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  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (8274)

  • FFMpeg Concat Filter - Setting start position for file

    9 avril 2014, par Joyce Babu

    I want to concat two video files using the concat filter. The first file has to be included fully, whereas the second video must be included from the 10th second. Do I need to first create an intermediate file starting from the 10th second, or can I do it in one step ?

    The command I am using is

    /usr/local/bin/ffmpeg -i intro.mp4 -i input.mp4 -filter_complex '[0:v] scale=720:576 [in1]; [1:v] scale=720:576 [in2]; [in1][in2] concat [v]; [0:a][1:a] concat=v=0:a=1 [a]' -map '[v]' -map '[a]' output.mp4

    I tried specifying -ss after -i input.mp4, but it is applied on the final output file.

    iMac:files joyce$ /usr/local/bin/ffmpeg -i intro.mp4 -i input.mp4 -filter_complex '[0:v] scale=720:576 [in1]; [1:v] scale=720:576 [in2]; [in1][in2] concat [v]; [0:a][1:a] concat=v=0:a=1 [a]' -map '[v]' -map '[a]' output.mp4
    
ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Mar 22 2014 16:19:43 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libfdk-aac
    
  libavutil      52. 48.101 / 52. 48.101
    
  libavcodec     55. 39.101 / 55. 39.101
    
  libavformat    55. 19.104 / 55. 19.104
    
  libavdevice    55.  5.100 / 55.  5.100
    
  libavfilter     3. 90.100 /  3. 90.100
    
  libavresample   1.  1.  0 /  1.  1.  0
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
  Duration: 00:00:03.05, start: 0.046440, bitrate: 1304 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 1167 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 132 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
    episode_sort    : 1
    
    season_number   : 1
    
    media_type      : 9
    
    hd_video        : 0
    
  Duration: 00:00:45.43, start: 0.042667, bitrate: 906 kb/s
    
    Stream #1:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 774 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
File 'output.mp4' already exists. Overwrite ? [y/N] y
    
[libx264 @ 0x7fa9a8828e00] using SAR=1/1
    
[libx264 @ 0x7fa9a8828e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
    
[libx264 @ 0x7fa9a8828e00] profile High, level 3.1
    
[libx264 @ 0x7fa9a8828e00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x576 [SAR 1:1 DAR 5:4], q=-1--1, 30k tbn, 29.97 tbc (default)
    
    Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
    
Stream mapping:
    
  Stream #0:0 (h264) -> scale
    
  Stream #0:1 (aac) -> concat:in0:a0
    
  Stream #1:0 (h264) -> scale
    
  Stream #1:1 (aac) -> concat:in1:a0
    
  concat -> Stream #0:0 (libx264)
    
  concat -> Stream #0:1 (libfaac)
    
Press [q] to stop, [?] for help
    
frame= 1453 fps= 42 q=-1.0 Lsize=    4536kB time=00:00:48.50 bitrate= 766.1kbits/s dup=227 drop=0    
    
video:3796kB audio:691kB subtitle:0 global headers:0kB muxing overhead 1.102067%
    
[libx264 @ 0x7fa9a8828e00] frame I:31    Avg QP:17.02  size: 14953
    
[libx264 @ 0x7fa9a8828e00] frame P:764   Avg QP:24.14  size:  3677
    
[libx264 @ 0x7fa9a8828e00] frame B:658   Avg QP:28.17  size:   933
    
[libx264 @ 0x7fa9a8828e00] consecutive B-frames: 36.4%  6.2% 10.3% 47.1%
    
[libx264 @ 0x7fa9a8828e00] mb I  I16..4: 40.4% 32.3% 27.3%
    
[libx264 @ 0x7fa9a8828e00] mb P  I16..4:  6.6%  4.0%  1.1%  P16..4: 25.2%  5.7%  2.3%  0.0%  0.0%    skip:55.0%
    
[libx264 @ 0x7fa9a8828e00] mb B  I16..4:  0.8%  0.4%  0.2%  B16..8: 24.5%  1.7%  0.2%  direct: 0.5%  skip:71.6%  L0:50.7% L1:45.5% BI: 3.9%
    
[libx264 @ 0x7fa9a8828e00] 8x8 transform intra:33.3% inter:59.0%
    
[libx264 @ 0x7fa9a8828e00] coded y,uvDC,uvAC intra: 26.4% 41.2% 8.0% inter: 5.6% 7.9% 0.2%
    
[libx264 @ 0x7fa9a8828e00] i16 v,h,dc,p: 46% 29%  8% 17%
    
[libx264 @ 0x7fa9a8828e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 19% 28%  3%  3%  4%  3%  4%  3%
    
[libx264 @ 0x7fa9a8828e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 22% 13%  4%  6%  7%  5%  5%  3%
    
