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    Les exemples cités ci-dessous sont des éléments représentatifs d’usages spécifiques de MediaSPIP pour certains projets.
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    13 avril 2011, par

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Sur d’autres sites (5395)

  • Audio HLS with metadata on Mac from directory of mp3 files ?

    2 février 2017, par eagspoo

    I’m trying to create HLS output (m3u8 file + many .ts files) from a list of mp3 files where the mp3 id3 metadata is preserved in the HLS output.

    I’ve been trying ffmpeg like this :

    ffmpeg -f concat -i list.txt -hls_init_time 2 -hls_time 2 out.m3u8

    where list.txt contains :

    file 01.mp3
    file 02.mp3
    file 03.mp3
    file 04.mp3
    file 05.mp3
    file 06.mp3
    file 07.mp3
    file 08.mp3
    file 09.mp3
    file 10.mp3

    The result is a single out.m3u8 file and a single very large out0.ts file. I was expecting about 1500 ts files and an m3u8 file that contains the last 5 ts files.

    I’m completely new to ffmpeg and honestly I don’t want to learn it in depth right now.

    Does anyone know how to do this either with ffmpeg or otherwise ?

    ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
     built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
     libavutil      55. 34.100 / 55. 34.100
     libavcodec     57. 64.101 / 57. 64.101
     libavformat    57. 56.100 / 57. 56.100
     libavdevice    57.  1.100 / 57.  1.100
     libavfilter     6. 65.100 /  6. 65.100
     libavresample   3.  1.  0 /  3.  1.  0
     libswscale      4.  2.100 /  4.  2.100
     libswresample   2.  3.100 /  2.  3.100
     libpostproc    54.  1.100 / 54.  1.100
    Input #0, concat, from 'list.txt':
     Duration: N/A, start: -0.025056, bitrate: 238 kb/s
       Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 238 kb/s
       Metadata:
         encoder         : LAME3.99r
       Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 700x700 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
       Metadata:
         title           : cover
         comment         : Cover (front)
    [hls @ 0x7fc50f01aa00] Frame rate very high for a muxer not efficiently supporting it.
    Please consider specifying a lower framerate, a different muxer or -vsync 2
    No pixel format specified, yuvj444p for H.264 encoding chosen.
    Use -pix_fmt yuv420p for compatibility with outdated media players.
    [libx264 @ 0x7fc50f00dc00] using SAR=1/1
    [libx264 @ 0x7fc50f00dc00] MB rate (174240000) > level limit (2073600)
    [libx264 @ 0x7fc50f00dc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    [libx264 @ 0x7fc50f00dc00] profile High 4:4:4 Predictive, level 5.2, 4:4:4 8-bit
    Output #0, hls, to 'out.m3u8':
     Metadata:
       encoder         : Lavf57.56.100
       Stream #0:0: Video: h264 (libx264), yuvj444p(pc), 700x700 [SAR 72:72 DAR 1:1], q=-1--1, 90k fps, 90k tbn, 90k tbc
       Metadata:
         title           : cover
         comment         : Cover (front)
         encoder         : Lavc57.64.101 libx264
       Side data:
         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
       Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s
       Metadata:
         encoder         : Lavc57.64.101 aac
    Stream mapping:
     Stream #0:1 -> #0:0 (mjpeg (native) -> h264 (libx264))
     Stream #0:0 -> #0:1 (mp3 (native) -> aac (native))
    Press [q] to stop, [?] for help
    frame= 2256 fps=389 q=33.0 size=N/A time=00:00:00.02 bitrate=N/A dup=2255 drop=0 speed=0.00422x    
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    frame= 2258 fps=170 q=33.0 size=N/A time=00:05:07.95 bitrate=N/A dup=2255 drop=0 speed=23.2x    
    frame= 2258 fps=164 q=33.0 size=N/A time=00:05:20.44 bitrate=N/A dup=2255 drop=0 speed=23.2x    
    frame= 2258 fps=158 q=33.0 size=N/A time=00:05:33.79 bitrate=N/A dup=2255 drop=0 speed=23.3x    
    frame= 2258 fps=153 q=33.0 size=N/A time=00:05:46.77 bitrate=N/A dup=2255 drop=0 speed=23.4x    
    frame= 2258 fps=148 q=33.0 size=N/A time=00:05:59.87 bitrate=N/A dup=2255 drop=0 speed=23.5x    
    frame= 2258 fps=143 q=33.0 size=N/A time=00:06:14.54 bitrate=N/A dup=2255 drop=0 speed=23.7x    
    frame= 2258 fps=138 q=33.0 size=N/A time=00:06:28.27 bitrate=N/A dup=2255 drop=0 speed=23.8x    
    frame= 2258 fps=134 q=33.0 size=N/A time=00:06:42.92 bitrate=N/A dup=2255 drop=0 speed=  24x    
    frame= 2258 fps=130 q=33.0 size=N/A time=00:06:56.57 bitrate=N/A dup=2255 drop=0 speed=24.1x    
    frame= 2258 fps=127 q=33.0 size=N/A time=00:07:10.16 bitrate=N/A dup=2255 drop=0 speed=24.2x    
    frame= 2258 fps=123 q=33.0 size=N/A time=00:07:25.04 bitrate=N/A dup=2255 drop=0 speed=24.3x    
    frame= 2258 fps=120 q=33.0 size=N/A time=00:07:39.41 bitrate=N/A dup=2255 drop=0 speed=24.4x    
    frame= 2258 fps=117 q=33.0 size=N/A time=00:07:55.57 bitrate=N/A dup=2255 drop=0 speed=24.6x    
    frame= 2258 fps=114 q=33.0 size=N/A time=00:08:12.64 bitrate=N/A dup=2255 drop=0 speed=24.9x    
    frame= 2258 fps=111 q=33.0 size=N/A time=00:08:30.24 bitrate=N/A dup=2255 drop=0 speed=25.1x    
    frame= 2259 fps=109 q=33.0 size=N/A time=00:08:46.00 bitrate=N/A dup=2255 drop=0 speed=25.3x    
    frame= 2259 fps=106 q=33.0 size=N/A time=00:09:03.14 bitrate=N/A dup=2255 drop=0 speed=25.5x    
    [aac @ 0x7fc50f00f400] Queue input is backward in time
    [hls @ 0x7fc50f01aa00] Non-monotonous DTS in output stream 0:1; previous: 49402501, current: 36948720; changing to 49402502. This may result in incorrect timestamps in the output file.

