Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

On Fri, 6 May 2005, David Moberg wrote:

> ----- Original Message -----
> From: "sindi keesan" <keesan AT sdf.lonestar.org>
>
> > > If you just want MPlayer to decode things for you, you can use
> > >
> > > mplayer -ao pcm
> > >
> > > which will dump the output to audiodump.wav which sox should be able
> > > to play.
> >
> > The above is because the most recently compiled mplayer does not
> > actually play sounds but it does make a .wav file.
>
> It does not play sounds with Linux 2.2.16 and Vibra16. Did you try
> this with any other sound cards? With ALSA, it works fine here.
>
> > But I cannot combine the two of them in a pipe (play complains if I
> > try).
>
> MPlayer's -aofile option appears to not be able to handle the "-"
> stdout synonym.
>
> > What can I do to play streaming mp3 or ram files without creating a
> > very large audiodump.wav?
>
> Try:
>
> mkfifo audiodump.wav
> mplayer -ao pcm http://(URL of streaming mp3) & play audiodump.wav & fg; fg


I tried various combinations (using the latest compiled mplayer, which now 
installs properly) and if I mkfifo audiodump.wav, mplayer does not seem to 
write anything to audiodump.wav (I have a 0 file) though it says something 
about filling a cache.

If I just type in the part before the & and then play audiodump.wav (which 
I did now) it plays just fine but my file keeps getting larger.  I will 
try this on realaudio some time.  We are going to work on the 600 and 
750MHz models now instead.

I started the play only about 30 sec after I started mplayer, and it is 
still playing a few minutes later, so as long as I have lots of free hard 
drive space I will be okay, but wav files are large.  I am already at 
18MB in 5 minutes.  60 minutes would be 200MB.  I suppose I could delete 
and restart at the end of each piece.

I see at the end of the screen:

Starting playback...
mpg123:  Can't rewind stream by 62 bits!
A:  5:40.2 (the time?) 93.5% 0%


But ps says I am using sox, not mpg123.


I will try this on a realaudio file next (same URL harvesting technique as 
for mp3 files).

Sindi