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1- Download the binary for ffmpeg ---> http://ffmpegmac.net/
2- Install the binary somewhere on your computer (I put it in /opt/local/binary_downloads ):
3- To convert the mkv file from the command line, just run this command:
$ /opt/local/binary_downloads/ffmpeg -i sample.mkv -vcodec copy -acodec copy sample.m4v
ffmpeg version 1.0.1 Copyright (c) 2000-2012 the FFmpeg developers
built on Dec 7 2012 09:31:51 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --arch=x86_64 --enable-runtime-cpudetect
libavutil 51. 73.101 / 51. 73.101
libavcodec 54. 59.100 / 54. 59.100
libavformat 54. 29.104 / 54. 29.104
libavdevice 54. 2.101 / 54. 2.101
libavfilter 3. 17.100 / 3. 17.100
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, matroska,webm, from 'sample.mkv':
Metadata:
creation_time : 1970-01-01 00:00:02
Duration: 00:02:16.85, start: 0.000000, bitrate: 1935 kb/s
Stream #0:0(eng): Video: h264 (Main), yuv420p, 720x304, SAR 1:1 DAR 45:19, 23.98 fps, 23.98 tbr, 1k tbn, 180k tbc (default)
Stream #0:1(eng): Audio: aac, 48000 Hz, stereo, s16 (default)
Output #0, ipod, to 'sample.m4v':
Metadata:
encoder : Lavf54.29.104
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 720x304 [SAR 1:1 DAR 45:19], q=2-31, 23.98 fps, 1k tbn, 1k tbc (default)
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo (default)
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[ipod @ 0x7fc6c18f0e00] st:0 PTS: 67 DTS: -83 < -82 invalid, clipping
frame= 4101 fps=0.0 q=-1.0 Lsize= 32485kB time=00:02:16.84 bitrate=1944.6kbits/s
video:29531kB audio:2758kB subtitle:0 global headers:0kB muxing overhead 0.603822%
4- I wrote a script to do this:
#!/bin/bash echo $1 NAME=`echo $1| rev | cut -d. -f2- |rev` echo $NAME /opt/local/binary_downloads/ffmpeg -i $NAME.mkv -vcodec copy -acodec copy $NAME.m4v
