Re: [mythtv-users] More HD stuttering

2005-12-06 Thread Jean Connelly
My system seems to be a heck of a lot peppier since I neutered acpi with

acpi=ht pci=noacpi

as kernel boot options. I thought that I was supposed to have kacpid using 80% of my CPU...

Now my HDTV playback has regular pauses instead of continuous hiccups... woohoo.

-Jean
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Re: [mythtv-users] More HD stuttering

2005-12-02 Thread Chris Trown

Jean Connelly wrote:


Regarding:

  The system is a 3.06 GHz P4 running Fedora Core 3.  The video Card
is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've checked
that DMA is working on all the drives.  I built mythtv from stable
source, 0.18.1.  I used the following configure options:

--enable-xvmc --enable-opengl-vsync --enable-dvb
--dvb-path=/lib/modules/2.6.12- 1.1381_FC3smp/build/include
--disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt
--disable-xvmc-vld --enable-opengl-vsync


I have close to an identical system; and I have what is probably 
equivalent stuttering.  HDTV (live or recorded) is totally unplayable in 
myth.  I have tried with and without opengl sync.  I can't find the xvmc 
option in the gui with this myth version to disable xvmc for testing.  
Recorded 1080i plays badly (with frequent pauses and never with audio 
sync) in mplayer with xvmc and ffmpeg12mc and plays even worse without 
xvmc.  I'll try transcoding my latest sample clips to see if they are 
fine when played back at standard resolutions.


I've got
3.06 GHz P4 (which is a 533Mhz FSB chip)
512 MB Ram
BE7-RAID mobo
Nvidia 5200FX
Fedora Core 3

Night before last's myth svn.  No deinterlacing requested.
Prebuffer pauses all over the place.

I think what we really need is an hdtv playback test suite external to 
myth to get better benchmarks on actual system performance.  From 
previous posts to the list (well I got *my* P4 1.4Ghz system to 
playback hdtv) I think that my system *should* be able to playback hdtv 
without issue, but perhaps there are some motherboard weaknesses or such 
that make it impossible.




 After some tinkering, I found out what the problem was.  I think. 
 I was trying to play a 1080i stream on a 720p screen.  What I think 
was happening was that the 1080i stream could not be rendered using XVMC 
to 720p.  It had to me done in software, ie: the CPU.  When I changed 
the display to 1920x1080, XVMC kicked in and the image played nicely, so 
long as it was done by root.  No, I wasn't using xrandr.  I will when I 
get everything going under Core 4.


 This prompted my to upgrade to Core 4 so I can get realtime 
priority threads via PAM.  I don't really consider it an upgrade.  My 
experience is that Core 4 has more issues than Core 3.  Case in point, 
try compiling 18.1 stable with GCC4.  But I like the idea of running 
mythfrontend as root more distasteful than the problems.


Chris...

--
Those who would give up essential liberty to purchase a little
temporary safety deserve neither liberty nor safety -- Benjamin
Franklin
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Re: [mythtv-users] More HD stuttering

2005-12-02 Thread Todd Ignasiak
I display all my programs on a 1280x720p LCD panel, with my output
resolution set to 1280x720 @ 60fps.Both 1080i and 720p work just
fine.
In fact, 1080i is working better than 720p for me, because I get some
stuttering when the OSD is up with 720p when using XvMC.  Without
XvMC, playback is completely reliable with both 1080i and 720p, it
just takes more CPU power.

Scaling the video to the display resolution seems to be a pretty easy
job for the system.   I'm not sure what portion of that is done in
software/cpu versus what is done on the video card.  But, It is
certainly much less intense than scaling and recompressing the
MPEG2/MPEG4 video.


My System: Athlon64 3200+ 768MB RAM, NVidia FX5200, Nvidia drivers
7676, Gentoo X86-64, Linux kernel 2.6.14.   MythTV - latest SVN.





