[mythtv-users] Problems with HDTV -- Frontend or backend?

[Ryan Steffes]

I just got my A180 up and running, and am experimenting with it.  I'm
recording OTA channels now, because setting up the QAM channels proved
to be beyond me.  I THINK I'm getting good recordings, but I can't be
positive because I can't seem to get them to play back properly.  I'm
trying to figure out if the problem is on the recording or playing
end.

I'm playing through an NVIDIA GeForce4 Ti 4200 to a standard
resolution TV.  I'm guessing that, despite not being an HDTV, all the
normal trouble with heavy bandwidth still apply, correct?  When I tune
to the recordings off the A180, the run super slow motion with no
sound at all.  If I watch the slow motion long enough, I get a burst
of normal sound or a snap/pop.  I also get funny boxy glitches on the
screen every once in a while.

I'm currently transcoding a HD programing to see if I can watch it
afterwards, but I thought I'd sent out a request for information
before I crash for the night.  Basically, I'm trying to figure out if
these problems seem to indicate a problem with the recordings
themselves, or a problem with the playback.  Also, I'd kinda like some
confirmation that those lines about XvMC mean I do have it configured
right (the screen isn't black and white like searches in the mailing
list have suggested might happen).

Thanks for any help,

Ryan


2007-09-16 02:10:52.181 TV: Attempting to change from None to
WatchingPreRecorded
2007-09-16 02:10:52.286 DPMS Deactivated
2007-09-16 02:10:52.430 AFD: Opened codec 0x82b8080,
id(MPEG2VIDEO_XVMC) type(Video)
2007-09-16 02:10:52.431 AFD: Opened codec 0x83241b0, id(AC3) type(Audio)
2007-09-16 02:10:52.438 Opening ALSA audio device 'mixed-digital'.
ALSA lib control.c:739:(snd_ctl_open_noupdate) Invalid CTL /dev/mixer
2007-09-16 02:10:52.472 AudioOutput Warning: Mixer attach error -2: No
such file or directory
                        Check Mixer Name in Setup: '/dev/mixer'
2007-09-16 02:10:52.573 VideoOutputXv: XvMC Adaptor Name: 'NV17 Video Overlay'
2007-09-16 02:10:52.679 WriteAudio: buffer underrun
2007-09-16 02:10:55.315 TV: Changing from None to WatchingPreRecorded
2007-09-16 02:10:55.317 Realtime priority would require SUID as root.
2007-09-16 02:10:55.326 XvMC: picture structure FRAME
2007-09-16 02:10:55.454 OpenGLVideoSync()
2007-09-16 02:10:55.454 ~OpenGLVideoSync() -- begin
2007-09-16 02:10:55.454 ~OpenGLVideoSync() -- end
2007-09-16 02:10:55.456 Video timing method: RTC
2007-09-16 02:10:55.563 NVP: prebuffering pause
2007-09-16 02:10:55.663 NVP: prebuffering pause
2007-09-16 02:10:55.755 NVP: prebuffering pause
2007-09-16 02:10:55.859 NVP: prebuffering pause
2007-09-16 02:10:55.936 NVP: prebuffering pause
2007-09-16 02:10:56.006 NVP: prebuffering pause
2007-09-16 02:10:56.103 NVP: prebuffering pause
2007-09-16 02:10:56.199 NVP: prebuffering pause
2007-09-16 02:10:56.289 NVP: prebuffering pause
2007-09-16 02:10:56.387 NVP: prebuffering pause
2007-09-16 02:10:56.475 NVP: prebuffering pause
2007-09-16 02:10:56.575 NVP: prebuffering pause
2007-09-16 02:10:56.671 NVP: prebuffering pause
2007-09-16 02:10:56.754 NVP: prebuffering pause
2007-09-16 02:10:56.843 NVP: prebuffering pause
2007-09-16 02:10:56.939 NVP: prebuffering pause
2007-09-16 02:10:57.031 NVP: prebuffering pause
