This is an *unofficial* FFmpeg Win32 build made by tripp. built with mingw 4.2.4 core & gcc from TDM. patched for ogm remux. These files were originally hosted at: http://tripp.arrozcru.com/ The source code they were built with is also available. FFmpeg revision number: 18639 FFmpeg license: GPL Extra libraries included: x264 SVN r1139 http://developers.videolan.org/x264.html libfaac 1.26 http://www.audiocoding.com/ libfaad2 2.6.1 http://www.audiocoding.com/ libmp3lame 3.98-2 http://www.mp3dev.org/ libvorbis 1.2 http://www.xiph.org/ libtheora 1.0 http://www.xiph.org/ xvidcore cvs 21/04 http://www.xvid.org/ libgsm 1.0.12 http://kbs.cs.tu-berlin.de/~jutta/toast.html pthreads-win32 2.8.0 ftp://sources.redhat.com/pub/pthreads-win32 If you experience any other problems with this build, try please reporting them to: http://ffmpeg.arrozcru.com/forum/ you can use presets under windows but use a full path to the preset, -vpre "complete path\whaterver.ffpreset" or if the preset file is in the same directory as ffmpeg -vpre "./whaterver.ffpreset" e.g ffmpeg -i input.avi -vcodec libx264 -vpre "path/libx264-max.ffpreset" out.mp4