[FFmpeg-user] DirectShow - Unrecognized option 'list_options'

[Marcos Felipe Rasia de Mello]

Hi,

I'm playing with the new DirectShow input device support and when I
query the supported options (following the man page example), ffmpeg
prints this

ffmpeg -list_options true -f dshow -i video="Lenovo EasyCamera"

ffmpeg version N-32611-gd55b06b, Copyright (c) 2000-2011 the FFmpeg developers
  built on Sep 15 2011 00:23:27 with gcc 4.6.1
  configuration: --enable-gpl --enable-version3
--enable-runtime-cpudetect --enable-avisynth --enable-bzlib
--enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libfreetype --enable-libgsm --enable-libmp3lame
--enable-libopenjpeg --enable-librtmp --enable-libschroedinger
--enable-libspeex --enable-libtheora --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil    51. 16. 0 / 51. 16. 0
  libavcodec   53. 14. 0 / 53. 14. 0
  libavformat  53. 12. 0 / 53. 12. 0
  libavdevice  53.  3. 0 / 53.  3. 0
  libavfilter   2. 40. 0 /  2. 40. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Unrecognized option 'list_options'
Failed to set value 'true' for option 'list_options'