[MPlayer-users] Selecting the audio device in OS/X

[Zak Mc Kracken]

Maybe my QI is less than I supposed and I'm stuck with something 
trivial, despite my being a seasoned software developer...

Anyway, I had already tried many variants one could think of, like 
coreaudio:help, coreaudio:device_id=help coreaudio:device_id=list 
coreaudio:list. And yes, adding the mandatory file parameter (by the 
way, the command line parser should not require that when I'm just 
passing the help/list option; if it does it, I think it's a minor bug).

Nothing helps, it seems to just ignore any device option whatsoever, in 
fact, even if I type 'mplayer -ao coreaudio:damnyou file.mp3', it just 
plays the file...

Thanks again.
Marco.



On 09/02/2012 01:19, Christian Ebert wrote:
> * towb at gmx.net on Wednesday, February 08, 2012 at 23:21:39 +0100
>> On 08.02.2012, at 17:06, Christian Ebert wrote:
>>>> mplayer -ao coreaudio:device_id=list
>>>
>>> Only this errors out:
>>
>> mplayer always needs something to play, even when you just want some auxiliary output, which is what the printout tells you. Maybe I should have written:
>>
>> mplayer -ao coreaudio:device_id=list xy.mp4
>>
>> which works fine for me with USB audio devices.
>
> Ok, except that mplayer -ao coreaudio:help xy.mp4 works more or
> less according to the man page without error, device_id=list
> spits out:
>
> Could not parse arguments at the position indicated below:
> device_id=list
>            ^
>
> -ao coreaudio commandline help:
> Example: mplayer -ao coreaudio:device_id=266
>      open Core Audio with output device ID 266.
>
> Options:
>      device_id
>          ID of output device to use (0 = default device)
>      help
>          This help including list of available devices.
>
> Available output devices:
> Built-in Microphone (id: 260)
> Built-in Input (id: 258)
> Built-in Output (id: 262)
>
> Failed to initialize audio driver 'coreaudio:device_id=list'
> Could not open/initialize audio device ->  no sound.
> Audio: no sound
> Video: no video
>
>
> I would expect
> $ mplayer -ao coreaudio:help
> to work similar to
> $ mplayer -ao help
>
>
> c