I try to test. $ ffmpeg -i mjpeg.hex -vcodec copy mjpeg.mp4 ffmpeg version N-66318-g85f2c01 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 18 2014 00:12:17 with gcc 4.9.1 (GCC) configuration: --enable-gpl --enable-version3 --enable-avisynth --enable-fontconfig --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcaca --enable-libcdio --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libvidstab --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libilbc --enable-libxavs --enable-opengl --enable-libwebp --enable-avresample --enable-w32threads --extra-ldflags=-static --extra-cflags='-march=i686 -mtune=generic -mfpmath=sse -msse' --optflags='-O2 -finline-functions' libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 1.100 / 56. 1.100 libavformat 56. 4.102 / 56. 4.102 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 1.101 / 5. 1.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 [mjpeg @ 005372c0] Format mjpeg detected only with low score of 25, misdetection possible! Input #0, mjpeg, from 'mjpeg.hex': Duration: N/A, bitrate: N/A Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg), 1280x720 [SAR 1:1 DAR 16:9 ], 25 tbr, 1200k tbn, 25 tbc Output #0, mp4, to 'mjpeg.mp4': Metadata: encoder : Lavf56.4.102 Stream #0:0: Video: mjpeg (l[0][0][0] / 0x006C), yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1200k tbn, 1200k tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help frame= 163 fps=0.0 q=-1.0 Lsize= 13551kB time=00:00:06.48 bitrate=17130.7kbit s/s video:13549kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.010840%
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