AVI Files:
ffmpeg version N-36036-ga40f43d, Copyright (c) 2000-2011 the FFmpeg developers
built on Dec 22 2011 13:44:49 with gcc 4.6.2
configuration: --enable-memalign-hack --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/media/ffmpeg --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect --extra-cflags=-I/home/dennis/cc/include --extra-ldflags=-L/home/dennis/cc/lib --pkg-config=pkg-config --disable-w32threads
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 46. 1 / 53. 46. 1
libavformat 53. 27. 0 / 53. 27. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (8000000/166833) -> 23.98 (24000/1001)
Input #0, matroska,webm, from 'E:\ServerFolders\Videos\Blue.Planet.1080p.BluRay. x264-REQ\blue.planet.e01.repack.1080p.bluray.x264-req.mkv':
Duration: 00:48:03.50, start: 0.000000, bitrate: 11835 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p, 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), s16, 1536 kb/s (default)
Stream #0:2(eng): Subtitle: text
At least one output file must be specified


---> DB Level Info: 41, 100
---> Frame rate: 23.98
---> Aspect ratio: 16:9