Parameter -wss will mean Windows Sound System and from ISA sound cards I
have only OPTi sound card that supports it (
https://www.vogons.org/viewtopic.php?t=70060). Sound Blaster cards do not
implement WSS by default. So I would not say it works in DOS. It needs to
work through Allegro framework in order to be DOS compatible. OPTi sound
card has WSS driver for Windows 3.11 and up.

On Thu, Aug 12, 2021 at 7:50 PM Eric Auer <[email protected]> wrote:

>
> Hi!
>
> I have done a quick test with mpxplay and mplayer:
> Mpxplay works out of the box for mp3 files on my
> HDA hardware. With mplayer for DOS, the default
> "aulib" only uses one speaker, but "-ao wss" will
> select a driver which works in stereo. The option
> "-ao allegro" fails to produce sound. Also, the
> (only) VESA driver of mplayer fails to find MCGA
> style modes, so 320x200, 8 bpp FLI fail to play.
> Not sure which -vf or -vo could work this around?
>
> The bad news is that the mpxplay license is not
> open enough and there has been no reaction to a
> mail and a ticket by me about the issue. The used
> mplayer version also is, as far as I remember, one
> which have downloaded as pre-compiled binary, so I
> am not sure how well the official open source DOS
> version of mplayer works at the moment.
>
> Regards, Eric
>
>
>
>
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