[alsa-devel] question about webcam audio capture

Clemens Ladisch clemens at ladisch.de
Mon Sep 9 22:22:57 CEST 2013

vichy wrote:
> 2013/9/9 Clemens Ladisch <clemens at ladisch.de>:
>> vichy wrote:
>>> I try to do webcam audio capture on my arm platform.
>>> when I execute audio capture I got below message
>>> "retire_capture_urb: 108 callbacks suppressed"
>> This means that the retire_capture_urb() function printed lots of
>> messages, and that 108 of them were thrown away because they were
>> identical.
> Does that mean:
> 1. 108 of messages are the same and through away

No, that at least 109 are the same.

>> You have to look at the previous line to get the actual
>> message.
> Would you please tell me what the "previous line to get the actual
> message"  you mean?

The previous line in the message log.

> tinycap record.wav -D 0 -d 0 -c 2 -r 32000

Try increasng -n or -p.

Does recoding on a PC with the same parameters work?


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