Re: [LAU] jack weirdness, and -verbose doesn't help

From: Eric Steinberg <eric.steinberg@email-addr-hidden>
Date: Tue Jul 19 2011 - 02:43:58 EEST

No, Rotter splits the files at one hour. Average file size is about 52
megabytes. This is, incidentally, the only way I can tell that the signal
chain is hosed/fubar- it starts writing files of 800k or so.

On Mon, Jul 18, 2011 at 4:27 PM, Bob van der Poel <bob@email-addr-hidden> wrote:

> There is a limit to the size of a wav file. Are you writing a file too
> large after the time period?
>
> On Mon, Jul 18, 2011 at 4:02 PM, Eric Steinberg
> <eric.steinberg@email-addr-hidden> wrote:
> > Hi all,
> > I'm trying to build an audio logger- a machine to record audio that can
> stay
> > running all the time. I've been attempting to use Rotter and Jack for
> this,
> > but I'm getting the same problems across a variety of distros (Arch,
> Ubuntu,
> > Ubuntu Studio, CentOs &c.). I'm using an Edirol FA-101, attached to a P4
> > 3ghz machine with a second SATA drive as an audio recording volume. I
> > launch jack, with a big period so as to avoid xruns:
> > jackd -v -d firewire -r 44100 -n 3 -p 4096 2> jack_stderr.log >
> > jack_stdout.log &
> > Then I launch multiple instances of Rotter, one per channel, six total:
> > rotter -f flac -c 1 -n channelone -d 500 -L flat -v
> > /secondsatadrive/channelone
> > .
> > .
> > .
> > rotter -f flac -c 1 -n channelsix -d 500 -L flat -v
> > /secondsatadrive/channelsix
> > Then I launch esjit and patch physical input one to rotter instance
> > channelone, etc.
> > This works, for a while. Jackd still gets xruns, but the recording
> happens
> > and files are written properly. However, after several hours and a whole
> > lot of xruns, it stops working. Files are still written and named
> properly,
> > but they are only a few hundred k in size and contain no audio. The
> error
> > logs show the xruns, but nothing else (no error messages, except for
> xruns).
> > The output of Rotter also does not show anything wrong. Clearly, jackd
> is
> > breaking somehow; anyone have clues? Any way to get more info from
> jackd?
> > What am I doing wrong? This problem is the same across several distros
> > (see above), and occurs whether or not I use the -R realtime flag.
> > _______________________________________________
> > Linux-audio-user mailing list
> > Linux-audio-user@email-addr-hidden
> > http://lists.linuxaudio.org/listinfo/linux-audio-user
> >
> >
>
>
>
> --
> **** Listen to my CD at http://www.mellowood.ca/music/cedars ****
> Bob van der Poel ** Wynndel, British Columbia, CANADA **
> EMAIL: bob@email-addr-hidden
> WWW: http://www.mellowood.ca
>

_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/listinfo/linux-audio-user
Received on Tue Jul 19 04:15:02 2011

This archive was generated by hypermail 2.1.8 : Tue Jul 19 2011 - 04:15:03 EEST