[mythtv-users] More HD stuttering

[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 = '44733.67', std. dev. = '122733.32', fps = '22.35'
'video_output' mean = '33365.88', std. dev. = '1089.85', fps = '29.97'
'video_output' mean = '33357.06', std. dev. = '2142.64', fps = '29.98'
'video_output' mean = '33344.99', std. dev. = '723.52', fps = '29.99'
'video_output' mean = '33347.45', std. dev. = '1410.13', fps = '29.99'
2005-11-22 21:47:34.562 Changing from WatchingPreRecorded to None
2005-11-22 21:47:34.569 Changing from None to None
2005-11-22 21:47:35.146 detectInterlace(Detect Scan, Detect Scan, 29.97, 
1088) ->Interlaced Scan
2005-11-22 21:47:35.146 Interlaced: Interlaced Scan  video_height: 1088 
  fps: 29.97
2005-11-22 21:47:35.146 Estimated bitrate = 0
2005-11-22 21:47:35.377 Image size. dispxoff 0, dispyoff: 0, dispwoff: 
0, disphoff: 0
2005-11-22 21:47:35.378 Image size. imgx 0, imgy: 0, imgw: 1920, imgh: 1080
2005-11-22 21:47:35.381 waiting for prebuffer...
2005-11-22 21:47:35.516 prebuffer wait timed out..
2005-11-22 21:47:35.517 waiting for prebuffer...
2005-11-22 21:47:35.652 prebuffer wait timed out..


      Can anybody point me in the right direction?  I don't think it's 
hard drive issues, as the CPU is pegged.  It can't keep up.

      Thanks!!!

Chris...

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temporary safety deserve neither liberty nor safety" -- Benjamin
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