[libx264 @ 0x7fa9a8828e00] i8c dc,h,v,p: 57% 19% 20%  4%
    
[libx264 @ 0x7fa9a8828e00] Weighted P-Frames: Y:1.8% UV:1.2%
    
[libx264 @ 0x7fa9a8828e00] ref P L0: 73.2%  9.1% 11.7%  5.3%  0.7%
    
[libx264 @ 0x7fa9a8828e00] ref B L0: 89.3%  8.9%  1.8%
    
[libx264 @ 0x7fa9a8828e00] ref B L1: 95.3%  4.7%
    
[libx264 @ 0x7fa9a8828e00] kb/s:641.26

  • ffmpeg export multichannel audio -map

    8 avril 2014, par speedyrazor

    I am trying to export all audio channels from a multichannel quicktime file with ffmpeg which has the following audio configuration, but am unsure if the command below is correct. All the files look and play correct in Quicktime player except the L+R_Total.wav which refuses to play in Quicktime player but plays fine in VLC, so not sure if i'm using the wrong command :

    Track 1 - mono
    
Track 2 - mono
    
Track 3 - mono
    
Track 4 - mono
    
Track 5 - mono
    
Track 6 - mono
    
Track 7 - stereo

    I am using :

    /Users/me/Desktop/python/ffmpeg/ffmpeg -i /Users/me/Desktop/test.mov -acodec pcm_s24le -map 0:1 -y Left.wav -acodec pcm_s24le -map 0:2 Right.wav -acodec pcm_s24le -map 0:3 Center.wav -acodec pcm_s24le -map 0:4 LFE.wav -acodec pcm_s24le -map 0:5 Left_Surround.wav -acodec pcm_s24le -map 0:6 Right_Surround.wav -acodec pcm_s24le -map 0:7 Left+Right_Total.wav

    Here is the printout from the terminal :

        MacBook-Pro:~ me$ /Users/me/Desktop/python/ffmpeg/ffmpeg -i /Users/me/Desktop/test.mov -acodec pcm_s24le -map 0:1 -y Left.wav -acodec pcm_s24le -map 0:2 Right.wav -acodec pcm_s24le -map 0:3 Center.wav -acodec pcm_s24le -map 0:4 LFE.wav -acodec pcm_s24le -map 0:5 Left_Surround.wav -acodec pcm_s24le -map 0:6 Right_Surround.wav -acodec pcm_s24le -map 0:7 Left+Right_Total.wav
    
ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Mar 25 2014 15:00:55 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      52. 66.100 / 52. 66.100
    
  libavcodec     55. 52.102 / 55. 52.102
    
  libavformat    55. 33.100 / 55. 33.100
    
  libavdevice    55. 10.100 / 55. 10.100
    
  libavfilter     4.  2.100 /  4.  2.100
    
  libswscale      2.  5.102 /  2.  5.102
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/me/Desktop/test.mov':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    creation_time   : 2014-03-06 11:25:34
    
  Duration: 00:01:03.48, start: 0.000000, bitrate: 153967 kb/s
    
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 144704 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23976 tbn, 23976 tbc (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
      timecode        : 00:00:00:00
    
    Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (FL), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (FR), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (LFE), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:5(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (BL), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:6(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (BR), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, downmix, s32, 2304 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
    Stream #0:8(eng): Data: none (tmcd / 0x64636D74) (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:26:04
    
      handler_name    : Apple Alias Data Handler
    
      timecode        : 00:00:00:00
    
Output #0, wav, to 'Left.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #0:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels (FL), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #1, wav, to 'Right.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #1:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels (FR), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #2, wav, to 'Center.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #2:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, mono, s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #3, wav, to 'LFE.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #3:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels (LFE), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #4, wav, to 'Left_Surround.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #4:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels (BL), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #5, wav, to 'Right_Surround.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #5:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels (BR), s32, 1152 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Output #6, wav, to 'Left+Right_Total.wav':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    ISFT            : Lavf55.33.100
    
    Stream #6:0(eng): Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, downmix, s32, 2304 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-06 11:25:34
    
      handler_name    : Apple Alias Data Handler
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:2 -> #1:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:3 -> #2:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:4 -> #3:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:5 -> #4:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:6 -> #5:0 (pcm_s24le -> pcm_s24le)
    
  Stream #0:7 -> #6:0 (pcm_s24le -> pcm_s24le)
    
Press [q] to stop, [?] for help
    
size=    8927kB time=00:01:03.48 bitrate=1152.0kbits/s    
    
video:0kB audio:71415kB subtitle:0 data:0 global headers:0kB muxing overhead -87.499863%

  • ffmpeg conversion commandline needed [migrated]

