RE: [mythtv-users] Choppy video, mythfrontend eating cpu

Rick van der Mieden Mon, 26 Dec 2005 14:25:33 -0800

Vincent,

I did have almost the same problem. It's in the nvidia driver. The latest version is eating your cpu. Just un-install in and emerge the stable one from gentoo. This fixed it for me.

* media-video/nvidia-glx
      Latest version available: 1.0.6629-r6
      Latest version installed: 1.0.6629-r6
      Size of downloaded files: 16,116 kB
      Homepage:    http://www.nvidia.com/
      Description: NVIDIA X11 driver and GLX libraries
      License:     NVIDIA

* media-video/nvidia-kernel
      Latest version available: 1.0.6629-r4
      Latest version installed: 1.0.6629-r4
      Size of downloaded files: 16,116 kB
      Homepage:    http://www.nvidia.com/
      Description: Linux kernel module for the NVIDIA X11 driver
      License:     NVIDIA

Regards

Rick

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Berger
Sent: maandag 26 december 2005 21:30
To: [email protected]
Subject: [mythtv-users] Choppy video, mythfrontend eating cpu

I'm building my first myth box. I've got most of the stuff working but I have this lingering problem for which I'd appreciate some help.

Video playback is choppy, with lots of "prebuffering pauses". The CPU is pegged at 100%, all of it on mythfrontend according to top. It's the same whether I play live tv or a recording. If I play with mplayer instead (either live on /dev/video0 or a recording made by myth), it's all smooth with the CPU at < 10%, big difference ! Searching the archives, I found references to possible sound problems, but I don't think that's the case here, I've tried to cripple my sound artificially by pointing mythfrontend to an alsa device that doesn't exist (and saying OK to continue with no sound), and the problem remains, choppy video, high cpu (and no sound of course).

This is on an up-to-date gentoo, amd64 (Athlon 64 3000), 512MB, sata drive, PVR-150, video output to a CRT TV through S-Video on a cheap nVidia card. Latest nVidia driver (81.78), gentoo ebuild for mythtv (0.18.1-r1 ).

Any clue where to look ?
Thanks
Vincent

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