[alsa-devel] Confused about 'default' device
rene.herman at keyaccess.nl
Wed Oct 24 14:35:47 CEST 2007
On 10/24/2007 01:37 PM, Clemens Ladisch wrote:
> Takashi Iwai wrote:
>> Timur Tabi wrote:
>>> I'm having a hard time understand when ALSA does sample rate and format
>>> conversion, and when it doesn't.
>>> When I issue the following command:
>>> mplayer -ao alsa filename.mov -v
>>> I get this output:
>>> alsa-init: using device default
>>> alsa-init: format s24le are not supported by hardware
>>> I was under the impression that ALSA can do format and sample rate conversion if
>>> necessary, but I guess that's not always the case.
>> It does. mplayer seems to try first the hardware device without
>> conversion and falls back to "default" PCM.
> In this case, it uses only the "default" PCM device. There seems to be
> some problem with its definition.
> Are there any definitions in ~/.asoundrc or /etc/asound.conf? If not,
> what driver is used, and does it have a file in /usr/share/alsa/cards/?
Just in case you guys missed it -- he posted:
alsa-init: using ALSA 1.0.8
Isn't 1.0.8 from before ALSA did any mixing by default?
More information about the Alsa-devel