    ... about 25000 lines of this...

    frame= 2261 fps= 65 q=33.0 size=N/A time=00:09:08.93 bitrate=N/A dup=2255 drop=0 speed=15.8x    
    [hls @ 0x7fc50f01aa00] Non-monotonous DTS in output stream 0:1; previous: 49402502, current: 36950810; changing to 49402503. This may result in incorrect timestamps in the output file.
    [hls @ 0x7fc50f01aa00] Non-monotonous DTS in output stream 0:1; previous: 49408463, current: 49408084; changing to 49408464. This may result in incorrect timestamps in the output file.
    frame= 2261 fps= 59 q=33.0 size=N/A time=00:09:13.11 bitrate=N/A dup=2255 drop=0 speed=14.4x    
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    frame= 2265 fps= 36 q=33.0 size=N/A time=00:23:21.29 bitrate=N/A dup=2255 drop=0 speed=22.5x    
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    frame= 2265 fps= 35 q=33.0 size=N/A time=00:24:10.42 bitrate=N/A dup=2255 drop=0 speed=22.7x    
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    frame= 2265 fps= 35 q=33.0 size=N/A time=00:24:52.61 bitrate=N/A dup=2255 drop=0 speed=  23x    
    frame= 2265 fps= 35 q=-1.0 Lsize=N/A time=00:25:02.45 bitrate=N/A dup=2255 drop=0 speed=  23x    
    video:1482kB audio:33826kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    [libx264 @ 0x7fc50f00dc00] frame I:10    Avg QP:21.37  size:145718
    [libx264 @ 0x7fc50f00dc00] frame P:571   Avg QP:21.23  size:    31
    [libx264 @ 0x7fc50f00dc00] frame B:1684  Avg QP:30.33  size:    25
    [libx264 @ 0x7fc50f00dc00] consecutive B-frames:  0.8%  0.1%  0.0% 99.1%
    [libx264 @ 0x7fc50f00dc00] mb I  I16..4:  0.0% 98.3%  1.7%
    [libx264 @ 0x7fc50f00dc00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:100.0%
    [libx264 @ 0x7fc50f00dc00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%  L0: 0.0% L1:100.0% BI: 0.0%
    [libx264 @ 0x7fc50f00dc00] 8x8 transform intra:98.3% inter:100.0%
    [libx264 @ 0x7fc50f00dc00] coded y,u,v intra: 100.0% 70.2% 62.8% inter: 0.0% 0.0% 0.0%
    [libx264 @ 0x7fc50f00dc00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 18% 39%  5%  4%  4%  6%  6% 10%
    [libx264 @ 0x7fc50f00dc00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 12% 15%  9%  8% 10%  9%  9% 11%
    [libx264 @ 0x7fc50f00dc00] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x7fc50f00dc00] ref P L0: 11.6% 79.1%  9.3%
    [libx264 @ 0x7fc50f00dc00] ref B L1: 50.0% 50.0%
    [libx264 @ 0x7fc50f00dc00] kb/s:482409.22
    [aac @ 0x7fc50f00f400] Qavg: 491.256
  • ffmpeg mkv to mp4 including subtitles

    1er février 2017, par user3677559

    Want to convert mkv files to mp4 (h264, mp3 and subtitles). I checked the video files with ffprobe. For the output

    Stream #0:2(ger) : Subtitle : dvb_subtitle (default)

    The subtitles are included in the converted video with following ffmpeg command.

    ffmpeg -i movie.mkv -c:v libx264 -c:a libmp3lame  -b:a 320k -c:s dvd_subtitle  converted.mp4

    But for the output :

    Stream #0:3(ger) : Subtitle : subrip (default)

    The command isn’t working. There is no error message and the resulting video includes a subtitle stream, but no subtitles are showed. I tried also with the subtitle encoding mov_text and copy, but no luck. Following the output from console :

