[mythtv-users] DVB-T problems with sound

Ashley Bostock abostock at gmail.com
Fri Jun 10 10:20:50 UTC 2005


> 2005-06-09 11:58:03.814 DVB#0 Recorder: Card opened successfully (using PS
> mode)

Try changing myth to record in TS mode instead of PS, this should
better deal with errors in the dvb stream.
Run mythsetup and its under the options for your dvb card.

On 6/10/05, Nick Tan <nick at wehi.edu.au> wrote:
> Hi All,
> 
> I have a Pentium 4 celeron 2.4Ghz system with 512mb ram running Fedora 3
> and Myth 0.18.1.  I have a PVR-250MCE recording via s-video from an
> external cable tuner, and a KWorld V-Stream Xpert DVB-T connected to an
> external antenna (via a signal booster) recording terrestrial digital
> channels.  I'm running a custom compiled 2.6.11.11 kernel patched with
> drivers from video4linux.  TV-out is via svideo from an Nvidia 5200, and
> audio is using a SBLive value through the digital output to an amplifier.
> 
> Its all working great except for one thing.  On the DVB recordings, on
> occasion the picture and sound will break up for a second at the most, and
> then it'll continue on as normal.  I'm guessing its just errors in the
> signal, or a low signal strength.  However, on a few occasions the picture
> will come back but the audio disappears.
> 
> I don't see any errors in the logs, so I'm wondering if anyone else has
> seen this problem and if there's a resolution for it.
> 
> This is an example of a capture log from mythbackend, from yesterday's
> showing of Dr Phil:
> 
> 2005-06-09 11:58:01.946 Started recording "Dr. Phil" on channel: 2018 on
> cardid:
>  2, sourceid 2
> 2005-06-09 11:58:02.461 DVB#0 DVB signal 13c4 | snr c6c6 | ber    0 | unc
> ffff
> 2005-06-09 11:58:02.492 DVB#0 Status: LOCK.
> 2005-06-09 11:58:02.493 DVB#0 Multiplex Locked
> 2005-06-09 11:58:03.605 DVB#0 Successfully tuned to channel 900.
> 2005-06-09 11:58:03.705 Changing from None to RecordingOnly
> 2005-06-09 11:58:03.814 DVB#0 Recorder: Card opened successfully (using PS
> mode)
> .
> 2005-06-09 11:58:03.823 DVB#0 Data read from DMX - This is for debugging
> with tr
> ansform.c
> 2005-06-09 13:07:00.002 Finished recording Dr. Phil on channel: 2018
> 
> The DVB kernel modules I'm using are cx88xx, cx8800, cx8802 and cx88-dvb
> 
> Thanks,
> 
> Nick
> 
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