Opened 10 years ago

Closed 9 years ago

#7492 closed defect (invalid)

annoying problems with poor DVB signal (Video frame buffering failed too many times)

Reported by: voyo Owned by: Janne Grunau
Priority: major Milestone: unknown
Component: MythTV - DVB Version: head
Severity: medium Keywords: Video frame buffering failed too many times
Cc: Ticket locked: no

Description

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

Change History (2)

comment:1 Changed 10 years ago by anonymous

hey ! same problem was here. It caused me to abandondon mythtv. On kaffeine its working fine!

comment:2 Changed 9 years ago by robertm

Resolution: invalid
Status: newclosed

No obvious interest in this ticket, we assume a moderate amount of working signal. Error resiliency may have improved somewhat in trunk, but the reality is that you need strong, solid signal.

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