[mythtv-users] PVR-250 video problems, for lack of a better title

Dan Berger dan at theidiots.org
Sun Nov 30 21:57:49 EST 2003


Hi,
 
Updating my own post with what mythfrontend returns when this happens. The
errors occurred about 5 minutes into watching LiveTV.
 
[mythtv at mythtv etc]$ mythfrontend
2003-11-30 21:39:52 Enabled verbose msgs : important general
Found 2 Xinerama Screens.
Using first Xinerama screen, 800x600+0+0
mythtv: could not open config file
mythtv: No such file or directory
Failed to init /home/mythtv/.mythtv/lircrc for mythtv
connecting to backend server: 66.92.100.119:6543
Input #0, mpeg, from
'rbuf://66.92.100.119:6543/var/lib/mythtv_cache/ringbuf1.nuv':
  Stream #0.0: Video: mpeg2video, 480x480, 29.97 fps, 6000 kb/s
  Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
Opening OSS audio device '/dev/dsp'.
Over/underscanning. V: 0.000000, H: 0.000000, XOff: 0, YOff: 0
Found 2 Xinerama Screens.
Using first Xinerama screen, 800x600+0+0
Using XV port 105
Changing from None to WatchingLiveTV
ac-tex damaged at 19 25
concealing errors
Warning MVs not available
invalid mb type in B Frame at 27 5
concealing errors
ac-tex damaged at 15 27
concealing errors
concealing errors
ac-tex damaged at 6 27
concealing errors
concealing errors
ac-tex damaged at 14 24
concealing errors
ac-tex damaged at 14 24
concealing errors
ac-tex damaged at 10 4
concealing errors
ac-tex damaged at 16 15
concealing errors
ac-tex damaged at 20 23
concealing errors
ac-tex damaged at 9 8
concealing errors
ac-tex damaged at 10 27
concealing errors
invalid cbp at 17 14
concealing errors
skiped MB in I frame at 23 29
concealing errors
ac-tex damaged at 27 13
concealing errors
ac-tex damaged at 14 24
skiped MB in I frame at 26 29
concealing errors
ac-tex damaged at 7 12
concealing errors
ac-tex damaged at 15 7
concealing errors
ac-tex damaged at 21 26
concealing errors
ac-tex damaged at 4 9
concealing errors
ac-tex damaged at 11 26
concealing errors
ac-tex damaged at 19 24
concealing errors
ac-tex damaged at 28 11
concealing errors
ac-tex damaged at 19 9
concealing errors
invalid mb type in I Frame at 7 15
concealing errors
invalid mb type in I Frame at 0 12
invalid mb type in I Frame at 0 13
invalid mb type in I Frame at 0 14
invalid mb type in I Frame at 0 15
invalid mb type in I Frame at 0 16
ac-tex damaged at 0 17
invalid mb type in I Frame at 0 18
invalid mb type in I Frame at 0 19
invalid mb type in I Frame at 0 20
invalid mb type in I Frame at 0 21
skiped MB in I frame at 1 22
invalid mb type in I Frame at 0 23
invalid mb type in I Frame at 0 24
ac-tex damaged at 0 25
invalid mb type in I Frame at 0 26
invalid mb type in I Frame at 0 27
skiped MB in I frame at 2 28
invalid mb type in I Frame at 0 29
concealing errors
ac-tex damaged at 12 26
concealing errors
mb incr damaged
concealing errors
concealing errors
ac-tex damaged at 24 13
concealing errors
concealing errors
invalid cbp at 7 23
concealing errors
skiped MB in I frame at 27 23
ac-tex damaged at 4 24
concealing errors
concealing errors
ac-tex damaged at 14 10
concealing errors
invalid cbp at 15 7
concealing errors
concealing errors
ac-tex damaged at 19 12
concealing errors
ac-tex damaged at 24 19
concealing errors
ac-tex damaged at 25 26
concealing errors
ac-tex damaged at 0 27
concealing errors
ac-tex damaged at 10 26
concealing errors
ac-tex damaged at 13 22
concealing errors
ac-tex damaged at 10 20
concealing errors
ac-tex damaged at 19 21
concealing errors
ac-tex damaged at 24 15
concealing errors
2003-11-30 21:48:16 prebuffering pause
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
ac-tex damaged at 9 3
mb incr damaged
concealing errors
2003-11-30 21:48:29 prebuffering pause
Waited 2 seconds for data to become available, waiting again...
Waited 2 seconds for data to become available, waiting again...
 
Keeps waiting, until I hit ctrl-c 

Hope that helps anyone who can help me out...
-Dan
________________________________

	From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Dan Berger
	Sent: Sunday, November 30, 2003 3:55 PM
	To: 'Discussion about mythtv'
	Subject: [mythtv-users] PVR-250 video problems, for lack of a better
title
	
	
	Hi,
	 
	First let me say that I have put hundreds of hours in MythTV and
have formatted about a dozen times! LOL
	 
	Next, let me thank all those developers who have contributed their
time and users who have contributed their knowledge. I was going to do this
when I got everything working, hehe
	 
	Third, I have read the mailing list archives, read the HOWTO,
Jarod's guide, searched google, etc. countless of times for help, including
on this subject.
	 
	Finally, here's the meat:
	 
	Problem: Most likely a PVR-250 (ivtv) related problems. Few symptoms
that are possibly related.
	    1. A/V not sync'd video is ahead by a couple of noticeable
miliseconds.
	    2. Watching delayed LiveTV (paused for a couple of minutes)
video is really jittery and unwatchable. Sound is great.
		    3. When pausing, sometimes mythtv (ivtv) crashes
(happened right before this email for the first time after 5:30 of pause. I
was unable to alt-tab or even switch to a new virtual terminal)
	 
	Playing video using mplayer via MythVideo is just fine. No problem
there.
	 
		Specs:
	    - Asus A7V8X-X (kt400) w/ onboard via82xx sound, AMD 2200 XP,
PVR 250
	    - Using RH9, ALSA for audio
	    - PVR-250 using RCA audio in and SVideo in
	    - Output of test_ioctl attached
	    - No real partitions set up. / is on an etc3 LVM
	 
	Have tried:
	    - Making sure I'm using DMA (added proper hdparm to rc.local as
well)
	 
	[root at mythtv mythtv]# /bin/dmesg | grep DMA
	VP_IDE: VIA vt8235 (rev 00) IDE UDMA133 controller on pci00:11.1
	    ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
	    ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:pio
	hda: 240121728 sectors (122942 MB) w/2048KiB Cache,
CHS=14946/255/63, UDMA(133)
	hdc: ATAPI 48X DVD-ROM drive, 512kB Cache, UDMA(33)   
	 
	    - Checking jitter reduction in MythTV playback setup
	    - Checking interlace video in MythTV playback setup... that
fixed my scanlines
	 
	Possible cause:
	    - The known kt400 big file issue? Sometimes, ivtv returns DMA
error (kt400 related). I just reboot and it doesn't happen again.
	    - Some setting I missed?
	 
	Thanks for reading :)
	 
	-Dan




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