Can's get HD video to play smoothly on IBM R50 Laptop
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You cannot use the proprietary driver with that card. Unfortunately, that card is rather old and, depending on the CPU you are using, HD video playback may just be beyond the capabilities of your laptop. Do you know the speed of your CPU? What is the output of 'xvinfo'?
That may be true, but why does xorg show high cpu usage when those videos are playing, about 25% of the cpu usage is xorg doing something and the video player doing the rest. So it seems like something is not setup properly, cause shouldn't xorg not be running such high during video playback if drivers and whatnot are configured properly?
If my video player was at like 95% then i'd understand. But it's at 75% or so and the video is very close to being decent to watch. You get half second spurts where the motion is normal, then 1-2 second pauses.
mplayer processes the video, Xorg displays it. It's not surprising that both would have moderate to high CPU usage.
EDIT: The only other thing I can recommend is checking if the video player you are using is using Xv or simply using a software rendering device. I don't know enough about MythTV to find this out, though. You could always check to see if you get the high CPU usage if you play back the video with 'mplayer -vo xv' from a terminal.
Video is sweet in mplayer now, and HD video in mythtv works much much better (not 100% perfectly, but totally watchable) since i changed the decoder from standard to xvmc. What's strange is that it's not 100% smooth on high action scenes, but the cpu no longer uses 100%, it's only getting used around 80% total. Oh well. I'm more than happy with it.