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Autres articles (63)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • Possibilité de déploiement en ferme

    12 avril 2011, par

    MediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
    Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...)

Sur d’autres sites (6690)

  • Play h.264 video stream in html page

    12 juin 2017, par e2l3n

    I am using ffmpeg and vlc on linux to produce MPEG transport stream (mpegts) over HTTP. Basically ffmpeg captures the screen and produces h.264 stream using mpegts and then vlc is used as a server that delivers the stream over http. That’s how I manage to accomplish this.

    ffmpeg -f x11grab -s 1280x800 -r 30 -i :0.0+0,0  -f alsa -ac 2 -i pulse -vcodec libx264 -preset ultrafast -s 1280x800 -threads 0 -f mpegts - | vlc -I dummy - --sout '#std{access=http,mux=ts,dst=:3030}

    And some useful log about the resulting stream :

    Output #0, mpegts, to 'pipe:':
    
  Metadata:
    
    encoder         : Lavf57.72.101
    
    Stream #0:0: Video: h264 (libx264), yuv444p(progressive), 1280x800, q=-1--1, 30 fps, 90k tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc57.96.101 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Metadata:
    
      encoder         : Lavc57.96.101 mp2

    All looks good except for that I am unable to play the stream in a HTML page. Could someone point me at some solution to either render the stream in HTML page or change the stream type so that it gets rendered.
    Thank you in advance !

    EDIT :
    I’ve noticed something weird. The <video></video> fails to play mp4 files on Firefox (51.0.1) for Ubuntu (I have also tested on Windows 8 with Chrome).
    I simply use ffmpeg to record screen for 10 seconds and produce .mp4 video (see below).

    ffmpeg -video_size 1280x800 -framerate 25 -f x11grab -i :0.0+0,0 -t 00:00:10 ~/Workspace/videostream/output.mp4

    And then play the output.mp4 video with the following snippet.

    <video width="480" height="320" controls="controls">
    
    <source src="output.mp4" type="video/mp4">
    
</source></video>

    This simply does not play although I can open the video with any other media player. The media info (using MediaInfo, v0.7.96) of the output.mp4 file is :

    GENERAL: MPEG-4 (Base Media): 1.007 MiB, 10s 0ms; 1 Video stream: AVC; Overall bit rate: 825 Kbps; Writing application: Lavf57.72.101
    
VIDEO: 2 343 Kbps, 1280*800(16:10), at 25.000 fps, MPEG Video (Version 2) (Main@High 1440)

    However, if I replace the output.mp4 with any other .mp4 file, it does play in Firefox. So, this leads me to conclude that it is not a browser issue but something with the way I exploit ffmpeg. Below is the media info of a proper .mp4 file that successfully runs in the browser.

    GENERAL: MPEG-4 (Base Media/Version 2): 48.4 MiB, 2mn 50s; 1 Video stream: AVC; 1 Audio stream: AAC; Overall bit mode rate: Variable; Overall bit rate: 2 385 Kbps;
    
VIDEO: 2 256 Kbps, 1280*720(16:9), at 25.000 fps, AVC (Main@L3.1) (CABAC / 3 Ref Frames); ISO media produced by Google Inc.
    
AUDIO:
    
126 Kbps, 44.1 KHz, 2 channels, AAC (LC), ISO media produced by Google Inc.

    And here is the media info of the output file that results from redirecting the h.264 mpegts stream using the ffmpeg command with -pix_fmt yuv420p ./ffmpeg -t 00:00:10 -f x11grab -s 1280x800 -r 30 -i :0.0+0,0 -pix_fmt yuv420p -vcodec libx264 -preset ultrafast -s 1280x800 -threads 0 -f mpegts - > ~/Workspace/file.ts :

    GENERAL: MPEG-TS: 2.93 MiB, 9s 960ms; 1 Video stream: MPEG Video; 1 Menu stream: MPEG Video; Overall bit rate mode: Variable; Overall bit rate: 2 465 Kbps; 
    
VIDEO: 2 343 Kbps, 1280*800(16:10), at 25.000 fps, MPEG Video (Version 2) (Main@High 1440)

  • ffmpeg for android out of memory

    15 juin 2018, par Rafael Lima

    I’m getting an weird error when enconding a video with ffmpeg on android

    Failed to inject frame into filter network: Out of memory

    Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

    This problem happens to any video recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

    this is ffmpeg output

    ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
    
  configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-06-09T04:28:55.000000Z
    
    location        : -08.0638-034.8723/
    
    location-eng    : -08.0638-034.8723/
    
    com.android.version: 7.0
    
  Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : SoundHandle
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Out of memory
    
Error while processing the decoded data for stream #0:0
    
Conversion failed!

  • ffmpeg for android out of memory

    15 juin 2018, par Rafael Lima

    I’m getting an weird error when enconding a video with ffmpeg on android

    Failed to inject frame into filter network: Out of memory

    Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

    This problem happens to any video recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

    this is ffmpeg output

    ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
    
  configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-06-09T04:28:55.000000Z
    
    location        : -08.0638-034.8723/
    
    location-eng    : -08.0638-034.8723/
    
    com.android.version: 7.0
    
  Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : SoundHandle
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Out of memory
    
Error while processing the decoded data for stream #0:0
    
Conversion failed!

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