[mythtvnz] Audio question and video pixelation question

[Paulgir]

On Sat, 28 Jan 2012 18:15:12 +1300, Nick Rout <nick.rout at gmail.com> wrote:

> On Sat, Jan 28, 2012 at 12:53 PM, Paulgir <paulgir at gmail.com> wrote:
>> I've been getting familiar with operating my mythbox.I don't appear to  
>> have
>> any major
>> problems,but I do have a couple of questions the list members may be  
>> able to
>> help with.
>>
>> 1. When watching live TV or recordings,the audio seems to default to  
>> English
>> AC3 5.1 ch
>> (I get that message briefly when I select a new channel).I can select
>> English
>> AAC-LATM 2 ch with the <-> key.I can actually  also select Italian  
>> AAC-LATM
>> 2CH
>> on some channels although this is in English too.
>
> I dunno why it is labelled Italian, I get that audio stream in my
> recordings too!
>
>> The AAC-LATM sounds better through my sound system - correct level,full
>> stereo.
>> AC3 5.1 ch doesn't come through well.
>>
>> Is there somewhere I can set the default to English AAC-LATM?
>>
>> 2. I get brief periods (up to 30 secs) where the video gets  
>> progressively
>> more pixelated
>> and distorted,sometimes freezing,sometimes associated with audio  
>> distortion.
>> I suspect this is due to poor signal (DVB-T) as I am 55km from the
>> transmitter.
>> signal strength is usually around 80% to 95%
>> I'm planning to put up a hi gain antenna.
>>
>
> Your analysis sounds right, but to confirm:
>
> 1. does it repeat on the same spot each time you play the file?
> Yes it does - sometimes the degree of the effect varies but not by much.

> 2. what playback profile are you using? (I seem to recall you have
> vdpau capable hardware, but I am not going through the archive to
> check)
    I have enabled vdpau.the card is a GT430
>
> 3. What do the logs say during the glitch (hint, ssh in from a laptop
> hile watching. on the laptop run tail -f
> /var/log/mythtv/mythfrontend.log. The log file will scroll past as
> playback occurs, see if you can isolate any error messages that
> coincide with the glitches.)
    This is a bit beyond my abilities at the moment but I will see if I can  
work it out.

>
> 4. mythfrontend has various logging options. run mythfrontend -a help
> to see the options.
    I will try this and post the results later.
>
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Thanks for the tips

Cheers