[mythtv-users] Strange shocking screen during recording/watching

mythtvuser at vandrosthagen.net mythtvuser at vandrosthagen.net
Sat Feb 18 18:57:52 UTC 2012


Another update..

After debugging/googling allot on the sound problem(see below) i found out that this is happening if the sound config/buffer is set wrong. But because this is only happing during recording.. it looks like that the sound and screen isn't in sync somehow during recording fase.. I tried allot of different settings i found on the web but everything i do worses the livetv or the already recorded programs..

I'm wondering if somehow i can see if the sound and screen isn't in sync during recording.. Is there a log option (not the full one because that gives me to much) that will give me more info then i can see right now.. 

The loging settings i use now are : -v most,important,record,playback,schedule,audio,gui

But maybe there is an hidden switch i can use to see what is happening during the recording/watching.. If so i could make a ticket (first time btw :P)

Thanks for the help..
  _____  

From: mythtvuser at vandrosthagen.net
To: Discussion about MythTV [mailto:mythtv-users at mythtv.org]
Sent: Fri, 17 Feb 2012 15:08:05 +0100
Subject: Re: [mythtv-users] Strange shocking screen during recording/watching

      A little update.. I did some extra debugging and found that during record/watching the following errors come into the mythfrontend.. The strange thing is that i don't see this in livetv..

------------------------------ record/watch -------------------------------------------------
'video_output' mean = '40116.34', std. dev. = '6424.36', fps = '24.93'
'video_output' mean = '39999.72', std. dev. = '3365.11', fps = '25.00'
'video_output' mean = '39999.35', std. dev. = '45.62', fps = '25.00'
'video_output' mean = '39999.24', std. dev. = '43.14', fps = '25.00'
2012-02-17 15:03:05.298 Player(9): 3600 interlaced frames seen.
'video_output' mean = '39999.21', std. dev. = '2185.10', fps = '25.00'
2012-02-17 15:03:06.698 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
2012-02-17 15:03:07.305 Player(9): Video is 3.02732 frames behind audio (too slow), dropping frame to catch up.
2012-02-17 15:03:07.305 AO: Pause 1
2012-02-17 15:03:07.305 AO: Pause 0
2012-02-17 15:03:07.311 AO: OutputAudioLoop: Play Event
'video_output' mean = '39800.43', std. dev. = '17515.61', fps = '25.13'
'video_output' mean = '39999.49', std. dev. = '43.65', fps = '25.00'
'video_output' mean = '39999.34', std. dev. = '46.60', fps = '25.00'
2012-02-17 15:03:21.279 Player(9): 4000 interlaced frames seen.
'video_output' mean = '39999.36', std. dev. = '46.12', fps = '25.00'
'video_output' mean = '40016.39', std. dev. = '16967.83', fps = '24.99'
'video_output' mean = '40032.00', std. dev. = '17118.06', fps = '24.98'
'video_output' mean = '39999.76', std. dev. = '42.26', fps = '25.00'
2012-02-17 15:03:35.913 Player(9): Video is 3.25385 frames behind audio (too slow), dropping frame to catch up.
2012-02-17 15:03:35.914 AO: Pause 1
2012-02-17 15:03:35.914 Player(9): Video is 3.32787 frames behind audio (too slow), dropping frame to catch up.
2012-02-17 15:03:35.914 AO: Pause 1
2012-02-17 15:03:35.914 Player(9): Video is 3.1334 frames behind audio (too slow), dropping frame to catch up.
2012-02-17 15:03:35.914 AO: Pause 1
2012-02-17 15:03:35.914 AO: Pause 0
2012-02-17 15:03:35.914 AO: OutputAudioLoop: Play Event
2012-02-17 15:03:37.280 Player(9): 4400 interlaced frames seen.
'video_output' mean = '39965.69', std. dev. = '22435.21', fps = '25.02'
'video_output' mean = '40000.39', std. dev. = '4756.18', fps = '25.00'
'video_output' mean = '39999.27', std. dev. = '46.33', fps = '25.00'
'video_output' mean = '39999.12', std. dev. = '40.88', fps = '25.00'
2012-02-17 15:03:53.280 Player(9): 4800 interlaced frames seen.
'video_output' mean = '39999.61', std. dev. = '5116.29', fps = '25.00'
2012-02-17 15:03:56.691 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
-------------------------------------------------------------------------------------------------------------------

-------------------------------- Live TV ---------------------------------------------------------------
'video_output' mean = '39999.11', std. dev. = '47.88', fps = '25.00'
'video_output' mean = '39999.49', std. dev. = '47.28', fps = '25.00'
'video_output' mean = '39999.16', std. dev. = '43.78', fps = '25.00'
'video_output' mean = '39999.50', std. dev. = '49.82', fps = '25.00'
2012-02-17 15:06:14.658 Player(a): 800 interlaced frames seen.
'video_output' mean = '39999.08', std. dev. = '43.47', fps = '25.00'
'video_output' mean = '39999.31', std. dev. = '46.49', fps = '25.00'
'video_output' mean = '39998.98', std. dev. = '48.14', fps = '25.00'
'video_output' mean = '39999.10', std. dev. = '44.03', fps = '25.00'
2012-02-17 15:06:28.258 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
2012-02-17 15:06:30.658 Player(a): 1200 interlaced frames seen.
-------------------------------------------------------------------------------------------------------------


  _____  

From: mythtvuser at vandrosthagen.net
To: Discussion about MythTV [mailto:mythtv-users at mythtv.org]
Sent: Fri, 17 Feb 2012 14:46:54 +0100
Subject: Re: [mythtv-users] Strange shocking screen during recording/watching

      Hello Gareth,

I check that in my mythtv-setup but no it is not on.. Comm-check is done after the show is recorded. But thanks for the tip.. that was something i missed..;)


  _____  

From: Gareth Glaccum [mailto:gareth.glaccum at btopenworld.com]
To: 'Discussion about MythTV' [mailto:mythtv-users at mythtv.org]
Sent: Fri, 17 Feb 2012 14:13:30 +0100
Subject: Re: [mythtv-users] Strange shocking screen during recording/watching




Do you have it auto-commflagging whilst recording, or set to commflag after recording. 

This is a setting that may have changed between the old and new machines, and would explain why you don’t have the issue with liveTV I think.

Gareth

 




From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Quint van Drosthagen
Sent: 17 February 2012 10:10
To: mythtv-users at mythtv.org
Subject: [mythtv-users] Strange shocking screen during recording/watching

 

Hi guys,

 

Since a month now i have replaced my old mythtv box with a brand new one.. Because i watch allot of HD content and record allot of shows i decided that i needed to have a more powerfull and future proof machine so decided to upgrade not only mem and cpu but also to a GT430 card and SSD drives 2x Corsair Performance Pro Series 256 GB, S-ATA III.

 

But now the problem with this setup against the old one.. When i record a program like say House.. and i decided to watch after 20 minutes (so recording is still going on) to that recording so i can skip commercials etc.. the screen shocks every xx seconds.. The strange thing is that this is only happening during the record/watch fase.. if is go to livetv during the same recording i can watch it without any shocking.. and if the recording is done and i watch a program no problems either.. So i thought maybe it is an IO problem somewhere so i tuned my SSD according and looked at iotop/top etc. etc. but i can't find any bottlenecks anywhere.. It is so verry strange that everything is working as a charm only if i record something and watch it at the same time.. The strangest thing i find is that livetv (also a sort of recording/watching) isn't having any problems.. 

 

It is so strange.. And i hope somebody can help me figure out what is going on here..;)

 

Regards

Quint      
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