[MPlayer-users] What output driver for USB DAC?

[John Long]

On Sun, 2018-02-04 at 12:56 +0100, Erik Auerswald wrote:
> Hi John,
> 
> On 02/04/2018 12:41 PM, John Long wrote:
> > On Sun, 2018-02-04 at 11:59 +0100, Erik Auerswald wrote:
> > > On 02/04/2018 09:32 AM, John Long wrote:
> > > > Does anybody know how to get mplayer to send the correct signal
> > > > to
> > > > a
> > > > USB DAC?
> > > 
> > > I've never done this and don't have that kind of device, so I
> > > cannot
> > > give you a definitive answer.
> > 
> > Thank you for the suggestions! I feel I am on the right track.
> > 
> > [...]
> 
>  >
> > I did see which output options are available but I couldn't figure
> > out
> > how to use them. I don't know where the doc is for all those (not
> > in
> > the mplayer man page)
> 
> Take a look at the section describing "-ao" in the MPlayer man page
> (it 
> starts with "AUDIO OUTPUT DRIVERS (MPLAYER ONLY)." It is online at:
> 
> http://mplayerhq.hu/DOCS/man/en/mplayer.1.html#AUDIO OUTPUT DRIVERS 
> (MPLAYER ONLY)

Thanks, I have been over that section of the manpage but I can't
understand it.

> 
> [sorry for the broken URL due to automatic line-wrapping of
> Thunderbird]
> [the URL above is one
> line                                             ]
> 
> To find out what ALSA devices I had available in my system I used
> "aplay 
> -l" ("aplay" is part of the package "alsa-utils" on Debian and
> Ubuntu).

Thanks, I saw that online when I was searching in the last couple of
weeks and it is very useful.

> 
> Please note that you may have PulseAudio interfering by hijacking
> calls 
> to ALSA. I used to use the Hi-Fi DAC via ALSA back before PulseAudio
> was 
> a thing...

Pulse audio is definitely running. I don't know how to send anything to
it from mplayer (seems to be using alsa) or how it interacts with
anything else. I am pretty lost...

/jl