Format m4v: Could not find codec parameters (Video: mpeg4)
http://trailers.apple.com/movies/independent/thedetails/details-tlr1_a720p.m4v
ffmpeg version N-42368-gbf53863 Copyright (c) 2000-2012 the FFmpeg developers
built on Jul 10 2012 03:40:45 with gcc 4.6.3
configuration: --enable-static --disable-shared --disable-ffplay --disable-ffserver --enable-memalign-hack --enable-libmp3lame --enable-librtmp --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm' --arch=x86 --enable-runtime-cpudetect --enable-pthreads --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --pkg-config=pkg-config
libavutil 51. 64.100 / 51. 64.100
libavcodec 54. 33.100 / 54. 33.100
libavformat 54. 15.102 / 54. 15.102
libavdevice 54. 1.100 / 54. 1.100
libavfilter 3. 1.100 / 3. 1.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 15.100 / 0. 15.100
[m4v @ 0182CD60] Format m4v detected only with low score of 1, misdetection possible!
[mpeg4 @ 0182F4A0] header damaged
[m4v @ 0182CD60] decoding for stream 0 failed
[m4v @ 0182CD60] Could not find codec parameters (Video: mpeg4, yuv420p)
[m4v @ 0182CD60] Estimating duration from bitrate, this may be inaccurate
http://trailers.apple.com/movies/independent/thedetails/details-tlr1_a720p.m4v:could not find codec parameters