On 12/2/05, Chris Trown [EMAIL PROTECTED] wrote:
 Jean Connelly wrote:
 
  Regarding:
 
The system is a 3.06 GHz P4 running Fedora Core 3.  The video Card
  is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've checked
  that DMA is working on all the drives.  I built mythtv from stable
  source, 0.18.1.  I used the following configure options:
 
  --enable-xvmc --enable-opengl-vsync --enable-dvb
  --dvb-path=/lib/modules/2.6.12- 1.1381_FC3smp/build/include
  --disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt
  --disable-xvmc-vld --enable-opengl-vsync
 
 
  I have close to an identical system; and I have what is probably
  equivalent stuttering.  HDTV (live or recorded) is totally unplayable in
  myth.  I have tried with and without opengl sync.  I can't find the xvmc
  option in the gui with this myth version to disable xvmc for testing.
  Recorded 1080i plays badly (with frequent pauses and never with audio
  sync) in mplayer with xvmc and ffmpeg12mc and plays even worse without
  xvmc.  I'll try transcoding my latest sample clips to see if they are
  fine when played back at standard resolutions.
 
  I've got
  3.06 GHz P4 (which is a 533Mhz FSB chip)
  512 MB Ram
  BE7-RAID mobo
  Nvidia 5200FX
  Fedora Core 3
 
  Night before last's myth svn.  No deinterlacing requested.
  Prebuffer pauses all over the place.
 
  I think what we really need is an hdtv playback test suite external to
  myth to get better benchmarks on actual system performance.  From
  previous posts to the list (well I got *my* P4 1.4Ghz system to
  playback hdtv) I think that my system *should* be able to playback hdtv
  without issue, but perhaps there are some motherboard weaknesses or such
  that make it impossible.
 

   After some tinkering, I found out what the problem was.  I think.
   I was trying to play a 1080i stream on a 720p screen.  What I think
 was happening was that the 1080i stream could not be rendered using XVMC
 to 720p.  It had to me done in software, ie: the CPU.  When I changed
 the display to 1920x1080, XVMC kicked in and the image played nicely, so
 long as it was done by root.  No, I wasn't using xrandr.  I will when I
 get everything going under Core 4.

   This prompted my to upgrade to Core 4 so I can get realtime
 priority threads via PAM.  I don't really consider it an upgrade.  My
 experience is that Core 4 has more issues than Core 3.  Case in point,
 try compiling 18.1 stable with GCC4.  But I like the idea of running
 mythfrontend as root more distasteful than the problems.

 Chris...

 --
 Those who would give up essential liberty to purchase a little
 temporary safety deserve neither liberty nor safety -- Benjamin
 Franklin
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 mythtv-users@mythtv.org
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Re: [mythtv-users] More HD stuttering

2005-12-01 Thread Jean Connelly
Regarding:
 The system is a 3.06 GHz P4 running Fedora Core 3.The video Cardis a NVidia 5200FX.For capture, all I have is a HD3000.I've checked
that DMA is working on all the drives.I built mythtv from stablesource, 0.18.1.I used the following configure options:--enable-xvmc --enable-opengl-vsync --enable-dvb--dvb-path=/lib/modules/2.6.12-
1.1381_FC3smp/build/include--disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt--disable-xvmc-vld --enable-opengl-vsync
I have close to an identical system; and I have what is probably
equivalent stuttering. HDTV (live or recorded) is totally
unplayable in myth. I have tried with and without opengl
sync. I can't find the xvmc option in the gui with this myth
version to disable xvmc for testing. Recorded 1080i plays badly
(with frequent pauses and never with audio sync) in mplayer with xvmc
and ffmpeg12mc and plays even worse without xvmc. I'll try
transcoding my latest sample clips to see if they are fine when played
back at standard resolutions.

I've got 
3.06 GHz P4 (which is a 533Mhz FSB chip)
512 MB Ram
BE7-RAID mobo
Nvidia 5200FX
Fedora Core 3

Night before last's myth svn. No deinterlacing requested.
Prebuffer pauses all over the place.

I think what we really need is an hdtv playback test suite external to
myth to get better benchmarks on actual system performance. From
previous posts to the list (well I got *my* P4 1.4Ghz system to
playback hdtv) I think that my system *should* be able to playback
hdtv without issue, but perhaps there are some motherboard weaknesses
or such that make it impossible.