    8 avril 2014, par user3506221

    I want to ask for help on converting a mpg videofile recorded from TV
    to a mp4 format my SAT Receiver can play, (mp4).
    Below are the format infos of source and target output by ffmpeg -i :
    All done on Linux.

    source :

    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 9500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
Stream #0:2[0x83]: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s

    target :

    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 720x406 [SAR 1:1 DAR 360:203], 1894 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 93 kb/s (default)

    ffmpeg -i ./source.mpg
    ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
    built on Mar 24 2014 17:15:07 with gcc 4.8 (SUSE Linux)
    configuration : —shlibdir=/usr/lib —prefix=/usr —mandir=/usr/share/man —libdir=/usr/lib —enable-shared —disable-static —enable-debug —disable-stripping —extra-cflags='-fomit-frame-pointer -fmessage-length=0 -grecord-gcc-switches -fstack-protector -O2 -Wall -D_FORTIFY_SOURCE=2 -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' —enable-gpl —enable-x11grab —enable-version3 —enable-pthreads —enable-avfilter —enable-libpulse —enable-libvpx —enable-libopus —enable-libass —enable-libx265 —enable-libmp3lame —enable-libvorbis —enable-libtheora —enable-libspeex —enable-libxvid —enable-libx264 —enable-libschroedinger —enable-libgsm —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-postproc —enable-libdc1394 —enable-librtmp —enable-libfreetype —enable-avresample —enable-libtwolame —enable-libvo-aacenc —enable-gnutls
    libavutil 52. 66.100 / 52. 66.100
    libavcodec 55. 52.102 / 55. 52.102
    libavformat 55. 33.100 / 55. 33.100
    libavdevice 55. 10.100 / 55. 10.100
    libavfilter 4. 2.100 / 4. 2.100
    libavresample 1. 2. 0 / 1. 2. 0
    libswscale 2. 5.102 / 2. 5.102
    libswresample 0. 18.100 / 0. 18.100
    libpostproc 52. 3.100 / 52. 3.100
    [NULL @ 0x82baf20] start time is not set in estimate_timings_from_pts
    Input #0, mpeg, from './Rossini.mpg' :
    Duration : 01:49:08.19, start : 0.252622, bitrate : 4815 kb/s
    Stream #0:0[0x1bf] : Data : dvd_nav_packet
    Stream #0:1[0x1e0] : Video : mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 9500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:2[0x83] : Audio : ac3, 48000 Hz, stereo, fltp, 448 kb/s
    At least one output file must be specified

    ffmpeg -i ./target.mp4
    ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
    built on Mar 24 2014 17:15:07 with gcc 4.8 (SUSE Linux)
    configuration : —shlibdir=/usr/lib —prefix=/usr —mandir=/usr/share/man —libdir=/usr/lib —enable-shared —disable-static —enable-debug —disable-stripping —extra-cflags='-fomit-frame-pointer -fmessage-length=0 -grecord-gcc-switches -fstack-protector -O2 -Wall -D_FORTIFY_SOURCE=2 -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' —enable-gpl —enable-x11grab —enable-version3 —enable-pthreads —enable-avfilter —enable-libpulse —enable-libvpx —enable-libopus —enable-libass —enable-libx265 —enable-libmp3lame —enable-libvorbis —enable-libtheora —enable-libspeex —enable-libxvid —enable-libx264 —enable-libschroedinger —enable-libgsm —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-postproc —enable-libdc1394 —enable-librtmp —enable-libfreetype —enable-avresample —enable-libtwolame —enable-libvo-aacenc —enable-gnutls
    libavutil 52. 66.100 / 52. 66.100
    libavcodec 55. 52.102 / 55. 52.102
    libavformat 55. 33.100 / 55. 33.100
    libavdevice 55. 10.100 / 55. 10.100
    libavfilter 4. 2.100 / 4. 2.100
    libavresample 1. 2. 0 / 1. 2. 0
    libswscale 2. 5.102 / 2. 5.102
    libswresample 0. 18.100 / 0. 18.100
    libpostproc 52. 3.100 / 52. 3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './target.mp4' :
    Metadata :
    major_brand : mp42
    minor_version : 0
    compatible_brands : isommp42
    creation_time : 2014-03-31 22:03:51
    Duration : 01:20:35.84, start : 0.000000, bitrate : 1992 kb/s
    Stream #0:0(und) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 720x406 [SAR 1:1 DAR 360:203], 1894 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    Metadata :
    creation_time : 2014-03-31 22:03:51
    handler_name : Mainconcept MP4 Video Media Handler
    Stream #0:1(und) : Audio : aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 93 kb/s (default)
    Metadata :
    creation_time : 2014-03-31 22:03:51
    handler_name : Mainconcept MP4 Sound Media Handler
    At least one output file must be specified

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