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eit on air tv guide data on dvb (uk)
http://forums.linhes.org/viewtopic.php?f=6&t=14623
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Author:  declanh [ Mon Mar 19, 2007 3:26 pm ]
Post subject:  eit on air tv guide data on dvb (uk)

Does anyone experience stuttering of playback while the eit events are added to the database?

I think this is what im seeing and wondering if there is a workaround...

alternatively is there an *easy* way of setting up xmltv for all the existing tuned channels ?

ive edited channels files before, on a previous knoppmyth install, added xmltvids for each channel via the channel editor etc... and am loathe to do it again (a lot more channels this time) especially if there is an easy way out.

D

Author:  the_q [ Tue Mar 20, 2007 2:25 am ]
Post subject: 

This should sort you out

hxxp://parker1.co.uk/mythtv_id.php

Author:  declanh [ Tue Mar 20, 2007 6:27 pm ]
Post subject: 

the_q wrote:
This should sort you out

hxxp://parker1.co.uk/mythtv_id.php


Downloaded it and tried it ... its not quite there for me, Its not configured to deal with the northern ireland channels.

I'll have a look at the config files to see if its easy enough to change....

Author:  the_q [ Wed Mar 21, 2007 9:12 am ]
Post subject: 

What are you getting eit off? satellite?

I don't really notice any lag when get eit data.

Author:  declanh [ Wed Mar 21, 2007 2:07 pm ]
Post subject: 

the_q wrote:
What are you getting eit off? satellite?

I don't really notice any lag when get eit data.


Im getting it on DVB terrestrial broadcast in the uk.
I've noticed it less now, but it was pretty bad on the first day of the install

I did a
tail -f /var/log/mythtv/mythbackend.log
from an xterm and watched the log file
glitches in playback seemed to coincide with EIT event updates.
im not alone as it suggests in this as this thread indicates

http://mysettopbox.tv/phpBB2/viewtopic.php?t=9317&highlight=eit+playback

Author:  declanh [ Wed Mar 21, 2007 6:33 pm ]
Post subject: 

declanh wrote:
the_q wrote:
What are you getting eit off? satellite?

I don't really notice any lag when get eit data.


Im getting it on DVB terrestrial broadcast in the uk.
I've noticed it less now, but it was pretty bad on the first day of the install

I did a
tail -f /var/log/mythtv/mythbackend.log
from an xterm and watched the log file
glitches in playback seemed to coincide with EIT event updates.
im not alone as it suggests in this as this thread indicates

http://mysettopbox.tv/phpBB2/viewtopic.php?t=9317&highlight=eit+playback



I think im now coming to the conclusion the stutter im seeing while watching livetv comes at schedule change time (typically on the hour or half hour) - its even crashed out of the front end on two occasions tonight
with the error


"Error Was encountered while displaying video"

Author:  the_q [ Thu Mar 22, 2007 2:44 am ]
Post subject: 

What hardware are you running? Processor, dvb card etc.

Author:  mad_paddler [ Thu Mar 22, 2007 7:36 am ]
Post subject: 

I used to get the stuttering when it was updating, i fixed it by wiping the recording schedule and previously recorded tables in the database...

Not really much of a solution i know :/

Author:  declanh [ Thu Mar 22, 2007 1:42 pm ]
Post subject: 

the_q wrote:
What hardware are you running? Processor, dvb card etc.

Pentium 4 1.7Ghz
512mb Ram
ATI graphics card
3 PCI Win TV-Nova-t Digital terrestrial tuners

I think I have now come to the conclusion that its not EIT data thats causing the stutter its the switch to an new recording file at each change in the recording schedule.

I ran the frontend interactively from an xterm and was able to watch its logging to the terminal....
it shows
Code:
2007-03-22 18:38:18.089 TV: Changing from None to WatchingLiveTV
2007-03-22 18:38:18.170 Using realtime priority.
2007-03-22 18:38:18.199 Video timing method: DRM
2007-03-22 18:38:18.360 VideoOutputXv: XvMCTex: Init failed
2007-03-22 18:38:18.362 VideoOutputXv: XVideo Adaptor Name: 'ATI Radeon Video Overlay'
2007-03-22 18:38:19.289 AFD: Opened codec 0x95d9e90, id(MPEG2VIDEO) type(Video)
2007-03-22 18:38:19.336 AFD: Opened codec 0x95d9a70, id(MP3) type(Audio)
2007-03-22 18:38:19.339 AFD: Opened codec 0x95d9140, id(MP3) type(Audio)
2007-03-22 18:38:19.342 AFD: Opened codec 0x95edae0, id(DVB_SUBTITLE) type(Subtitle)
2007-03-22 18:38:19.389 Opening OSS audio device '/dev/dsp'.
2007-03-22 18:38:19.404 NVP: Enabling Audio
2007-03-22 19:00:02.742 NVP: prebuffering pause
2007-03-22 19:00:04.470 NVP: Prebuffer wait timed out 10 times.
2007-03-22 19:00:06.203 NVP: Prebuffer wait timed out 10 times.
[b]2007-03-22 19:00:07.557 RingBuf(/myth/tv/1004_20070322190000.mpg): Invalid file (fd -1) when opening '/myth/tv/1004_20070322190000.mpg'.
2007-03-22 19:00:07.567 NVP, Error: SwitchToProgram's OpenFile failed.
2007-03-22 19:00:07.567 NVP, Error: Unknown error, exiting decoder
[/b]2007-03-22 19:00:07.577 TV: Attempting to change from WatchingLiveTV to None



Im drawing the conclusion here that the front end is trying to open the new backend recording file too fast and failing....

anyone else seen this and can think of a work around ?

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