Very frustrating.
Thanks!
Jean
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Re: [mythtv-users] More HD stuttering

2005-12-01 Thread Curtis Stanford


On Dec 1, 2005, at 10:53 AM, Jean Connelly wrote:



Regarding:

  The system is a 3.06 GHz P4 running Fedora Core 3.  The video  
Card
is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've  
checked

that DMA is working on all the drives.  I built mythtv from stable
source, 0.18.1.  I used the following configure options:

--enable-xvmc --enable-opengl-vsync --enable-dvb
--dvb-path=/lib/modules/2.6.12- 1.1381_FC3smp/build/include
--disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt
--disable-xvmc-vld --enable-opengl-vsync

I have close to an identical system; and I have what is probably  
equivalent stuttering.  HDTV (live or recorded) is totally  
unplayable in myth.  I have tried with and without opengl sync.  I  
can't find the xvmc option in the gui with this myth version to  
disable xvmc for testing.  Recorded 1080i plays badly (with  
frequent pauses and never with audio sync) in mplayer with xvmc and  
ffmpeg12mc and plays even worse without xvmc.  I'll try transcoding  
my latest sample clips to see if they are fine when played back at  
standard resolutions.


I've got
3.06 GHz P4 (which is a 533Mhz FSB chip)
512 MB Ram
BE7-RAID mobo
Nvidia 5200FX
Fedora Core 3

Night before last's myth svn.  No deinterlacing requested.
Prebuffer pauses all over the place.

I think what we really need is an hdtv playback test suite external  
to myth to get better benchmarks on actual system performance.   
From previous posts to the list (well I got *my* P4 1.4Ghz system  
to playback hdtv) I think that my system *should* be able to  
playback hdtv without issue, but perhaps there are some motherboard  
weaknesses or such that make it impossible.


Very frustrating.
Thanks!
Jean


HD plays well on my 2.4GHz P4/5200FX without XVMC. XVMC doesn't work  
well with HD. I get stuttering with XVMC and HD. I am not using  
OpenGL sync. The option for XVMC is the first screen of the TV  
Settings-Playback menu (from memory...)


Curtis

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[mythtv-users] More HD stuttering

2005-11-23 Thread Chris Trown


 And combing, for that matter.

 I posted yesterday asking some questions.  I looked into the 
suggestions, but I don't think they apply.  I didn't supply enough info. 
   So, here we go.  As much detail as I know.  Hopefully, somebody can 
point me in the right direction.  I'm a bit at a loss as to where to go 
next.


 The system is a 3.06 GHz P4 running Fedora Core 3.  The video Card 
is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've checked 
that DMA is working on all the drives.  I built mythtv from stable 
source, 0.18.1.  I used the following configure options:


--enable-xvmc --enable-opengl-vsync --enable-dvb 
--dvb-path=/lib/modules/2.6.12-1.1381_FC3smp/build/include 
--disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt 
--disable-xvmc-vld --enable-opengl-vsync


 I'm getting stuttering and combing when playing HD.  The CPU is 
maxing out at 99% when playing.  The clips I am testing with are 
1080i(CSI).  I've tried using XvMC with BOB Deinterlacing filter.  I've 
also tried using libmpeg2 with the kernel and linear blend filter. 
Nothing seems to help and the CPU always goes through the roof.


 Here is the output from mythfrontend -v playback.  I have Use 
XvMC for playback checked and bobdeint filter selected.


2005-11-22 21:46:49.885 New DB connection, total: 1
Total desktop width=1280, height=720, numscreens=1
2005-11-22 21:46:49.891 Using screen 0, 1280x720 at 0,0
2005-11-22 21:46:49.895 mythfrontend version: 0.18.1.20050510-1 
www.mythtv.org

2005-11-22 21:46:49.896 Enabled verbose msgs : important general playback
2005-11-22 21:46:50.016 max_width: 1280 max_height: 720
2005-11-22 21:46:50.066 Switching to square mode (blue)
2005-11-22 21:46:50.630 Joystick disabled.
2005-11-22 21:46:50.688 Registering Internal as a media playback plugin.
2005-11-22 21:46:50.976 Connecting to backend server: localhost:6543 
(try 1 of 5)

2005-11-22 21:46:50.986 Using protocol version 15
2005-11-22 21:46:50.997 Starting media monitor.
2005-11-22 21:47:10.304 All Programs
2005-11-22 21:47:12.199 detectInterlace(Detect Scan, Detect Scan, 29.97, 
1088) -Interlaced Scan
2005-11-22 21:47:12.199 Interlaced: Interlaced Scan  video_height: 1088 
 fps: 29.97

