From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: arecord - bug with big file?
Date: Mon, 05 May 2014 11:46:54 +0200
Message-ID: <53675E0E.2060303@ladisch.de>
References: <5366A35F.4040308@gmail.com>
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To: korgman <korgie@gmail.com>, alsa-devel@alsa-project.org
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korgman wrote:
> I can't record with arecord for long periods.
>
> time arecord -f dat -D hw:0,0 | aplay
> Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
> Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
>
> real    186m25.375s

This is the time needed for 2^31 bytes.  Stopping recording after that
is a feature because .wav files (as supported by arecord) have a 2 GB
limit.  When recording to a file, it would be possible to create
multiple files, but this is not possible with stdout.

Use "-t raw" to avoid the .wav restrictions.  (This requires you to
tell aplay about the format.)


Regards,
Clemens