> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Thomas > W. Shelton > Sent: Wednesday, January 18, 2006 1:02 PM > To: Discussion about mythtv > Subject: Re: [mythtv-users] Video Stutter Problems > > > -----Original Message----- > > From: Jerry Rubinow [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, January 18, 2006 12:54 PM > > To: Thomas W. Shelton > > Subject: Re: [mythtv-users] Video Stutter Problems > > > > On 1/18/06, Thomas W. Shelton <[EMAIL PROTECTED]> wrote: > > > > > > Hello, > > > > > > I have scoured the list and the Internet and discovered a > > lot of good > > > information ... none of which has corrected my problem. > > > > > > I'm running on > > > > > > - Dell 2.4GHz/512M ram > > > - pcHDTV 3000 Card > > > - nVidia GeForce FX 5200 > > > - using NTSC with cable -- no cable box. > > > - Have Video for Linux card specified -- not the > > pcHDTV(wanted to get > > > > > the basics working first) > > > > > > using the latest stable branch from SVN compiled with > --enable-Xvmc. > > > I have "v4l" defined in my xorg.conf file. I also have > Xvmc defined > > in the setup. > > > I believe I have also turned off all commercial flagging. > > (specifics > > > of which settings to check might help). The processor > also spikes > > > when I run glxgears ... not sure if that means anything. > > > > > > When I started the image quality was terrible. I have > been able to > > > significantly improve the quality but it still stutters. I > > ran "top" > > > and both mythbackend and mythfrontend are consuming all available > > > resources when watching TV. > > > > > > I feel like I'm making improvements but have run into a wall. > > > > > > Any thoughts? > > > > > For the backend, dumb question - is dma enabled on the disk(s)? > > > > > > For the frontend, I had to recompile with processor specific > > > optimizations before I got reasonable CPU usage. > > > > > > YMMV. > > > > > > -Jerry > > > > On 1/18/06, Thomas W. Shelton <[EMAIL PROTECTED]> wrote: > > > Yes DMA is enable ... I was getting writes of about > 50m/sec when I > > > tested. > > > > > > I'll disable OpenGL and recompile with some optimizations. I'm > > > running Kubuntu ... Any thoughts on where to find optimizations ? > > > > > > Thanks for the help ... > > > > Try adding --enable-proc-opt to ./configure. > > > > > OK ... I did that orinally ... I'll keep at it and let you > know if the OpenGL removal helps.
Cool. I removed the OpenGL vsync and now the video does not stutter and the CPU utilization has dropped to around 30% for the frontend and 30-40% for the backend. Should it be this high? However, now when I attempt to change channels, the frontend locks up and the backend seg faults. I'm at a loss here. Thomas _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users