doc: fill documentation for vfwcap

Originally committed as revision 25553 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc: fill documentation for vfwcap
Originally committed as revision 25553 to svn://svn.ffmpeg.org/ffmpeg/trunk
fbd4a07d · Ramiro Polla · 1973e101 · fbd4a07d
Commit fbd4a07d authored Oct 23, 2010 by Ramiro Polla
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indevs.texi doc/indevs.texi +4 -0

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@@ -167,6 +167,10 @@ ffmpeg -f video4linux2 -i /dev/video0 out.mpeg

 VfW (Video for Windows) capture input device.

+The filename passed as input is the capture driver number, ranging from
+0 to 9. You may use "list" as filename to print a list of drivers. Any
+other filename will be interpreted as device number 0.
+
 @section x11grab

 X11 video input device.