2005-11-22 21:47:12.200 Estimated bitrate = 0
2005-11-22 21:47:12.431 Image size. dispxoff 0, dispyoff: 0, dispwoff: 
0, disphoff: 0

2005-11-22 21:47:12.431 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
2005-11-22 21:47:12.435 waiting for prebuffer...
2005-11-22 21:47:12.571 prebuffer wait timed out..
2005-11-22 21:47:12.571 waiting for prebuffer...
2005-11-22 21:47:12.719 prebuffer wait timed out..
2005-11-22 21:47:12.719 waiting for prebuffer...
2005-11-22 21:47:13.155 New DB connection, total: 2
2005-11-22 21:47:13.217 detectInterlace(Detect Scan, Detect Scan, 29.97, 
1088) -Interlaced Scan
2005-11-22 21:47:13.217 Interlaced: Interlaced Scan  video_height: 1088 
 fps: 29.97

2005-11-22 21:47:13.288 Estimated bitrate = 0
2005-11-22 21:47:13.296 Opening audio device '/dev/dsp'.
2005-11-22 21:47:13.297 Opening OSS audio device '/dev/dsp'.
2005-11-22 21:47:13.307 Over/underscan. V: 0, H: 0, XOff: 0, YOff: 0
2005-11-22 21:47:13.316 Using XV port 240
2005-11-22 21:47:13.321 Image size. dispxoff 0, dispyoff: 0, dispwoff: 
1280, disphoff: 720

2005-11-22 21:47:13.321 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
2005-11-22 21:47:13.931 Changing from None to WatchingPreRecorded
2005-11-22 21:47:13.933 Using deinterlace method bobdeint
2005-11-22 21:47:13.934 Using realtime priority.
2005-11-22 21:47:14.035 nVidiaVideoSync: VBlank ioctl did not work, 
unimplemented in this driver?
2005-11-22 21:47:14.035 DRMVideoSync: Could not open device 
/dev/dri/card0, No such file or directory

2005-11-22 21:47:14.036 Set video sync frame interval to 33366
2005-11-22 21:47:14.036 Using audio as timebase
2005-11-22 21:47:14.036 Video timing method: RTC
2005-11-22 21:47:14.036 Refresh rate: 16882, frame interval: 33366
2005-11-22 21:47:14.036 waiting for prebuffer...
2005-11-22 21:47:14.172 prebuffer wait timed out..
2005-11-22 21:47:14.172 waiting for prebuffer...
2005-11-22 21:47:14.857 waiting for prebuffer...
2005-11-22 21:47:14.992 prebuffer wait timed out..
2005-11-22 21:47:15.063 waiting for prebuffer...
2005-11-22 21:47:15.199 prebuffer wait timed out..
2005-11-22 21:47:15.270 waiting for prebuffer...
2005-11-22 21:47:15.406 prebuffer wait timed out..
2005-11-22 21:47:15.477 waiting for prebuffer...
2005-11-22 21:47:15.612 prebuffer wait timed out..
2005-11-22 21:47:15.683 waiting for prebuffer...
2005-11-22 21:47:15.819 prebuffer wait timed out..
2005-11-22 21:47:15.819 waiting for prebuffer...
2005-11-22 21:47:15.953 prebuffer wait timed out..
2005-11-22 21:47:15.954 waiting for prebuffer...
2005-11-22 21:47:17.801 prebuffering pause
2005-11-22 21:47:17.802 waiting for prebuffer...
2005-11-22 21:47:17.937 prebuffer wait timed out..
2005-11-22 21:47:17.937 waiting for prebuffer...
'video_output' mean = 

