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Autres articles (62)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • MediaSPIP : Modification des droits de création d’objets et de publication définitive

    11 novembre 2010, par

    Par défaut, MediaSPIP permet de créer 5 types d’objets.
    Toujours par défaut les droits de création et de publication définitive de ces objets sont réservés aux administrateurs, mais ils sont bien entendu configurables par les webmestres.
    Ces droits sont ainsi bloqués pour plusieurs raisons : parce que le fait d’autoriser à publier doit être la volonté du webmestre pas de l’ensemble de la plateforme et donc ne pas être un choix par défaut ; parce qu’avoir un compte peut servir à autre choses également, (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

Sur d’autres sites (3763)

  • Error while tanscoding using ffmpeg

    31 octobre 2012, par Sujith

    I have made some changes in the ffserver code and have started the HTTP server.

    Now, when I am trying to run the command to stream the media, it is giving some error.

    The command is :

    ffmpeg -i test.mp4 http://xxx.xxx.xxx.xxx:8090/feed1.ffm

    The error is :

    ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers
    
  built on Apr  5 2012 15:17:16 with gcc 4.1.2 20080704 (Red Hat 4.1.2-52)
    
  configuration: --cxx=CXX
    
  libavutil      51. 34.101 / 51. 34.101
    
  libavcodec     53. 60.100 / 53. 60.100
    
  libavformat    53. 31.100 / 53. 31.100
    
  libavdevice    53.  4.100 / 53.  4.100
    
  libavfilter     2. 60.100 /  2. 60.100
    
  libswscale      2.  1.100 /  2.  1.100
    
  libswresample   0.  6.100 /  0.  6.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 1
    
    compatible_brands: mp42avc1
    
    creation_time   : 2012-04-27 08:20:10
    
  Duration: 00:02:08.28, start: 0.000000, bitrate: 539 kb/s
    
    Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 104 kb/s
    
    Metadata:
    
      creation_time   : 2012-04-27 08:20:10
    
      handler_name    : Apple Sound Media Handler
    
    Stream #0:1(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 320x240, 429 kb/s, 25 fps, 25 tbr, 2500 tbn, 5k tbc
    
    Metadata:
    
      creation_time   : 2012-04-27 08:20:10
    
      handler_name    : Apple Video Media Handler
    

    
[buffer @ 0x112cc860] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
    

    
[scale @ 0x112b9e40] w:320 h:240 fmt:yuv420p -> w:160 h:128 fmt:yuv420p flags:0x4
    

    
[buffer @ 0x112e0a40] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
    

    
[scale @ 0x11286e00] w:320 h:240 fmt:yuv420p -> w:352 h:240 fmt:yuv420p flags:0x4

  • FFMPEG output duration using "-t" is too long by 10 ms

    9 octobre 2018, par Ze'ev

    I’m using this command to take video from a 35 second QuickTime file and replace audio with a WAV :

    ffmpeg -i 'video.mov' -i 'audio.wav' -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 -t 35.0000 'output.mov'

    But the audio is slightly longer than the video, and I’m trying to make ffmpeg trim the output to exactly 35 seconds with -t 35 but the output is 35.01 seconds.

    I also tried -t 35.000 and -to 35 and several other options, but it’s alway 10ms too long.

    ffmpeg output :

    ffmpeg version N-91789-g11cec34829 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-appkit --enable-avfoundation --enable-coreimage --enable-audiotoolbox
    
  libavutil      56. 19.100 / 56. 19.100
    
  libavcodec     58. 27.101 / 58. 27.101
    
  libavformat    58. 17.106 / 58. 17.106
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 26.100 /  7. 26.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mov':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    creation_time   : 2018-10-09T13:41:49.000000Z
    
  Duration: 00:00:35.00, start: 0.000000, bitrate: 172467 kb/s
    
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(tv, bt709, progressive), 1920x1080, 170692 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    
    Metadata:
    
      creation_time   : 2018-10-09T13:41:49.000000Z
    
      handler_name    : Apple Video Media Handler
    
      encoder         : Apple ProRes 422 (HQ)
    
      timecode        : 00:01:12:22
    
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-10-09T13:41:49.000000Z
    
      handler_name    : Apple Sound Media Handler
    
      timecode        : 00:01:12:22
    
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
    
    Metadata:
    
      creation_time   : 2018-10-09T13:41:49.000000Z
    
      handler_name    : Time Code Media Handler
    
      timecode        : 00:01:12:22
    
Guessed Channel Layout for Input Stream #1.0 : stereo
    
Input #1, wav, from 'audio.wav':
    