       ffmpeg version 3.2.2-1 Copyright (c) 2000-2016 the FFmpeg developers
     built with gcc 6.2.1 (Debian 6.2.1-5) 20161124
     configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-libopencv --enable-frei0r --enable-libx264 --enable-chromaprint --enable-shared
     WARNING: library configuration mismatch
     avcodec     configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-libopencv --enable-frei0r --enable-libx264 --enable-chromaprint --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-netcdf
     libavutil      55. 34.100 / 55. 34.100
     libavcodec     57. 64.101 / 57. 64.101
     libavformat    57. 56.100 / 57. 56.100
     libavdevice    57.  1.100 / 57.  1.100
     libavfilter     6. 65.100 /  6. 65.100
     libavresample   3.  1.  0 /  3.  1.  0
     libswscale      4.  2.100 /  4.  2.100
     libswresample   2.  3.100 /  2.  3.100
     libpostproc    54.  1.100 / 54.  1.100
    [mpeg2video @ 0x56335b2e1180] warning: first frame is no keyframe
    Input #0, matroska,webm, from 'movie.mkv':
     Metadata:
       title           : The Movie name
       encoder         : Tvheadend Matroska muxer
       DATE_BROADCASTED: 2014-08-17 20:14:20
       ORIGINAL_MEDIA_TYPE: TV
       TVCHANNEL       : a channel
       SUMMARY         : summary
       SUMMARY-ger     : summary
       DESCRIPTION     : blablabla
     Duration: 02:22:35.55, start: 0.000000, bitrate: 3689 kb/s
       Chapter #0:0: start 354.274000, end 1854.154000
       Chapter #0:1: start 1854.154000, end 2333.434000
       Chapter #0:2: start 2333.434000, end 3541.234000
       Chapter #0:3: start 3541.234000, end 4016.554000
       Chapter #0:4: start 4016.554000, end 5369.434000
       Chapter #0:5: start 5369.434000, end 5838.874000
       Chapter #0:6: start 5838.874000, end 6885.754000
       Chapter #0:7: start 6885.754000, end 7337.314000
       Chapter #0:8: start 7337.314000, end 8313.514000
       Chapter #0:9: start 8313.514000, end 8358.514000
       Chapter #0:10: start 8358.514000, end 8555.554000
       Stream #0:0(eng): Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
       Stream #0:1(ger): Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s (default)
       Stream #0:2(ger): Audio: ac3, 48000 Hz, stereo, fltp, 384 kb/s (default)
       Stream #0:3(ger): Subtitle: subrip (default)
    [libx264 @ 0x56335b31c8a0] using SAR=64/45
    [libx264 @ 0x56335b31c8a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x56335b31c8a0] profile High, level 3.0
    [libx264 @ 0x56335b31c8a0] 264 - core 148 r2708 86b7198 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to 'The-Movie_name.mkv.mp4':
     Metadata:
       title           : The Movie name
       DESCRIPTION-ger : BlaBlaBla
       encoder         : Lavf57.56.100
       Chapter #0:0: start 354.274000, end 1854.154000
       Chapter #0:1: start 1854.154000, end 2333.434000
       Chapter #0:2: start 2333.434000, end 3541.234000