2007-09-16 02:10:57.123 NVP: prebuffering pause
2007-09-16 02:10:57.211 NVP: prebuffering pause
2007-09-16 02:10:57.292 NVP: prebuffering pause
2007-09-16 02:10:57.395 NVP: prebuffering pause
2007-09-16 02:10:57.471 NVP: prebuffering pause
2007-09-16 02:10:57.563 NVP: prebuffering pause
2007-09-16 02:10:57.660 NVP: prebuffering pause
2007-09-16 02:10:57.741 NVP: prebuffering pause
2007-09-16 02:10:57.824 NVP: prebuffering pause
2007-09-16 02:10:57.915 NVP: prebuffering pause
2007-09-16 02:10:58.024 NVP: prebuffering pause
2007-09-16 02:10:58.105 NVP: prebuffering pause
2007-09-16 02:10:58.172 NVP: prebuffering pause
2007-09-16 02:10:58.256 NVP: prebuffering pause
2007-09-16 02:10:58.343 NVP: prebuffering pause
2007-09-16 02:10:58.424 NVP: prebuffering pause
2007-09-16 02:10:58.524 NVP: prebuffering pause
2007-09-16 02:10:58.615 NVP: prebuffering pause
2007-09-16 02:10:58.695 NVP: prebuffering pause
2007-09-16 02:10:58.792 NVP: prebuffering pause
2007-09-16 02:10:58.891 NVP: prebuffering pause
2007-09-16 02:10:58.983 NVP: prebuffering pause
2007-09-16 02:10:59.074 NVP: prebuffering pause
2007-09-16 02:10:59.167 NVP: prebuffering pause
2007-09-16 02:10:59.259 NVP: prebuffering pause
2007-09-16 02:10:59.344 NVP: prebuffering pause
2007-09-16 02:10:59.411 NVP: prebuffering pause
2007-09-16 02:10:59.492 NVP: prebuffering pause
2007-09-16 02:10:59.575 NVP: prebuffering pause
2007-09-16 02:10:59.656 NVP: prebuffering pause
2007-09-16 02:10:59.658 WriteAudio: buffer underrun
2007-09-16 02:10:59.739 NVP: prebuffering pause
2007-09-16 02:10:59.824 NVP: prebuffering pause
2007-09-16 02:10:59.830 WriteAudio: buffer underrun
2007-09-16 02:10:59.901 NVP: prebuffering pause
2007-09-16 02:10:59.936 [mpegvideo_xvmc @ 0xb74631a8]invalid mb type
in B Frame at 22 51
2007-09-16 02:10:59.936 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 43 52
2007-09-16 02:10:59.936 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 53 54
2007-09-16 02:10:59.937 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 79 55
2007-09-16 02:10:59.952 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 60 59
2007-09-16 02:10:59.956 [mpegvideo_xvmc @ 0xb74631a8]Warning MVs not available
2007-09-16 02:10:59.987 NVP: prebuffering pause
2007-09-16 02:10:59.999 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 89 15
2007-09-16 02:10:59.999 [mpegvideo_xvmc @ 0xb74631a8]ac-tex damaged at 76 17
2007-09-16 02:11:00.001 [mpegvideo_xvmc @ 0xb74631a8]invalid mb type
in P Frame at 38 21
2007-09-16 02:11:00.001 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 76 23
2007-09-16 02:11:00.002 [mpegvideo_xvmc @ 0xb74631a8]mb incr damaged
2007-09-16 02:11:00.019 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 55 46
2007-09-16 02:11:00.020 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 77 47
2007-09-16 02:11:00.020 [mpegvideo_xvmc @ 0xb74631a8]invalid cbp at 85 51
2007-09-16 02:11:00.022 [mpegvideo_xvmc @ 0xb74631a8]ac-tex damaged at 37 54
2007-09-16 02:11:00.023 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 74 55
2007-09-16 02:11:00.023 [mpegvideo_xvmc @ 0xb74631a8]ac-tex damaged at 35 56
2007-09-16 02:11:00.023 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 19 58
2007-09-16 02:11:00.071 [mpegvideo_xvmc @ 0xb74631a8]00 motion_type at 58 0
2007-09-16 02:11:00.071 [mpegvideo_xvmc @ 0xb74631a8]ac-tex damaged at 46 2