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mythtv hanging at program transition
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Author:  nmcaullay [ Thu Nov 01, 2007 4:53 pm ]
Post subject:  mythtv hanging at program transition
Hi all,

Since upgrading to R5F27, i've started noticing that transitioning between programs when watching livetv, sometime the frontend hangs/pauses. Using esc, i can get back to the menu, and start livetv again.

I'm not sure if this was happening in earlier releases, as i generally watch recorded shows, and this doesn't occur on recorded tv.

I did some searching on svn.mythtv.com, and found some tickets that seem to accurately describe what im experiencing.

http://svn.mythtv.com/trac/ticket/2335
http://svn.mythtv.com/trac/ticket/3963

Now, being an avid KM user, i dont really want to enter into recompiling mythtv, which seems to be the solution for this problem (including the above patches).

Since this is only for LiveTV, i might hold off till the next KM release which hopefully will include the above patches.

I've seached this forum, and cant find anyone experiencing similar problems, which is very weird, unless noone watches livetv?

Or am i way off the mark?

Nathan
Author:  manicmike [ Thu Nov 01, 2007 5:00 pm ]
Post subject:  Re: mythtv hanging at program transition
Nathan,

Probably really obvious, but have you disabled the "wait for seq header" option in mythtv-setup?

This problem has been discussed many times in the forum and disabling this option usually fixes it.

Your hardware hasn't been listed, incidentally. You should list it in case it were your hardware at fault.

Mike
Author:  nmcaullay [ Thu Nov 01, 2007 5:32 pm ]
Post subject: 
Hey Mike,

I noticed that in the SVN ticket, but the majority of the replies said that doing that "sort of" fixed the problem, and later in the ticket, there was patches and happy users :)

I'm at work at the moment, but i will try disabling the "wait for seq header" trick when i get home tonight.

I'll also get my hardware listed, it's a bit of a mongrel setup, so i cant remember off the top of my head... i've been running KM on the same HW for about 2 years, and only just started noticing this issue... but then again, i dont watch too much livetv...

Also, thanks for your efforts on the aussie epg script stuff. I spent ages getting my setup to work, and am too scared to blast it away with your stuff, but a mate of mine used it on a fresh install and he is firing along..


Thanks for the reply.

Cheers,

Nathan
Author:  nmcaullay [ Sun Nov 18, 2007 8:05 pm ]
Post subject: 
Hi again,

I tried disabling the "wait for seq header" trick, but to no avail. The problem appears to be consistently reproducable, at the 6pm change over from one program to another, it seems to freeze every time.

I'm pretty sure its not heat related, and i'll get to the logs in detail when i get a chance, and post them.

I'm half inclined to try building mythtv from source (to get the patches mentioned earlier), but am worried that i might bugger up my otherwise 100% functioning KM box.

Is there another setting that i could have wrong? I would be surprised as i've not seen this problem on earlier KM releases.

Any recommendations one way or the other?

Cheers,

Nathan
Author:  nmcaullay [ Mon Nov 19, 2007 4:47 am ]
Post subject: 
To anyone who is listening :)

There is a guide on recompiling mythtv from svn within a R5F27 KM install, see this link
http://mysettopbox.tv/phpBB2/viewtopic. ... 5&start=90

Has anyone done this, are there any side effects?

Cheers,

Nathan
Author:  manicmike [ Tue Nov 20, 2007 1:35 am ]
Post subject: 
nmcaullay wrote:
To anyone who is listening :)

There is a guide on recompiling mythtv from svn within a R5F27 KM install, see this link
http://mysettopbox.tv/phpBB2/viewtopic. ... 5&start=90

Has anyone done this, are there any side effects?

Cheers,

Nathan


Hi Nathan,

As a matter of interest, which cards are you using?

I disabled the wait for seq header thing about 6 months ago and I haven't seen the problem again once.

Mike
Author:  nmcaullay [ Tue Nov 20, 2007 4:14 am ]
Post subject: 
Hey Mike,

I've got 2 Avermedia A777 PCI cards, and 1 Compro T300.
I had a rough start with the avermedia ones a few years back, but have both been ok since support was officially included in v4l-dvb.

The Compro card is a dud at the moment, cant record channel 9 whatever i do. So, its in the third PCI slot, and gets used rarely.

Sounds like it might be used even less if they can get this recording on the same multiplex/backtoback recordings sorted for 0.21?

BTW, where is the best place to put my KM box specs?

Cheers,

Nathan
Author:  nmcaullay [ Tue Nov 20, 2007 4:36 am ]
Post subject: 
Hi again,

I just double checked that the "wait for seq header" was unchecked for all cards, and it wasnt. I've applied it now, and will see what happens.

Probably was watching livetv through the one with it not unchecked.

Will post back with results.

Cheers,

Nathan
Author:  manicmike [ Tue Nov 20, 2007 4:52 am ]
Post subject: 
Cool. Hope the problem goes away this time. Installing with "ausdragon2" will modify that setting in the database, too.

Cheers

Mike
Author:  nmcaullay [ Tue Nov 20, 2007 5:46 am ]
Post subject: 
hey mike,

unfortunately, the showing of 20-to-1 watching livetv froze at end of program, 8:35 (at program transition).

