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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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.
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  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
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Sur d’autres sites (9268)

  • how to preserve transparency when scaling PNG with ffmpeg

    24 décembre 2020, par Richard

    I am using ffmpeg to scale my PNG images, and I find the transparency turns to white after scaling.
How can I preserve the transparency ? Thanks

    


    ffmpeg -i background_image.png -vf scale=1080:1920 output.png
ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, png_pipe, from 'background_image.png':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: png, pal8(pc), 1440x2560, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> png (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'output.png':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: png, pal8, 1080x1920, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.91.100 png
frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.113x    
video:669kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown



    


    My Sample PNG file

    


    I don't know why my PNG file with transparency is converted to a jpg format with white after uploading to stackoverflow.

    


  • Can't play mp4 video using html5 video tag

    7 août 2020, par John Doe

    I am trying to present an mp4 video (h264) using html5 :

    


    <video width="320" controls="controls">&#xA;            <source src="/home/nabil/FWork/hikvision/ch01_00000100068000101.mp4" type="video/mp4">&#xA;</source></video>&#xA;

    &#xA;

    analyzing video codec with ffmpeg gives the following :

    &#xA;

    ffprobe ch01_00000100068000101.mp4 &#xA;ffprobe version 2.8.17-0ubuntu0.1 Copyright (c) 2007-2020 the FFmpeg developers&#xA;  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609&#xA;  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g&#x2B;&#x2B; --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv&#xA;  libavutil      54. 31.100 / 54. 31.100&#xA;  libavcodec     56. 60.100 / 56. 60.100&#xA;  libavformat    56. 40.101 / 56. 40.101&#xA;  libavdevice    56.  4.100 / 56.  4.100&#xA;  libavfilter     5. 40.101 /  5. 40.101&#xA;  libavresample   2.  1.  0 /  2.  1.  0&#xA;  libswscale      3.  1.101 /  3.  1.101&#xA;  libswresample   1.  2.101 /  1.  2.101&#xA;  libpostproc    53.  3.100 / 53.  3.100&#xA;Invalid UE golomb code&#xA;    Last message repeated 3 times&#xA;Input #0, mpeg, from &#x27;ch01_00000100068000101.mp4&#x27;:&#xA;  Duration: 00:09:27.33, start: 35024.106667, bitrate: 507 kb/s&#xA;    Stream #0:0[0x1e0]: Video: h264 (Baseline), yuv420p, 1280x720, 10 fps, 10 tbr, 90k tbn, 20 tbc&#xA;

    &#xA;

    a possible relevant detail is that playing the video using ubuntu's default video reader (ffmpeg in the background) doesn't show any video controls

    &#xA;

  • How to convert .srt file into ttml based xml subtitle file using ffmpeg ?

    25 août 2023, par geo-freak

    I have an .srt subtitle file. I want to convert it into .ttml format(or xml) using ffmpeg command. I tried using traditional way to convert this. But ffmpeg throwing an error. Is there any way to convert this in Linux platform ? Or any other command line applications do this conversion ?

    &#xA;

    Below is the command I tried.

    &#xA;

    ffmpeg -i my_srt.srt -y srt-to-xml.xml -v verbose&#xA;&#xA;ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers&#xA;built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)&#xA;configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared&#xA;libavutil      56. 31.100 / 56. 31.100&#xA;libavcodec     58. 54.100 / 58. 54.100&#xA;libavformat    58. 29.100 / 58. 29.100&#xA;libavdevice    58.  8.100 / 58.  8.100&#xA;libavfilter     7. 57.100 /  7. 57.100&#xA;libavresample   4.  0.  0 /  4.  0.  0&#xA;libswscale      5.  5.100 /  5.  5.100&#xA;libswresample   3.  5.100 /  3.  5.100&#xA;libpostproc    55.  5.100 / 55.  5.100&#xA;Input #0, srt, from &#x27;my_srt.srt&#x27;:&#xA;Duration: N/A, bitrate: N/A&#xA;    Stream #0:0: Subtitle: subrip&#xA;Output #0, webm_dash_manifest, to &#x27;srt-to-xml.xml&#x27;:&#xA;Output file #0 does not contain any stream&#xA;[AVIOContext @ 0x5614924ef500] Statistics: 22267 bytes read, 0 seeks&#xA;

    &#xA;

    I even tried like below.

    &#xA;

    ffmpeg -i my_srt.srt -y srt_to_ttml.ttml&#xA;

    &#xA;

    It didn't work too.

    &#xA;

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