[MPlayer-DOCS] [PATCH] new FAQ item: audio-only encoding

[Dominik 'Rathann' Mierzejewski]

On Thursday, 25 November 2004 at 00:27, Nico Sabbi wrote:
[...]
> >+<qandaentry>
> >+<question><para>
> >+How do I encode only sound from a music video?
> >+</para></question>
> >+<answer><para>
> >+It's not possible directly, but you can try this:
> >+<screen>
> >+    mencoder -ovc frameno -oac mp3lame -lameopts your_opts -o music.avi 
> >dvd://1
> >+    mplayer -dumpaudio -dumpfile music.mp3 music.avi
> >+    rm music.avi
> >+</screen>
> 
> this doesn't save  pure audio: it contains the infamous (when will make 
> it optional?)
> 4 bytes before every packet. In the case of mp2/mp3 -dumpaudio works as 
> expected
> if you add -of mpeg, though

OK, then how about this:

-- 
MPlayer RPMs maintainer: http://greysector.rangers.eu.org/mplayer/
"I am Grey. I stand between the candle and the star. We are Grey.
 We stand between the darkness ... and the light."
        -- Delenn in Grey Council in Babylon 5:"Babylon Squared"
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Index: faq.xml
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/xml/en/faq.xml,v
retrieving revision 1.53
diff -u -r1.53 faq.xml
--- faq.xml	24 Nov 2004 11:23:21 -0000	1.53
+++ faq.xml	25 Nov 2004 00:09:43 -0000
@@ -1439,6 +1439,23 @@
 </para></answer>
 </qandaentry>
 
+<qandaentry>
+<question><para>
+How do I encode only sound from a music video?
+</para></question>
+<answer><para>
+It's not possible directly, but you can try this:
+<screen>
+    mkfifo encode
+    mplayer -oac pcm -aofile encode dvd://1 &amp;
+    lame your_opts encode music.mp3
+    rm encode
+</screen>
+It allows you to use any encoder, not only <application>LAME</application>,
+just replace it in the above command with your favourite audio encoder.
+</para></answer>
+</qandaentry>
+
 </qandadiv>
 </qandaset>