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  • 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.
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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

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  • ffmpeg stuck in generating thumbnail of video [closed]

    10 décembre 2019, par user6121419

    I’m trying to create a thumbnail of a .mov video with ffmpeg, but it gets stuck.
    I tried the same command on 2 different machines and with different types of arguments, but nothing changed the result. The video itself can be viewed without a problem, so it shouldn’t be corrupted.
    The video was taken on an iphone at 4k 60fps.

    What I’ve tried :

    ffmpeg -i IMG_1001.MOV -ss 00:00:02 -vframes 1 thumbnail.jpg

    It gets stuck at the third last line frame= 0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x and from then on, I stopped the process with ctrl+c

    Output :

    ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
     built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
     configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --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-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
     libavutil      55. 78.100 / 55. 78.100
     libavcodec     57.107.100 / 57.107.100
     libavformat    57. 83.100 / 57. 83.100
     libavdevice    57. 10.100 / 57. 10.100
     libavfilter     6.107.100 /  6.107.100
     libavresample   3.  7.  0 /  3.  7.  0
     libswscale      4.  8.100 /  4.  8.100
     libswresample   2.  9.100 /  2.  9.100
     libpostproc    54.  7.100 / 54.  7.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_1001.MOV':
     Metadata:
       major_brand     : qt
       minor_version   : 0
       compatible_brands: qt
       creation_time   : 2019-11-xx
       com.apple.quicktime.make: Apple
       com.apple.quicktime.model: iPhone 8
       com.apple.quicktime.software: 13.2.2
       com.apple.quicktime.creationdate: 2019-11-xx
     Duration: 00:00:05.18, start: 0.000000, bitrate: 54961 kb/s
       Stream #0:0(und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 3840x2160, 54851 kb/s, 60 fps, 60 tbr, 600 tbn, 600 tbc (default)
       Metadata:
         creation_time   : 2019-11-xx
         handler_name    : Core Media Data Handler
         encoder         : HEVC
       Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 94 kb/s (default)
       Metadata:
         creation_time   : 2019-11-xx
         handler_name    : Core Media Data Handler
       Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
       Metadata:
         creation_time   : 2019-11-xx
         handler_name    : Core Media Data Handler
       Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
       Metadata:
         creation_time   : 2019-11-xx
         handler_name    : Core Media Data Handler
    Stream mapping:
     Stream #0:0 -> #0:0 (hevc (native) -> mjpeg (native))
    Press [q] to stop, [?] for help
    [swscaler @ 0x55d83a288940] deprecated pixel format used, make sure you did set range correctly
    Output #0, image2, to 'thumbnail.jpg':
     Metadata:
       major_brand     : qt
       minor_version   : 0
       compatible_brands: qt
       com.apple.quicktime.creationdate: 2019-11-xx
       com.apple.quicktime.make: Apple
       com.apple.quicktime.model: iPhone 8
       com.apple.quicktime.software: 13.2.2
       encoder         : Lavf57.83.100
       Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 3840x2160, q=2-31, 200 kb/s, 60 fps, 60 tbn, 60 tbc (default)
       Metadata:
         creation_time   : 2019-11-xx
         handler_name    : Core Media Data Handler
         encoder         : Lavc57.107.100 mjpeg
       Side data:
         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x
    video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

    Any idea on what it could be ? Am I missing something or could it be that the encoding can’t be read properly by ffmpeg ? Besides that I haven’t found any alternative to generate thumbnails from videos on linux

  • Why does ffmpeg need DNS resolver as its dependencies ?

    20 décembre 2019, par Kshitij

    I was installing FFmpeg and libav today using brew install ffmpeg libav when I noticed unbound in the dependencies list.

    It’s very strange because unbound is DNS resolver and why ffmpeg would need it.

    ❯ brew install ffmpeg libav
    
==> Installing dependencies for ffmpeg: aom, frei0r, gmp, libtasn1, nettle, p11-kit, unbound, gnutls, lame, libass, libbluray, libsoxr, libvidstab, libvpx, opencore-amr, opus, libsndfile, libsamplerate, rubberband, sdl2, speex, giflib, leptonica, tesseract, theora, x264, x265 and xvid

    I even checked the info list for ffmpeg but unbound was not present there

    ❯ brew info ffmpeg
    
ffmpeg: stable 4.2.1 (bottled), HEAD
    
Play, record, convert, and stream audio and video
    
https://ffmpeg.org/
    
/usr/local/Cellar/ffmpeg/4.2.1_2 (287 files, 56.6MB)*
    
- Poured from bottle on 2019-12-19 at 10:45:56
    
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/ffmpeg.rb
    
==> Dependencies
    
Build: nasm ✘, pkg-config ✔, texi2html ✘
    
Required: aom ✔, fontconfig ✔, freetype ✔, frei0r ✔, gnutls ✔, lame ✔, libass ✔, libbluray ✔, libsoxr ✔, libvidstab ✔, libvorbis ✔, libvpx ✔, opencore-amr ✔, openjpeg ✔, opus ✔, rtmpdump ✔, rubberband ✔, sdl2 ✔, snappy ✔, speex ✔, tesseract ✔, theora ✔, x264 ✔, x265 ✔, xvid ✔, xz ✔
    
