[mythtv-users] Seriously need help fixing new setup

steve networks1 at cox.net
Tue Nov 22 14:04:45 UTC 2011

On 11/22/2011 1:34 AM, Michael T. Dean wrote:
> MythTV doesn't rely on any form of external name-based address 
> resolution. All addressing of requests is done using data in the 
> MythTV configuration. However, MythTV /does/ rely on each host having 
> a unique identifier that we can use to store its 
> settings/configuration--and we use the host name, as provided by the 
> system, unless the user creates an override and specifies their own 
> identifier. Mike 

Gents, many, many thanks for all your help.  But I decided it was 
hopeless, threw in the towel, and started over from scratch.  Using your 
advice on static ip, hostnaming, etc.,  I am happy to report I now have 
a working setup.  However, although I can record and play, I am getting 
some messages in the frontend log that indicate problems.  To wit:

2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]non-existing PPS referenced
2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]sps_id out of range
2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]non-existing SPS 32 referenced in b
uffering period
2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]non-existing PPS 0 referenced
2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]decode_slice_header error
2011-11-22 06:42:11.701 [h264 @ 0x35326f4f20]no frame!
2011-11-22 06:42:11.753 [h264 @ 0x35326f4f20]mmco: unref short failure
2011-11-22 06:42:11.772 AFD: Opened codec 0x3399970, id(H264) type(Video)
2011-11-22 06:42:11.772 AFD: codec AAC has 2 channels
2011-11-22 06:42:11.773 AFD: Opened codec 0x3399ff0, id(AAC) type(Audio)
2011-11-22 06:42:11.930 Pulse: PulseAudio resume OK
2011-11-22 06:42:12.030 Pulse: PulseAudio suspend OK
2011-11-22 06:42:12.047 AO: Opening audio device 'default' ch 2(2) sr 48000 sf s
igned 32 bit reenc 0
2011-11-22 06:42:12.049 ALSA, Error: Setting hardware audio buffer size to 6016
2011-11-22 06:42:12.049 ALSA, Error: Error opening /proc/asound/card0/pcm0p/sub0
/prealloc: Permission denied.
2011-11-22 06:42:12.049 ALSA, Error: Try to manually increase audio buffer with:
  echo 6016 | sudo tee /proc/asound/card0/pcm0p/sub0/prealloc
2011-11-22 06:42:12.049 ALSA, Error: Unable to sufficiently increase ALSA hardwa
re buffer size - underruns are likely
2011-11-22 06:42:12.056 AudioPlayer: Enabling Audio
2011-11-22 06:42:12.509 VDPAU: Created 2 output surfaces.
2011-11-22 06:42:12.510 VDPAU: Version 1
2011-11-22 06:42:12.510 VDPAU: Information NVIDIA VDPAU Driver Shared Library  2
80.13  Wed Jul 27 17:15:20 PDT 2011
2011-11-22 06:42:12.510 VDPAU: Created VDPAU render device 1366x768
2011-11-22 06:42:12.559 OSD: Base theme size: 1280x720
2011-11-22 06:42:12.559 OSD: Scaling factors: 1.06562x1.06667
2011-11-22 06:42:12.655 [h264 @ 0x35326f4f20]mmco: unref short failure
2011-11-22 06:42:12.711 OSD: Base theme size: 1280x720
2011-11-22 06:42:12.711 OSD: Scaling factors: 1.06562x1.06667
2011-11-22 06:42:12.724 Player(0): Video timing method: USleep with busy wait
2011-11-22 06:42:12.725 TV: Changing from None to WatchingPreRecorded
2011-11-22 06:42:12.747 ScreenSaverX11Private: DPMS Deactivated 1
2011-11-22 06:42:12.747 Player(0): Failed to enable deinterlacing
2011-11-22 06:42:12.757 VDPAU: Added 2 output surfaces (total 4, max 4)
2011-11-22 06:42:12.778 [h264 @ 0x35326f4f20]mmco: unref short failure

The first three lines are repeated lots of times, maybe 20 or so. I found one post the related this error to ffmplayer playing a blu-ray disk, but this is a broadcast recording.  Any ideas what the problem could be here?

Also there seem to be some issues with ALSA.  Sound is working after I removed alsa-plugins-pulseaudio per instructions on the wiki, but as you can see it doesn't like and can't modify the audio buffer size.  I am using the audio defaults (i.e. ALSA:default) on the frontend.  Should I do what it says and increase the buffer with tee /proc/asound/card0/pcm0p/sub0/prealloc (not sure what tee is)?  If so should the buffer size be 6016?

Many thanks...


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