Re: [mythtv-users] More HD stuttering

2005-11-23 Thread Todd Ignasiak
I have been playing around with this a bit lately. I'm running in x86-64 mode, but the behavior may be similar. Also, I'm using the SVN from last night, 7996.- With OpenGL Sync 'ON', I get stuttering whenever XvMC is enabled. The Standard decoder works fine with OpenGL Sync, but not XvMC.
- With OpenGL Sync 'OFF', and XvMC 'ON'; 1080i playback works great. No stuttering at all.- With OpenGL Sync 'OFF' and XvMC 'ON'; 720p playback is great, until the OSD comes up. Then, my audio/video stutters until a second or two after the OSD goes away.
On 11/23/05, Chris Trown 
[EMAIL PROTECTED] wrote:And combing, for that matter.I posted yesterday asking some questions.I looked into the
suggestions, but I don't think they apply.I didn't supply enough info.So, here we go.As much detail as I know.Hopefully, somebody canpoint me in the right direction.I'm a bit at a loss as to where to go
next.The system is a 3.06 GHz P4 running Fedora Core 3.The video Cardis a NVidia 5200FX.For capture, all I have is a HD3000.I've checkedthat DMA is working on all the drives.I built mythtv from stable
source, 0.18.1.I used the following configure options:--enable-xvmc --enable-opengl-vsync --enable-dvb--dvb-path=/lib/modules/2.6.12-1.1381_FC3smp/build/include--disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt
--disable-xvmc-vld --enable-opengl-vsyncI'm getting stuttering and combing when playing HD.The CPU ismaxing out at 99% when playing.The clips I am testing with are1080i(CSI).I've tried using XvMC with BOB Deinterlacing filter.I've
also tried using libmpeg2 with the kernel and linear blend filter.Nothing seems to help and the CPU always goes through the roof.Here is the output from mythfrontend -v playback.I have Use
XvMC for playback checked and bobdeint filter selected.2005-11-22 21:46:49.885 New DB connection, total: 1Total desktop width=1280, height=720, numscreens=12005-11-22 21:46:49.891 Using screen 0, 1280x720 at 0,0
2005-11-22 21:46:49.895 mythfrontend version: 0.18.1.20050510-1www.mythtv.org2005-11-22 21:46:49.896 Enabled verbose msgs : important general playback
2005-11-22 21:46:50.016
 max_width: 1280 max_height: 7202005-11-22 21:46:50.066 Switching to square mode (blue)2005-11-22 21:46:50.630 Joystick disabled.2005-11-22 21:46:50.688 Registering Internal as a media playback plugin.2005-11-22 21:46:
50.976 Connecting to backend server: localhost:6543(try 1 of 5)2005-11-22 21:46:50.986 Using protocol version 152005-11-22 21:46:50.997 Starting media monitor.2005-11-22 21:47:10.304 All Programs2005-11-22 21:47:
12.199 detectInterlace(Detect Scan, Detect Scan, 29.97,1088) -Interlaced Scan2005-11-22 21:47:12.199 Interlaced: Interlaced Scanvideo_height: 1088fps: 29.972005-11-22 21:47:12.200 Estimated bitrate = 0
2005-11-22 21:47:12.431 Image size. dispxoff 0, dispyoff: 0, dispwoff:0, disphoff: 02005-11-22 21:47:12.431 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 10802005-11-22 21:47:12.435 waiting for prebuffer...
2005-11-22 21:47:12.571 prebuffer wait timed out..2005-11-22 21:47:12.571 waiting for prebuffer...2005-11-22 21:47:12.719 prebuffer wait timed out..2005-11-22 21:47:12.719 waiting for prebuffer...2005-11-22 21:47:
13.155 New DB connection, total: 22005-11-22 21:47:13.217 detectInterlace(Detect Scan, Detect Scan, 29.97,1088) -Interlaced Scan2005-11-22 21:47:13.217 Interlaced: Interlaced Scanvideo_height: 1088fps: 
29.972005-11-22 21:47:13.288 Estimated bitrate = 02005-11-22 21:47:13.296 Opening audio device '/dev/dsp'.2005-11-22 21:47:13.297 Opening OSS audio device '/dev/dsp'.2005-11-22 21:47:13.307 Over/underscan. V: 0, H: 0, XOff: 0, YOff: 0
2005-11-22 21:47:13.316 Using XV port 2402005-11-22 21:47:13.321 Image size. dispxoff 0, dispyoff: 0, dispwoff:1280, disphoff: 7202005-11-22 21:47:13.321 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
2005-11-22 21:47:13.931 Changing from None to WatchingPreRecorded2005-11-22 21:47:13.933 Using deinterlace method bobdeint2005-11-22 21:47:13.934 Using realtime priority.2005-11-22 21:47:14.035 nVidiaVideoSync: VBlank ioctl did not work,
unimplemented in this driver?2005-11-22 21:47:14.035 DRMVideoSync: Could not open device/dev/dri/card0, No such file or directory2005-11-22 21:47:14.036 Set video sync frame interval to 333662005-11-22 21:47:
14.036 Using audio as timebase2005-11-22 21:47:14.036 Video timing method: RTC2005-11-22 21:47:14.036 Refresh rate: 16882, frame interval: 333662005-11-22 21:47:14.036 waiting for prebuffer...2005-11-22 21:47:
14.172 prebuffer wait timed out..2005-11-22 21:47:14.172 waiting for prebuffer...2005-11-22 21:47:14.857 waiting for prebuffer...2005-11-22 21:47:14.992 prebuffer wait timed out..2005-11-22 21:47:15.063 waiting for prebuffer...
2005-11-22 21:47:15.199 prebuffer wait timed out..2005-11-22 21:47:15.270 waiting for prebuffer...2005-11-22 21:47:15.406 prebuffer wait timed out..2005-11-22 21:47:15.477 waiting for prebuffer...2005-11-22 21:47:
15.612 prebuffer wait timed out..2005-11-22 21:47:15.683 waiting for 

