FFmpeg Wrapper could not find the path to the FFmpeg binary

at http://drupal.org/node/690950 ifound this
Setup: Windows Server 2008 + IIS 7 + MySQL 5.1 + PHP 5.2

To make the ffmpeg thumbnailer function correctly you need to do a few things and make sure they are done properly;
1. ffmpeg.exe needs to be located at C:\ffmpeg\ffmpeg.exe <- copy this directory and paste it in the Video Converter Path setting
2. ffmpeg.exe is a command script, if you are on Windows like I am then go to your server C:\Windows\cmd.exe <- open Security and set permissions for Internet Guest Account (usually: IUSR_computername) to READ AND EXECUTE
3. Go to Site Config > File System > make sure the Temporary Directory gives * IIS_IUSRS READ AND EXECUTE PERMISSIONS * <- VERY IMPORTANT
4. If you still receive errors but the movie uploads and is playable you have permission problems, took me hours to figure this out.

so i do like that,
i put ffmpeg.exe at "C:\ffmpeg\ffmpeg.exe"
n at FFmpeg Wrapper Settings page , i set FFmpeg path to "C:\ffmpeg\ffmpeg.exe"
n i save this
so this error is solved
FFmpeg Wrapper could not find the path to the FFmpeg binary. You will need to set this by hand at: admin/settings/ffmpeg_wrapper

but in About FFmpeg installation , i can't see the FFmpeg version info

i downloaded ffmpeg.exe from http://ffmpeg.arrozcru.org/autobuilds

please help me......

at FFmpeg Wrapper Settings page , i set FFmpeg path to "C:/ffmpeg/ffmpeg.exe" instead of "C:\ffmpeg\ffmpeg.exe"
n now i can see the FFmpeg version info
like this
FFmpeg version:
FFmpeg version SVN-r25128, Copyright (c) 2000-2010 the FFmpeg developers built on Sep 16 2010 04:13:19 with gcc 4.4.2 configuration: --enable-gpl --enable-version3 --enable-libgsm --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-libvpx --arch=x86 --enable-runtime-cpudetect --enable-libxvid --enable-libx264 --extra-libs='-lx264 -lpthread' --enable-librtmp --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm' --target-os=mingw32 --enable-avisynth --cross-prefix=i686-mingw32- --cc='ccache i686-mingw32-gcc' --enable-memalign-hack libavutil 50.27. 0 / 50.27. 0 libavcore 0. 9. 0 / 0. 9. 0 libavcodec 52.89. 0 / 52.89. 0 libavformat 52.78. 5 / 52.78. 5 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.39. 0 / 1.39. 0 libswscale 0.11. 0 / 0.11. 0 Expected number for v but found: -v