       Chapter #0:3: start 3541.234000, end 4016.554000
       Chapter #0:4: start 4016.554000, end 5369.434000
       Chapter #0:5: start 5369.434000, end 5838.874000
       Chapter #0:6: start 5838.874000, end 6885.754000
       Chapter #0:7: start 6885.754000, end 7337.314000
       Chapter #0:8: start 7337.314000, end 8313.514000
       Chapter #0:9: start 8313.514000, end 8358.514000
       Chapter #0:10: start 8358.514000, end 8555.554000
       Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
       Metadata:
         encoder         : Lavc57.64.101 libx264
       Side data:
         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
       Stream #0:1(ger): Audio: mp3 (libmp3lame) (i[0][0][0] / 0x0069), 48000 Hz, stereo, s16p, 320 kb/s (default)
       Metadata:
         encoder         : Lavc57.64.101 libmp3lame
       Stream #0:2(ger): Subtitle: dvd_subtitle (dvdsub) ([224][0][0][0] / 0x00E0) (default)
       Metadata:
         encoder         : Lavc57.64.101 dvdsub
    Stream mapping:
     Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
     Stream #0:1 -> #0:1 (mp2 (native) -> mp3 (libmp3lame))
     Stream #0:3 -> #0:2 (subrip (srt) -> dvd_subtitle (dvdsub))
    Press [q] to stop, [?] for help
    [mpeg2video @ 0x56335b31bb20] warning: first frame is no keyframe
    [dvdsub @ 0x56335b2f8600] Bitmap subtitle required:00:31.41 bitrate= 685.0kbits/s dup=15 drop=2 speed=3.65x    
    Subtitle encoding failed
    [libx264 @ 0x56335b31c8a0] frame I:4     Avg QP:13.61  size: 32211
    [libx264 @ 0x56335b31c8a0] frame P:202   Avg QP:21.61  size:  8129
    [libx264 @ 0x56335b31c8a0] frame B:551   Avg QP:28.86  size:  1021
    [libx264 @ 0x56335b31c8a0] consecutive B-frames:  0.8%  4.2%  5.9% 89.1%
    [libx264 @ 0x56335b31c8a0] mb I  I16..4: 36.4% 49.0% 14.7%
    [libx264 @ 0x56335b31c8a0] mb P  I16..4:  1.6%  3.2%  0.7%  P16..4: 20.8%  9.1%  6.0%  0.0%  0.0%    skip:58.7%
    [libx264 @ 0x56335b31c8a0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 17.9%  1.6%  0.4%  direct: 0.7%  skip:79.3%  L0:40.6% L1:48.8% BI:10.5%
    [libx264 @ 0x56335b31c8a0] 8x8 transform intra:55.5% inter:69.0%
    [libx264 @ 0x56335b31c8a0] coded y,uvDC,uvAC intra: 46.1% 45.6% 23.5% inter: 5.3% 5.4% 2.1%
    [libx264 @ 0x56335b31c8a0] i16 v,h,dc,p: 40% 44%  6% 10%
    [libx264 @ 0x56335b31c8a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 33% 33%  2%  2%  3%  2%  3%  3%
    [libx264 @ 0x56335b31c8a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 29% 14%  3%  3%  4%  3%  4%  3%
    [libx264 @ 0x56335b31c8a0] i8c dc,h,v,p: 47% 29% 21%  3%
    [libx264 @ 0x56335b31c8a0] Weighted P-Frames: Y:1.0% UV:0.0%
    [libx264 @ 0x56335b31c8a0] ref P L0: 62.3% 12.0% 18.2%  7.5%  0.0%
    [libx264 @ 0x56335b31c8a0] ref B L0: 84.6% 11.5%  3.8%
    [libx264 @ 0x56335b31c8a0] ref B L1: 94.9%  5.1%
    [libx264 @ 0x56335b31c8a0] kb/s:616.48
    [libmp3lame @ 0x56335b2f7880] 3 frames left in the queue on closing
    Conversion failed!