==> Options
    
--HEAD
    
    Install HEAD version
    
==> Analytics
    
install: 66,434 (30 days), 280,128 (90 days), 1,079,492 (365 days)
    
install-on-request: 48,053 (30 days), 203,583 (90 days), 759,254 (365 days)
    
build-error: 0 (30 days)

    Links for reference

  • Python FFmpeg : Setting VBR and BT.709

    14 décembre 2019, par Cryptonaut

    I’m using this Python library to programmatically generate a short video using an image (.png) as input. The video needs to match the specifications of another video created by someone else.

    The key differences between my output and the other are the following (these are the media attributes I desire to have) :

    How would I achieve VBR ? It was my understanding ProRes 422 HQ natively used unconstrained VBR yet my output specifies CBR.

    Secondly, as can be seen from my code, I’m attempting to conform to BT.709. However, my media information output does not specify this. What am I doing incorrectly ?

    Here’s my code :

        image = ffmpeg.input(input_image, t='00:00:10', framerate='24000/1001', loop='1', probesize='42M')
    

    
    output = ffmpeg.output(image, output_video,
    
    f='mov',
    
    vcodec='prores_ks',
    
    vprofile='3',
    
    pix_fmt='yuv422p10le',
    
    g='48',
    
    video_track_timescale='24000',
    
    movflags='use_metadata_tags',
    
    timecode='00:00:00:00',
    
    color_primaries='bt709',
    
    color_trc='bt709',
    
    colorspace='bt709',
    
    qcomp='1',
    
    # BT.709 issue solved by adding the bsf option as seen via the line below
    
    bsf='prores_metadata=color_primaries=bt709:color_trc=bt709:colorspace=bt709', 
    
    vf='scale=in_range=full:in_color_matrix=bt709:out_range=full:out_color_matrix=bt709')
    

    
    output.run()

    Here’s the media information produced by my output :

    {
    
   "media":{
    
      "@ref":"Redacted",
    
      "track":[
    
         {
    
            "@type":"General",
    
            "VideoCount":"1",
    
            "OtherCount":"1",
    
            "FileExtension":"mov",
    
            "Format":"MPEG-4",
    
            "Format_Profile":"QuickTime",
    
            "CodecID":"qt  ",
    
            "CodecID_Version":"0000.02",
    
            "CodecID_Compatible":"qt  ",
    
            "FileSize":"196366623",
    
            "Duration":"10.010",
    
            "OverallBitRate":"156936362",
    
            "FrameRate":"23.976",
    
            "FrameCount":"240",
    
            "StreamSize":"2463",
    
            "HeaderSize":"28",
    
            "DataSize":"196364172",
    
            "FooterSize":"2423",
    
            "IsStreamable":"No",
    
            "File_Created_Date":"UTC 2019-12-13 19:26:37.150",
    
            "File_Created_Date_Local":"2019-12-13 19:26:37.150",
    
            "File_Modified_Date":"UTC 2019-12-13 19:27:20.303",
    
            "File_Modified_Date_Local":"2019-12-13 19:27:20.303"
    
         },
    
         {
    
            "@type":"Video",
    
            "StreamOrder":"0",
    
            "ID":"1",
    
            "Format":"ProRes",
    
            "Format_Version":"0",
    
            "Format_Profile":"422 HQ",
    
            "CodecID":"apch",
    
            "Duration":"10.010",
    
            "BitRate_Mode":"CBR",
    
            "BitRate":"156934237",
    
            "Width":"1920",
    
            "Height":"1080",
    
            "Sampled_Width":"1920",
    
            "Sampled_Height":"1080",
    
            "PixelAspectRatio":"1.000",
    
            "DisplayAspectRatio":"1.778",
    
            "Rotation":"0.000",
    
            "FrameRate_Mode":"CFR",
    
            "FrameRate":"23.976",
    
            "FrameCount":"240",
    
            "ColorSpace":"YUV",
    
            "ChromaSubsampling":"4:2:2",
    
            "ScanType":"Progressive",
    
            "Delay":"0.000",
    
            "StreamSize":"196364160",
    
            "Encoded_Library":"Lavc",
    
            "colour_description_present":"Yes",
    
            "colour_description_present_Source":"Stream",
    
            "colour_primaries_Source":"Stream",
    
            "transfer_characteristics_Source":"Stream",
    
            "matrix_coefficients_Source":"Stream"
    