Re: [mythtv-users] More HD stuttering

2005-11-23 Thread Brandon Beattie
On Wed, Nov 23, 2005 at 11:20:27AM -0800, Chris Trown wrote:
 
  And combing, for that matter.
 
  I posted yesterday asking some questions.  I looked into the 
 suggestions, but I don't think they apply.  I didn't supply enough info. 
So, here we go.  As much detail as I know.  Hopefully, somebody can 
 point me in the right direction.  I'm a bit at a loss as to where to go 
 next.
 
  The system is a 3.06 GHz P4 running Fedora Core 3.  The video Card 
 is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've checked 
 that DMA is working on all the drives.  I built mythtv from stable 
 source, 0.18.1.  I used the following configure options:
 
 --enable-xvmc --enable-opengl-vsync --enable-dvb 
 --dvb-path=/lib/modules/2.6.12-1.1381_FC3smp/build/include 
 --disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt 
 --disable-xvmc-vld --enable-opengl-vsync
 

What does the backend log say?
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Re: [mythtv-users] More HD stuttering

2005-11-23 Thread Steve Adeff
On Wednesday 23 November 2005 14:20, Chris Trown wrote:
   And combing, for that matter.

   I posted yesterday asking some questions.  I looked into the
 suggestions, but I don't think they apply.  I didn't supply enough info.
 So, here we go.  As much detail as I know.  Hopefully, somebody can
 point me in the right direction.  I'm a bit at a loss as to where to go
 next.

   The system is a 3.06 GHz P4 running Fedora Core 3.  The video Card
 is a NVidia 5200FX.  For capture, all I have is a HD3000.  I've checked
 that DMA is working on all the drives.  I built mythtv from stable
 source, 0.18.1.  I used the following configure options:

 --enable-xvmc --enable-opengl-vsync --enable-dvb
 --dvb-path=/lib/modules/2.6.12-1.1381_FC3smp/build/include
 --disable-firewire --disable-joystick --disable-ivtv --enable-proc-opt
 --disable-xvmc-vld --enable-opengl-vsync

   I'm getting stuttering and combing when playing HD.  The CPU is
 maxing out at 99% when playing.  The clips I am testing with are
 1080i(CSI).  I've tried using XvMC with BOB Deinterlacing filter.  I've
 also tried using libmpeg2 with the kernel and linear blend filter.
 Nothing seems to help and the CPU always goes through the roof.

   Here is the output from mythfrontend -v playback.  I have Use
 XvMC for playback checked and bobdeint filter selected.