    Any ideas ?

  • FFmpeg - Concat videos with different time base

    21 janvier 2017, par Xys

    I’m trying to concat videos with the concat demuxer, but it does not work when using one video ("video2.mp4" below). By does not work, I mean playing the concatenated video on a player will work until the second video part starts (it just cannot read the video anymore). It works with the concat filter though. They are both mp4 videos, so I think it’s because of the time base ? I can concat other videos with the concat demuxer and it works fine (even with different resolutions/bitrate). It only happens when trying to concat "video2.mp4".

    Also, I have a lot of warning/errors like this, probably when ffmpeg starts concatenating the 2nd video :

    [mp4 @ 0x7f847a814800] Non-monotonous DTS in output stream 0:0; previous: 906906, current: 302359; changing to 906907. This may result in incorrect timestamps in the output file.

    What would be the best way to have a minimum concat time ? Do I really need to use the concat filter or can I change the time base of "video1.mp4" if it’s really the problem ?

    Any help would be appreciated, thanks !

    Video 1 :

    ffprobe version 3.2.2 Copyright (c) 2007-2016 the FFmpeg developers
     built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
     libavutil      55. 34.100 / 55. 34.100
     libavcodec     57. 64.101 / 57. 64.101
     libavformat    57. 56.100 / 57. 56.100
     libavdevice    57.  1.100 / 57.  1.100
     libavfilter     6. 65.100 /  6. 65.100
     libavresample   3.  1.  0 /  3.  1.  0
     libswscale      4.  2.100 /  4.  2.100
     libswresample   2.  3.100 /  2.  3.100
     libpostproc    54.  1.100 / 54.  1.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video1.mp4':
     Metadata:
       major_brand     : mp42
       minor_version   : 0
       compatible_brands: isommp42
       creation_time   : 2016-08-17T22:50:35.000000Z
     Duration: 00:00:10.11, start: 0.000000, bitrate: 38018 kb/s
       Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1696x848, 37832 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : SoundHandle

    Video 2 :

