[mythtv-commits] Ticket #7492: annoying problems with poor DVB signal (Video frame buffering failed too many times)

[MythTV]

#7492: annoying problems with poor DVB signal (Video frame buffering failed too
many times)
--------------------------+-------------------------------------------------
 Reporter:  voyo          |       Owner:  janne  
     Type:  defect        |      Status:  new    
 Priority:  major         |   Milestone:  unknown
Component:  MythTV - DVB  |     Version:  head   
 Severity:  medium        |     Mlocked:  0      
--------------------------+-------------------------------------------------
 I assume this is caused by notch below DBV-S signal, its happening quite
 occasionaly, mostly when is cloudy or raining. LiveTV stops playing,
 exiting to main menu with "Video frame buffering failed too many times"
 message, recordings are cuted, not finished.
 This is causing that WAF (wife acceptance factor) is falling on the flor!
 mplayer and kaffeine are working ok same time, occasionally only dropping
 a frame, sometimes creating MPEG video & sound artifacts (sometimes even
 not, but pausing for a sec) but both very fast sync to the frame and
 continue to work.
 In mythfrontend it looks like that:

 2009-11-03 01:04:40.912 NVP(0): prebuffering pause
 2009-11-03 01:04:42.513 NVP(0): Prebuffer wait timed out 10 times.
 2009-11-03 01:04:44.115 NVP(0): Prebuffer wait timed out 20 times.
 2009-11-03 01:04:45.716 NVP(0): Prebuffer wait timed out 30 times.
 2009-11-03 01:04:47.318 NVP(0): Prebuffer wait timed out 40 times.
 2009-11-03 01:04:48.919 NVP(0): Prebuffer wait timed out 50 times.
 2009-11-03 01:04:50.521 NVP(0): Prebuffer wait timed out 60 times.
 2009-11-03 01:04:52.122 NVP(0): Prebuffer wait timed out 70 times.
 2009-11-03 01:04:53.723 NVP(0): Prebuffer wait timed out 80 times.
 2009-11-03 01:04:55.325 NVP(0): Prebuffer wait timed out 90 times.
 2009-11-03 01:04:56.926 NVP(0): Prebuffer wait timed out 100 times.
 2009-11-03 01:04:56.926 NVP(0), Error: Timed out waiting for prebuffering
 too long. Exiting..
 2009-11-03 01:04:56.952 TV: Attempting to change from Watching
 WatchingLiveTV to None
 2009-11-03 01:04:56.953 [mp2 @ 0x7f7f942a6960]Header missing
 2009-11-03 01:04:56.953 AFD Error: Unknown audio decoding error
 2009-11-03 01:04:57.003 TV: Changing from Watching WatchingLiveTV to None
 2009-11-03 01:04:57.024 ScreenSaverX11Private: DPMS Reactivated 1
 2009-11-03 01:04:57.025 TV: Attempting to change from None to None
 2009-11-03 01:04:57.241 TV: Attempting to change from None to Watching
 WatchingLiveTV
 2009-11-03 01:04:57.244 MythContext: Connecting to backend server:
 10.0.0.200:6543 (try 1 of 1)
 2009-11-03 01:04:57.246 Using protocol version 50
 2009-11-03 01:04:57.249 Spawning LiveTV Recorder -- begin
 2009-11-03 01:04:57.481 Spawning LiveTV Recorder -- end
 2009-11-03 01:04:57.494 We have a
 playbackURL(/var/lib/mythtv/recordings/live/5811_20091103010457.mpg) &
 cardtype(DUMMY)
 2009-11-03 01:04:57.494 We have a RingBuffer
 2009-11-03 01:04:57.545 TV: StartPlayer(0, Watching WatchingLiveTV, main)
 -- begin
 2009-11-03 01:04:57.545 playCtx, Error: Attempting to setup a player, but
 it already exists.
 2009-11-03 01:04:57.545 TV: StartPlayer(0, Watching WatchingLiveTV, main)
 -- end error
 2009-11-03 01:04:57.545 TV Error: LiveTV not successfully started
 2009-11-03 01:04:57.567 ScreenSaverX11Private: DPMS Deactivated 1
 2009-11-03 01:04:57.568 ScreenSaverX11Private: DPMS Reactivated 1

 mythbackend logs, with "verbose most"

 2009-11-03 01:24:38.065 TVRec(1): HW Tuner: 1->1
 2009-11-03 01:24:39.052 DVBChan(1:/dev/dvb/adapter3/frontend0) Warning:
 Unsupported fec_inner parameter.
 2009-11-03 01:24:41.309 DVBSM(/dev/dvb/adapter3/frontend0), Warning: Can
 not count Uncorrected Blocks
                         eno: Operation not supported (95)
 2009-11-03 01:24:42.744 DTVSM(/dev/dvb/adapter3/frontend0) Error: Wrong
 PMT; pmt->pn(8012) desired(8007)
 2009-11-03 01:24:45.295 PID 0x68 status: Encrypted
 2009-11-03 01:24:49.682 PID 0xa6 status: Encrypted
 2009-11-03 01:25:00.456 Finished recording Zielona brygada "Zielona
 brygada
 Kanada 2007 16:9": channel 5811
 2009-11-03 01:25:00.514 AutoExpire: CalcParams(): Max required Free Space:
 3.0 GB w/freq: 15 min

 2009-11-03 01:25:00.656 mythbackend version: trunk [22512] www.mythtv.org
 2009-11-03 01:25:00.659 Using runtime prefix = /usr/local
 2009-11-03 01:25:00.664 Using configuration directory =
 /home/mythtv/.mythtv

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/7492>
MythTV <http://www.mythtv.org/>
MythTV