I'll try a different channel, as so far its been 9 ive been trying.

my backend log shows the following
Code:
2007-11-20 20:35:01.116 Finished recording 20 to 1: channel 1009
2007-11-20 20:35:01.272 TVRec(2): Enabling Full LiveTV UI.
[mpegts @ 0xb73257f0]Parser not found for Codec Id: 94211 !
0: start_time: 3148.627 duration: 69.667
1: start_time: 3148.598 duration: 69.660
2: start_time: 3148.590 duration: 69.679
3: start_time: 3148.585 duration: 69.682
4: start_time: 3148.591 duration: 69.682
stream: start_time: 34984.283 duration: 774.543 bitrate=6454 kb/s
2007-11-20 20:35:01.362 AFD: Opened codec 0x826f000, id(MPEG2VIDEO) type(Video)
2007-11-20 20:35:01.367 AFD: Opened codec 0x826f350, id(MP3) type(Audio)
2007-11-20 20:35:01.368 AFD: Opened codec 0x826aa30, id(AC3) type(Audio)
2007-11-20 20:35:01.377 AFD: Opened codec 0x82766a0, id(MPEG2VIDEO) type(Video)
[mpeg2video @ 0xb72283a8]00 motion_type at 1 27
[mpeg2video @ 0xb72283a8]00 motion_type at 14 28
[mpeg2video @ 0xb72283a8]00 motion_type at 7 29
[mpeg2video @ 0xb72283a8]ac-tex damaged at 5 30
[mpeg2video @ 0xb72283a8]00 motion_type at 5 31
[mpeg2video @ 0xb72283a8]ac-tex damaged at 27 32
[mpeg2video @ 0xb72283a8]00 motion_type at 5 33
[mpeg2video @ 0xb72283a8]00 motion_type at 5 34
[mpeg2video @ 0xb72283a8]00 motion_type at 12 35
2007-11-20 20:35:01.578 TVRec(2): RingBufferChanged()
2007-11-20 20:35:01.615 Finished recording 20 to 1: channel 1009


the frontend log shows
Code:
2007-11-20 20:22:10.229 AFD: Opened codec 0x88d8d90, id(MPEG2VIDEO) type(Video)
[mpeg2video @ 0xb72513a8]invalid cbp at 2 33
[mpeg2video @ 0xb72513a8]Warning MVs not available
2007-11-20 20:35:02.125 NVP: prebuffering pause
2007-11-20 20:35:03.756 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:05.377 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:06.998 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:08.619 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:10.240 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:11.861 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:13.481 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:15.109 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:16.729 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:18.349 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:19.969 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:21.589 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:23.209 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:24.829 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:26.449 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:28.069 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:29.688 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:31.308 NVP: Prebuffer wait timed out 10 times.
2007-11-20 20:35:32.928 NVP: Prebuffer wait timed out 10 times.


Any ideas?
Author:  manicmike [ Tue Nov 20, 2007 6:29 am ]
Post subject: 
nmcaullay wrote:
Any ideas?


It may be the Avermedia card: I vaguely recall my ex wife having a similar problem with that card, too. Switch to your non-aver card (y on your kb) and see what happens. The TV card seems like the most likely candidate.

Mike
Author:  nmcaullay [ Tue Nov 20, 2007 4:30 pm ]
Post subject: 
Morning,

Will do that, im sure i tried a combination of that last night, but i'll be more scientific this time...

Also, I rebooted last night, and "beckham" on livetv was watched, and ran over transition fine... then the next epg transition went bung...

Alternatively, I might try pausing for 10s, then seeing if the BE gets the next show to disk in time for the FE? Worth a shot?

Nathan
Author:  nmcaullay [ Wed Nov 21, 2007 6:03 am ]
Post subject: 
ok,

This is what ive done today
1) Ran the script to download from svn
http://mysettopbox.tv/phpBB2/viewtopic.php?t=11985&postdays=0&postorder=asc&start=90
2) Hit some bumps, including v4l-dvb support
3) Couldnt get myth to compile with dvb support
4) Tried the "tips" at the following URL to get DVB happeinng
http://mysettopbox.tv/phpBB2/viewtopic.php?t=16434
5) Recompiled, took ages, no complaints.. still mythbackend complained about no DVB support...

said stuff this, its coming up to recording time in the evening (WAF factor is important), so grabbed my trusty R5F27 CD, did a backup, and ran an upgrade...

all went swimmingly as usual, apart from
1) mythwelcome funny business in the initial stages, seeming to power down the PC when doing the config
2) the default theme being too large for my screen, so ran this script to select one that worked
http://mysettopbox.tv/phpBB2/viewtopic.php?t=8856&highlight=setting+theme+command

Also, mike, appears that the problem of program transitions was fixed by auto upgrading R5F27 -> R5F27... wierd, but its going ok at the minute...

So, some lessons learnt from todays endeavours.... dont underestimate the effort and skill that the KM contributors put in. I tried for 3 hours to get myth compiled, still no success.

Hats off to cecil and his band of scripters/testers... it aint easy work.

Cheers,

Nathan
Author:  manicmike [ Wed Nov 21, 2007 6:04 pm ]
Post subject: 
nmcaullay wrote:
Also, mike, appears that the problem of program transitions was fixed by auto upgrading R5F27 -> R5F27... wierd, but its going ok at the minute...


Excellent. Must have been some other oddity working its way in.

Cheers

Mike
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