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  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

Sur d’autres sites (7606)

  • Choppy result from FFMPEG Concatenate

    21 juin 2018, par stonehenge

    I am using this code to merge mp4 files that all have identical encoding, format, etc. My issue is that there is choppiness / flickering at the seams where the videos are combined.
    ffmpeg -f concat -i mylist.txt -c copy output.mp4

    How can I ensure the files merge smoothly ?

    Here is the output from the command prompt.

    ffmpeg version N-91329-g830695be36 Copyright (c) 2000-2018 the FFmpeg developers
    
      built with gcc 7.3.0 (GCC)
    
      configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --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-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
      libavutil      56. 18.102 / 56. 18.102
    
      libavcodec     58. 20.103 / 58. 20.103
    
      libavformat    58. 17.100 / 58. 17.100
    
      libavdevice    58.  4.101 / 58.  4.101
    
      libavfilter     7. 25.100 /  7. 25.100
    
      libswscale      5.  2.100 /  5.  2.100
    
      libswresample   3.  2.100 /  3.  2.100
    
      libpostproc    55.  2.100 / 55.  2.100
    
    [mov,mp4,m4a,3gp,3g2,mj2 @ 000001d1aab03b80] Auto-inserting h264_mp4toannexb bitstream filter
    
    Input #0, concat, from 'mylist.txt':
    
      Duration: N/A, start: 0.000000, bitrate: 74 kb/s
    
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 74 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc
    
        Metadata:
    
          handler_name    : VideoHandler
    
    Output #0, mp4, to 'output2.mp4':
    
      Metadata:
    
        encoder         : Lavf58.17.100
    
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 74 kb/s, 24 fps, 24 tbr, 24k tbn, 24k tbc
    
        Metadata:
    
          handler_name    : VideoHandler
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (copy)
    
    Press [q] to stop, [?] for help
    
    [mov,mp4,m4a,3gp,3g2,mj2 @ 000001d1aab0c340] Auto-inserting h264_mp4toannexb bitstream filter
    
        Last message repeated 1 times
    
    frame=  195 fps=0.0 q=-1.0 Lsize=      77kB time=00:00:08.00 bitrate=  78.8kbits/s speed= 167x
    
    video:73kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.518728%
    

    
ffmpeg version N-91329-g830695be36 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --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-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
  libavutil      56. 18.102 / 56. 18.102
    
  libavcodec     58. 20.103 / 58. 20.103
    
  libavformat    58. 17.100 / 58. 17.100
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 25.100 /  7. 25.100
    
  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 '0_10secs.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.17.100
    
  Duration: 00:00:09.71, start: 0.375000, bitrate: 74 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 71 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '5_10secs.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.17.100
    
  Duration: 00:00:09.71, start: 0.375000, bitrate: 75 kb/s
    
    Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 72 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '0_3secs.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.17.100
    
  Duration: 00:00:02.71, start: 0.375000, bitrate: 75 kb/s
    
    Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 70 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '10_10secs.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.17.100
    
  Duration: 00:00:09.71, start: 0.375000, bitrate: 75 kb/s
    
    Stream #3:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 72 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
At least one output file must be specified

  • FFmpeg generated video length doesn't match expected length [on hold]

    21 juin 2018, par BentCoder

    I am using command below to generate video out of images. The problem is the length out the video generated. It is always 5 seconds less than expected. If I have 4 images, I expect to see 20 seconds of video but I am getting 15 seconds instead. The very last image img-03.jpg just appears at the end of the video as if it is a cover image. Any idea why and solution ?

    Command

    ffmpeg -y -framerate 1/5 -f image2 \
    
-i img-%2d.jpg \
    
-c:v libvpx-vp9 \
    
-r 25 \
    
-crf 30 -b:v 0 \
    
video.webm

    Images

    img-00.jpg
    
img-01.jpg
    
img-02.jpg
    
img-03.jpg

    Output

    ffmpeg version 3.2.10-1~deb9u1~bpo8+1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-version='1~deb9u1~bpo8+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 --disable-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-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  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, image2, from 'img-%2d.jpg':
    
  Duration: 00:00:20.00, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 854x480 [SAR 1:1 DAR 427:240], 0.20 fps, 0.20 tbr, 0.20 tbn, 0.20 tbc
    
[swscaler @ 0x55f2af60e800] deprecated pixel format used, make sure you did set range correctly
    
