[MPlayer-dev-eng] audio out feature (not a request) NOVIRUS

[William Man]

Yes.  However, I am doing a 24hr recording, and i think my hd will collapse 
before the whole pcm file is streamed.

I have sucessfully done it using pipes and lame, but I wanted to make a 
windows version that doesn't support piping.  A hacky solution I have 
managed to do is make mplayer output pcm to stdout, then lame can encode 
using stdin, but windows inserts 2 chars for a return carriage which 
corrupts the stream.  So the solutions are
1) Fix memcoder
2) Make a mplayer with mp3 ao module.

I haven't looked at mencoder, but 2) is partially done pending some 
debugging.

I just wondered what the best option is.

W

>From: Corey Hickey <bugfood-ml at fatooh.org>
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>To: mplayer-dev-eng at mplayerhq.hu
>Subject: Re: [MPlayer-dev-eng] audio out feature (not a request)
>Date: Mon, 13 Jun 2005 12:21:22 -0700
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>
>William Man wrote:
> > Hi,
> >
> > I wanted to ask if there exists a audio out for mp3?  This allows 
>real-time
> > encoding of mp3 from live streams.
> >
> > I could not find any reference in the source from the website, so I 
>compiled
> > myself a version to do this, and can be used like "mplayer inputsource 
>-ao
> > mp3:file=save.mp3:bitrate=128", it still requires some debugging but it
> > works (currently only a windows version as it links to the lame_enc.dll)
> >
> > However, I was thinking of using the current lame encoding in mencoder 
>to
> > generate a mp3 output for mplayer so the encoding is compiled into 
>mplayer
> > (and not use any libraries).  Does it already exist and I'm wasting my 
>time,
> > or is there any reason it isn't implemented (legal or otherwise).
> >
> > Thanks for any replies.
> >
> > William
> >
>
>MPlayer has PCM output. Though an internal mp3 encoder could be a bit
>more efficient, using PCM as an intermediate format is much more
>versatile. You can just use lame, or oggenc, or probably just about any
>other audio encoder you want.
>
>I don't know if windows has anything like named pipes, but on a unix
>system you can skip the intermediate file.
>
>$ mkfifo audiodump.wav
>$ lame audiodump.wav output.mp3
>
>lame will sit there waiting for data; go to another terminal, and:
>
>$ mplayer some-file-or-url -ao pcm
>
>-Corey
>
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