[mythtvnz] audio pauses latm-aac

[Brett]

On Wed, 2012-04-04 at 07:39 +1200, Paul Kendall wrote:
> On Tue, Apr 3, 2012 at 5:45 PM, Brett <mythicalbeast at slingshot.co.nz> wrote:
> > Anybody else getting occasional audio pauses/silence (1/2 to 3 sec long
> > at a rate of 2-5 times an hour) with recording from Prime dvb-t over the
> > last 2-3 weeks?
> >
> 
> Now that you mention it, I did notice this in 'Mayday' that I watched
> and was recorded on Prime.
> I'll check my next recording from Prime and see if it happens again.
> 
> > Both 0.24+fixes & 0.25 (2 weeks old) show this problem.
> >
> > Transcoding latm to AAC (libfacc) with latest ffmpeg plays fine , so
> > does ancient VLC 1.0.6.
> >
> 
> If it transcodes correctly then it may be that our ALSA buffer is set
> slightly too small.
> Perhaps prime has moved from stereo to 5.1 sound and now the buffers
> are sometimes
> a little too small.
> 
> I'll check tonight and again when Mayday records on Sunday night.
> 
> Cheers,
> Paul
> 

I tried
echo 512 | sudo tee /proc/asound/card0/pcm1p/sub0/prealloc
and other much larger numbers; made no difference.
Is this the same buffer you refer ?

mediainfo reports typical Prime as:
04/04/2012 as 2 ch HE-AAC/LC max 99Kbps
05/01/2012 much the same...

Thanks,
Brett