[libvpx-vp9 @ 0x55f2af6276a0] v1.3.0
    
Output #0, webm, to 'video.webm':
    
  Metadata:
    
    encoder         : Lavf57.56.101
    
    Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 854x480 [SAR 1:1 DAR 427:240], q=-1--1, 25 fps, 1k tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc57.64.101 libvpx-vp9
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg (native) -> vp9 (libvpx-vp9))
    
Press [q] to stop, [?] for help
    
Input stream #0:0 frame changed from size:854x480 fmt:yuvj444p to size:854x480 fmt:yuvj420p
    
[swscaler @ 0x55f2af602b60] deprecated pixel format used, make sure you did set range correctly
    
frame=    4 fps=0.0 q=0.0 Lsize=     214kB time=00:00:15.00 bitrate= 117.0kbits/s speed=  16x    
    
video:214kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.234810%

  • FFMPEG MKV Causing Errors in DASH JS

    24 juin 2018, par Mike

    I’m getting the following browser errors (on all browsers) using Dash JS when transcoding and MKV file :

    ERROR DOMException: Failed to read the 'buffered' property from 'SourceBuffer': This SourceBuffer has been removed from the parent media source.

    and...

    dash.all.min.js:26 Uncaught (in promise) DOMException: Failed to load because no supported source was found.

    What’s weird is I have no issues when I transcode a MP4 file. I’m using FFMPEG in conjunction with Bento4 to build MPEG DASH and HLS files for my video player.

    What I did to single out FFMPEG was to transcode a video that gave me errors on my test server on my local machine (which works) and start the Bento4 process on that file. Doing that, I had no issues and everything played just fine.

    I have removed FFMPEG and reinstalled it multiple times and I always get the same result. I’m sure I screwed something up on my server, but for the life of me I can’t seem to figure out where to start with fixing the issue.

    FFMPEG Version

    ffmpeg version N-91321-ge85c608 Copyright (c) 2000-2018 the FFmpeg developers
    

    
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
    

    
configuration: 
    
--prefix=/root/ffmpeg_build 
    
--pkg-config-flags=--static 
    
--extra-cflags=-I/root/ffmpeg_build/include 
    
--extra-ldflags=-L/root/ffmpeg_build/lib 
    
--extra-libs=-lpthread 
    
--extra-libs=-lm 
    
--bindir=/root/bin 
    
--enable-gpl 
    
--enable-libfdk_aac 
    
--enable-libfreetype 
    
--enable-libmp3lame 
    
--enable-libopus 
    
--enable-libvorbis 
    
--enable-libtheora 
    
--enable-libx264 
    
--enable-nonfree
    
libavutil      56. 18.102 / 56. 18.102
    
libavcodec     58. 20.102 / 58. 20.102
    
libavformat    58. 17.100 / 58. 17.100
    
libavdevice    58.  4.101 / 58.  4.101
    
libavfilter     7. 25.100 /  7. 25.100
    
libswscale      5.  2.100 /  5.  2.100
    
libswresample   3.  2.100 /  3.  2.100
    
libpostproc    55.  2.100 / 55.  2.100

    FFMPEG Command

    ffmpeg 
    
-i ${DIRECTORY}/${INPUT_FILE} 
    
-progress ${DIRECTORY}/transcode.log 
    
-s 1920x1080 
    
-c:v libx264 
    
-b:v 3000k 
    
-c:a aac 
    
-b:a 32k 
    
-minrate 3000k 
    
-maxrate 3000k 
    
-bufsize 6000k 
    
-g 96 
    
-keyint_min 96 
    
-sc_threshold 0 
    
-profile:v high 
    
-flags +cgop 
    
-movflags faststart 
    
-preset ultrafast 
    
-pix_fmt yuv420p 
    
${DIRECTORY}/ffmpeg_1920_1080_3000.mp4 &> ${DIRECTORY}/ffmpeg.log

    Also, I get no errors and and if I access the output files directly, they play just fine.

    I’m sure I’m not including all the information needed to troubleshoot this, so let me know if there is better information I can provide.

    What would cause FFMPEG to transcode MP4 and not MKV ?

    EDIT
    One last thing, I converted the MKV to an MP4 then used the above command and it worked. It’s like MP4 to MP4 is fine, but MKV to MP4 is broke.

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