         },
    
         {
    
            "@type":"Other",
    
            "StreamOrder":"1",
    
            "ID":"2",
    
            "Type":"Time code",
    
            "Format":"QuickTime TC",
    
            "Duration":"10.010",
    
            "FrameRate":"23.976",
    
            "TimeCode_FirstFrame":"00:00:00:00",
    
            "TimeCode_Striped":"Yes",
    
            "Language":"en",
    
            "Default":"No"
    
         }
    
      ]
    
   }
    
}

    Here’s the media information spec I’m trying to match :

    {
    
   "media":{
    
      "@ref":"Redacted",
    
      "track":[
    
         {
    
            "@type":"General",
    
            "VideoCount":"1",
    
            "OtherCount":"1",
    
            "FileExtension":"mov",
    
            "Format":"MPEG-4",
    
            "Format_Profile":"QuickTime",
    
            "CodecID":"qt  ",
    
            "CodecID_Version":"2005.03",
    
            "CodecID_Compatible":"qt  ",
    
            "FileSize":"1397430682",
    
            "Duration":"70.737",
    
            "OverallBitRate_Mode":"VBR",
    
            "OverallBitRate":"158042403",
    
            "FrameRate":"23.976",
    
            "FrameCount":"1696",
    
            "StreamSize":"9898",
    
            "HeaderSize":"28",
    
            "DataSize":"1397420796",
    
            "FooterSize":"9858",
    
            "IsStreamable":"No",
    
            "Encoded_Date":"UTC 2019-04-29 22:26:32",
    
            "Tagged_Date":"UTC 2019-04-29 22:26:32",
    
            "File_Created_Date":"UTC 2019-12-12 16:52:57.215",
    
            "File_Created_Date_Local":"2019-12-12 16:52:57.215",
    
            "File_Modified_Date":"UTC 2019-12-12 17:25:58.903",
    
            "File_Modified_Date_Local":"2019-12-12 17:25:58.903",
    
            "Encoded_Application":"DVP Factory r561 (2019-04-25), Host: dvp07"
    
         },
    
         {
    
            "@type":"Video",
    
            "StreamOrder":"0",
    
            "ID":"1",
    
            "Format":"ProRes",
    
            "Format_Version":"0",
    
            "Format_Profile":"422 HQ",
    
            "CodecID":"apch",
    
            "Duration":"70.737",
    
            "Duration_LastFrame":"-0.000",
    
            "BitRate_Mode":"VBR",
    
            "BitRate":"158040381",
    
            "Width":"1920",
    
            "Height":"1080",
    
            "Sampled_Width":"1920",
    
            "Sampled_Height":"1080",
    
            "PixelAspectRatio":"1.000",
    
            "DisplayAspectRatio":"1.778",
    
            "Rotation":"0.000",
    
            "FrameRate_Mode":"CFR",
    
            "FrameRate":"23.976",
    
            "FrameCount":"1696",
    
            "ColorSpace":"YUV",
    
            "ChromaSubsampling":"4:2:2",
    
            "ScanType":"Progressive",
    
            "Delay":"0.000",
    
            "StreamSize":"1397420784",
    
            "Encoded_Library":"agi0",
    
            "Language":"en",
    
            "Encoded_Date":"UTC 2019-04-29 22:26:32",
    
            "Tagged_Date":"UTC 2019-04-29 22:26:32",
    
            "colour_description_present":"Yes",
    
            "colour_description_present_Source":"Container / Stream",
    
            "colour_primaries":"BT.709",
    
            "colour_primaries_Source":"Container",
    
            "colour_primaries_Original_Source":"Stream",
    
            "transfer_characteristics":"BT.709",
    
            "transfer_characteristics_Source":"Container",
    
            "transfer_characteristics_Original_Source":"Stream",
    
            "matrix_coefficients":"BT.709",
    
            "matrix_coefficients_Source":"Container / Stream"
    
         },
    
         {
    
            "@type":"Other",
    
            "StreamOrder":"1",
    
            "ID":"2",
    
            "Type":"Time code",
    
            "Format":"QuickTime TC",
    
            "Duration":"70.737",
    
            "FrameRate":"23.976",
    
            "TimeCode_FirstFrame":"00:00:00:00",
    
            "TimeCode_Striped":"Yes",
    
            "Language":"en",
    
            "extra":{
    
               "Encoded_Date":"UTC 2019-04-29 22:26:32",
    
               "Tagged_Date":"UTC 2019-04-29 22:26:32"
    
            }
    
         }
    
      ]
    
   }
    
}

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