  Metadata:
    
    encoded_by      : Pro Tools
    
    originator_reference: aaygKpJ1bvMk
    
    date            : 2018-10-02
    
    creation_time   : 12:29:34
    
    time_reference  : 172800000
    
  Duration: 00:00:35.04, bitrate: 2316 kb/s
    
    Stream #1:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
    
Output #0, mov, to 'output.mov':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    encoder         : Lavf58.17.106
    
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 170692 kb/s, 0.04 fps, 25 tbr, 12800 tbn, 25 tbc (default)
    
    Metadata:
    
      creation_time   : 2018-10-09T13:41:49.000000Z
    
      handler_name    : Apple Video Media Handler
    
      encoder         : Apple ProRes 422 (HQ)
    
      timecode        : 00:01:12:22
    
    Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=  875 fps=479 q=-1.0 Lsize=  739138kB time=00:00:34.99 bitrate=173024.6kbits/s speed=19.2x    
    
video:729276kB audio:9846kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.002153%

  • FFmpeg audio channel rematrix (5.1 to stereo)

    8 décembre 2019, par Flock Dawson

    I’ve got a (very large !) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I’d like to convert it to a standard MP4 file (h264 video codec, stereo audio). The original file has 16 channels of audio, however, and FFmpeg gives an error when I try to convert it (’Rematrix is needed’). How do I do rematrixing of audio channels ? Are there additional steps needed ?

    This is the FFmpeg command I used :

    ffmpeg -y -i Capture0000.mov -vcodec libx264 -vb 2000k -pix_fmt yuv420p -coder 0 -profile:v baseline -acodec libfaac -ab 128k /tmp/out.mp4

    This is the FFmpeg output :

    ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
    
      built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
      configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
    
      libavutil      52. 81.100 / 52. 81.100
    
      libavcodec     55. 60.103 / 55. 60.103
    
      libavformat    55. 37.102 / 55. 37.102
    
      libavdevice    55. 13.101 / 55. 13.101
    
      libavfilter     4.  5.100 /  4.  5.100
    
      libswscale      2.  6.100 /  2.  6.100
    
      libswresample   0. 18.100 /  0. 18.100
    
      libpostproc    52.  3.100 / 52.  3.100
    
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
    
      Metadata:
    
        creation_time   : 2014-08-17 18:30:31
    
      Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
    
        Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
    
        Metadata:
    
          creation_time   : 2014-08-17 18:30:31
    
          handler_name    : Apple Alias Data Handler
    
          encoder         : Apple ProRes 422 (HQ)
    
        Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
    
        Metadata:
    
          creation_time   : 2014-08-17 18:30:31
    
          handler_name    : Apple Alias Data Handler
    
    [auto-inserted resampler 0 @ 0x3943da0] [SWR @ 0x39441a0] Rematrix is needed between 16 channels and 5.1 but there is not enough information to do it
    
    [auto-inserted resampler 0 @ 0x3943da0] Failed to configure output pad on auto-inserted resampler 0
    
    Error opening filters!

    This is the FFprobe output :

    ffprobe version 2.2.git Copyright (c) 2007-2014 the FFmpeg developers
    
  built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
  configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
    
  libavutil      52. 81.100 / 52. 81.100
    
  libavcodec     55. 60.103 / 55. 60.103
    
  libavformat    55. 37.102 / 55. 37.102
    
  libavdevice    55. 13.101 / 55. 13.101
    
  libavfilter     4.  5.100 /  4.  5.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
    
  Metadata:
    
    creation_time   : 2014-08-17 18:30:31
    
  Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
    
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
    
    Metadata:
    
      creation_time   : 2014-08-17 18:30:31
    
      handler_name    : Apple Alias Data Handler
    
      encoder         : Apple ProRes 422 (HQ)
    
    Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-08-17 18:30:31
    
      handler_name    : Apple Alias Data Handler

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