    ffprobe version 3.2.2 Copyright (c) 2007-2016 the FFmpeg developers
     built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
     libavutil      55. 34.100 / 55. 34.100
     libavcodec     57. 64.101 / 57. 64.101
     libavformat    57. 56.100 / 57. 56.100
     libavdevice    57.  1.100 / 57.  1.100
     libavfilter     6. 65.100 /  6. 65.100
     libavresample   3.  1.  0 /  3.  1.  0
     libswscale      4.  2.100 /  4.  2.100
     libswresample   2.  3.100 /  2.  3.100
     libpostproc    54.  1.100 / 54.  1.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video2.mp4':
     Metadata:
       major_brand     : mp42
       minor_version   : 0
       compatible_brands: mp42mp41
       creation_time   : 2017-01-06T22:30:23.000000Z
     Duration: 00:00:08.19, start: 0.000000, bitrate: 101474 kb/s
       Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 4096x2048 [SAR 1:1 DAR 2:1], 101549 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
       Metadata:
         creation_time   : 2017-01-06T22:30:23.000000Z
         handler_name    : ?Mainconcept Video Media Handler
         encoder         : AVC Coding
       Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
       Metadata:
         creation_time   : 2017-01-06T22:30:23.000000Z
         handler_name    : #Mainconcept MP4 Sound Media Handler

    FFMpeg Command :

    ffmpeg -f concat -safe 0 -i concat.txt -c copy result.mp4

    concat.txt :

    file '/path/to/video1.mp4'
    file '/path/to/video2.mp4'

    Command result :

    ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
     built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
     libavutil      55. 34.100 / 55. 34.100
     libavcodec     57. 64.101 / 57. 64.101
     libavformat    57. 56.100 / 57. 56.100
     libavdevice    57.  1.100 / 57.  1.100
     libavfilter     6. 65.100 /  6. 65.100
     libavresample   3.  1.  0 /  3.  1.  0
     libswscale      4.  2.100 /  4.  2.100
     libswresample   2.  3.100 /  2.  3.100
     libpostproc    54.  1.100 / 54.  1.100
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fbd8b808c00] Auto-inserting h264_mp4toannexb bitstream filter
    Input #0, concat, from 'concat.txt':
     Duration: N/A, start: 0.000000, bitrate: 38021 kb/s
       Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1696x848, 37832 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : SoundHandle
    Output #0, mp4, to 'result.mp4':
     Metadata:
       encoder         : Lavf57.56.100
       Stream #0:0(eng): Video: h264 (Baseline) ([33][0][0][0] / 0x0021), yuv420p, 1696x848, q=2-31, 37832 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 189 kb/s
       Metadata:
         creation_time   : 2016-08-18T00:02:24.000000Z
         handler_name    : SoundHandle
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
     Stream #0:1 -> #0:1 (copy)
    Press [q] to stop, [?] for help
    frame=  112 fps=0.0 q=-1.0 size=   12701kB time=00:00:03.70 bitrate=28092.2kbits/s speed= 7.4x
    frame=  151 fps=151 q=-1.0 size=   18853kB time=00:00:05.00 bitrate=30857.5kbits/s speed=   5x
    frame=  224 fps=149 q=-1.0 size=   30042kB time=00:00:07.44 bitrate=33074.8kbits/s speed=4.95x
    frame=  268 fps=134 q=-1.0 size=   36596kB time=00:00:08.90 bitrate=33650.8kbits/s speed=4.44x
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fbd8a808000] Auto-inserting h264_mp4toannexb bitstream filter.9x
    [mp4 @ 0xb545d000] Non-monotonous DTS in output stream 0:1; previous: 484352, current: 445939; changing to 484353. This may result in incorrect timestamps in the output file.
    [concat @ 0xb545c400] DTS 304057 < 906906 out of order
    [mp4 @ 0xb545d000] Non-monotonous DTS in output stream 0:0; previous: 906906, current: 304057; changing to 906907. This may result in incorrect timestamps in the output file.
    [mp4 @ 0xb545d000] Non-monotonous DTS in output stream 0:1; previous: 484353, current: 446963; changing to 484354. This may result in incorrect timestamps in the output file.
    ...
    ... like 100 DTS errors ...
    ...
    [mp4 @ 0xb545d000] Non-monotonous DTS in output stream 0:0; previous: 907150, current: 548301; changing to 907151. This may result in incorrect timestamps in the output file.
    frame=  548 fps=169 q=-1.0 Lsize=  148399kB time=00:00:18.28 bitrate=66493.7kbits/s speed=5.64x
    video:148027kB audio:359kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.008622%

    Thank you in advance !