: Have two videotracks. In the bottom one there is video. On the top track there is a small piece of video like in this example: http://www.raldee.net/cinelerra.png
Now play this. At the point where the first track has information, the framerate drops from 25 to 7fps with OpenGL. With the X11-XV driver, performance is 25fps all the way. Now the same applies to a simple dissolve in one track. Framerate drops with OpenGL driver as well whereas the X11-XV driver has a constant framerate of 25. However, when I add an effect (like chromakey) to a single video timeline (not the example above), the performance of the OpenGL driver is much better (25fps) than X11-XV (11fps). My Card is a Gforce 7800 with the latest NVidia drivers. grtz Harm _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
