[mythtv-users] Skipping video with DVB-T

[Scammell, David]

Look at this thread in the archive:

RE: [mythtv-users] Re: Nova-T ac-tex damaged etc.

UDMA to the disk needs to be working okay, try hdparm -t /dev/hda (or
whichever drive has the video data) and check your throughput if <20M/s its
an _indication_ that there may be a udma issue. Also check dmesg.

Regards.


David Scammell

-----Original Message-----
From: Jon Dye [mailto:jon at pecorous.co.uk] 
Sent: 29 December 2003 10:16
To: Discussion about mythtv
Subject: Re: [mythtv-users] Skipping video with DVB-T


Jon Dye wrote:
> I have recently got a Hauppauge Nova-T card which works perfectly when
> watching TV in mythtv but when I record something and then play it back 
> the video skips about every ten seconds.
[...]

I've found out a bit more about this now, the frontend outputs the 
message like the following:

2003-12-29 09:56:07 Changing from None to WatchingPreRecorded
[mpeg1video @ 0x8748338]concealing errors
[mpeg1video @ 0x8748338]Warning MVs not available
[mpeg1video @ 0x8748338]ac-tex damaged at 23 2
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 30
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 31
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 32
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 33
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 34
[mpeg1video @ 0x8748338]invalid mb type in I Frame at 0 35

the backend is logging:

2003-12-29 10:07:11 DVB#0 WARNING - Transport Stream Continuity Error.

at regular intervals while recording shows so I guess that is the 
problem although when watching LiveTV I get that message twice when 
watching starts and then not again.  Is there just less logging from 
LiveTV?  Does anyone know how I can stop this problem from occurring? 
Why does LiveTV cope better than recorded shows?

JD




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