[mythtvnz] Audio question and video pixelation question

[Nick Rout]

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?

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)

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.)

4. mythfrontend has various logging options. run mythfrontend -a help
to see the options.