 2005-11-22 21:46:49.885 New DB connection, total: 1
 Total desktop width=1280, height=720, numscreens=1
 2005-11-22 21:46:49.891 Using screen 0, 1280x720 at 0,0
 2005-11-22 21:46:49.895 mythfrontend version: 0.18.1.20050510-1
 www.mythtv.org
 2005-11-22 21:46:49.896 Enabled verbose msgs : important general playback
 2005-11-22 21:46:50.016 max_width: 1280 max_height: 720
 2005-11-22 21:46:50.066 Switching to square mode (blue)
 2005-11-22 21:46:50.630 Joystick disabled.
 2005-11-22 21:46:50.688 Registering Internal as a media playback plugin.
 2005-11-22 21:46:50.976 Connecting to backend server: localhost:6543
 (try 1 of 5)
 2005-11-22 21:46:50.986 Using protocol version 15
 2005-11-22 21:46:50.997 Starting media monitor.
 2005-11-22 21:47:10.304 All Programs
 2005-11-22 21:47:12.199 detectInterlace(Detect Scan, Detect Scan, 29.97,
 1088) -Interlaced Scan
 2005-11-22 21:47:12.199 Interlaced: Interlaced Scan  video_height: 1088
   fps: 29.97
 2005-11-22 21:47:12.200 Estimated bitrate = 0
 2005-11-22 21:47:12.431 Image size. dispxoff 0, dispyoff: 0, dispwoff:
 0, disphoff: 0
 2005-11-22 21:47:12.431 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
 2005-11-22 21:47:12.435 waiting for prebuffer...
 2005-11-22 21:47:12.571 prebuffer wait timed out..
 2005-11-22 21:47:12.571 waiting for prebuffer...
 2005-11-22 21:47:12.719 prebuffer wait timed out..
 2005-11-22 21:47:12.719 waiting for prebuffer...
 2005-11-22 21:47:13.155 New DB connection, total: 2
 2005-11-22 21:47:13.217 detectInterlace(Detect Scan, Detect Scan, 29.97,
 1088) -Interlaced Scan
 2005-11-22 21:47:13.217 Interlaced: Interlaced Scan  video_height: 1088
   fps: 29.97
 2005-11-22 21:47:13.288 Estimated bitrate = 0
 2005-11-22 21:47:13.296 Opening audio device '/dev/dsp'.
 2005-11-22 21:47:13.297 Opening OSS audio device '/dev/dsp'.
 2005-11-22 21:47:13.307 Over/underscan. V: 0, H: 0, XOff: 0, YOff: 0
 2005-11-22 21:47:13.316 Using XV port 240
 2005-11-22 21:47:13.321 Image size. dispxoff 0, dispyoff: 0, dispwoff:
 1280, disphoff: 720
 2005-11-22 21:47:13.321 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
 2005-11-22 21:47:13.931 Changing from None to WatchingPreRecorded
 2005-11-22 21:47:13.933 Using deinterlace method bobdeint
 2005-11-22 21:47:13.934 Using realtime priority.
 2005-11-22 21:47:14.035 nVidiaVideoSync: VBlank ioctl did not work,
 unimplemented in this driver?
 2005-11-22 21:47:14.035 DRMVideoSync: Could not open device
 /dev/dri/card0, No such file or directory
 2005-11-22 21:47:14.036 Set video sync frame interval to 33366
 2005-11-22 21:47:14.036 Using audio as timebase
 2005-11-22 21:47:14.036 Video timing method: RTC
 2005-11-22 21:47:14.036 Refresh rate: 16882, frame interval: 33366
 2005-11-22 21:47:14.036 waiting for prebuffer...
 2005-11-22 21:47:14.172 prebuffer wait timed out..
 2005-11-22 21:47:14.172 waiting for prebuffer...
 2005-11-22 21:47:14.857 waiting for prebuffer...
 2005-11-22 21:47:14.992 prebuffer wait timed out..
 2005-11-22 21:47:15.063 waiting for prebuffer...
 2005-11-22 21:47:15.199 prebuffer wait timed out..
 2005-11-22 21:47:15.270 waiting for prebuffer...
 2005-11-22 21:47:15.406 prebuffer wait timed out..
 2005-11-22 21:47:15.477 waiting for prebuffer...
 2005-11-22 21:47:15.612 prebuffer wait timed out..
 2005-11-22 21:47:15.683 waiting for prebuffer...
 2005-11-22 21:47:15.819 prebuffer wait timed out..
 2005-11-22 21:47:15.819 waiting for prebuffer...
 2005-11-22 21:47:15.953 prebuffer wait timed out..
 2005-11-22 21:47:15.954 waiting for prebuffer...
 2005-11-22 21:47:17.801 prebuffering pause
 2005-11-22 21:47:17.802 waiting for prebuffer...