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Re: audio pauses latm-aac
 

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mythicalbeast at slingshot

Apr 4, 2012, 2:29 AM


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Re: audio pauses latm-aac [In reply to]

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> 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


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Subject User Time
audio pauses latm-aac mythicalbeast at slingshot Apr 2, 2012, 10:45 PM
    Re: audio pauses latm-aac paulgir at gmail Apr 3, 2012, 11:42 AM
    Re: audio pauses latm-aac mike.brady at devnull Apr 3, 2012, 11:46 AM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 3, 2012, 12:39 PM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 4, 2012, 2:29 AM
        Re: audio pauses latm-aac pkendall64 at gmail Apr 4, 2012, 12:46 PM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 4, 2012, 11:02 PM
        Re: audio pauses latm-aac jyavenard at gmail Apr 4, 2012, 11:46 PM
        Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 1:25 AM
            Re: audio pauses latm-aac g8ecj at gilks Apr 5, 2012, 1:47 AM
    Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 12:57 AM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 1:29 AM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 3:16 AM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 2:09 PM
        Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 3:24 PM
    Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 3:26 PM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 4:08 PM
        Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 5:10 PM
            Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 6:03 PM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 5, 2012, 4:19 PM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 5, 2012, 5:34 PM
    Re: audio pauses latm-aac mythicalbeast at slingshot Apr 5, 2012, 6:20 PM
        Re: audio pauses latm-aac pkendall64 at gmail Apr 5, 2012, 6:43 PM
    Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 7:48 PM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 5, 2012, 8:02 PM
    Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 8:10 PM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 5, 2012, 8:13 PM
    Re: audio pauses latm-aac jyavenard at gmail Apr 5, 2012, 8:15 PM
    Re: audio pauses latm-aac g8ecj at gilks Apr 5, 2012, 10:50 PM
    Re: audio pauses latm-aac nick.rout at gmail Apr 5, 2012, 11:13 PM
    Re: audio pauses latm-aac nick.rout at gmail Apr 6, 2012, 1:43 PM
    Re: audio pauses latm-aac pkendall64 at gmail Apr 6, 2012, 2:03 PM
    Re: audio pauses latm-aac ross at inertia Apr 17, 2012, 3:27 AM

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