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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

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (6003)

  • MP4 to DASH (bash script)

    18 mars 2019, par Francesco Galgani

    I have a web site in which users can upload video files. I want to stream all of them using DASH to obtain an adaptive bitrate streaming. So I wrote a bash script (to run by cron) that converts all mp4 files to DASH, but it doesn’t work properly : what is wrong ?

    For example, using the following script, I obtained :
    https://www.informatica-libera.net/dash_faq/stream.mpd

    It validates, but it doesn’t play. I tested it on :
    http://dash-mse-test.appspot.com/dash-player.html?url=https%3A%2F%2Fwww.informatica-libera.net%2Fdash_faq%2Fstream.mpd&autoplay=on&adapt=auto&flavor=

    Thank you for any help.
    The code :

    #!/bin/bash
    

    
# THIS SCRIPT CONVERTS EVERY MP4 (IN THE CURRENT FOLDER AND SUBFOLDER)
    
# TO A MULTI-BITRATE VIDEO IN MP4-DASH
    
# For each file "videoname.mp4" it creates a folder "dash_videoname" 
    
# containing a dash manifest file "stream.mpd" and subfolders containing 
    
# video segments.
    

    
# mp4dash documentation and download: https://www.bento4.com/developers/dash/
    

    
MYDIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))
    
SAVEDIR=$(pwd)
    

    
# Check programs
    
if [ -z "$(which ffmpeg)" ]; then
    
    echo "Error: ffmpeg is not installed"
    
    exit 1
    
fi
    

    
if [ -z "$(which mp4dash)" ]; then
    
    echo "Error: mp4dash is not installed"
    
    exit 1
    
fi
    

    
cd "$MYDIR"
    

    
TARGET_FILES=$(find ./ -type f -name "*.mp4")
    
for f in $TARGET_FILES
    
do
    
  f=$(basename "$f") # fullname of the file
    
  f="${f%.*}" # name without extension
    

    
  if [ ! -d "dash_${f}" ]; then
    
    echo "Converting \"$f\" to multi-bitrate video in MPEG-DASH"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 1500k -vf "scale=-2:720" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 1500k -vf "scale=-2:720" -f mp4 -pass 2 "${f}_1500.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 800k -vf "scale=-2:540" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 800k -vf "scale=-2:540" -f mp4 -pass 2 "${f}_800.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 400k -vf "scale=-2:360" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 400k -vf "scale=-2:360" -f mp4 -pass 2 "${f}_400.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 200k -vf "scale=-2:180" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 200k -vf "scale=-2:180" -f mp4 -pass 2 "${f}_200.mp4"
    

    
    rm -f ffmpeg*log*
    

    
    mp4fragment "${f}_1500.mp4" "${f}_1500_fragmented.mp4"
    
    mp4fragment "${f}_800.mp4" "${f}_800_fragmented.mp4"
    
    mp4fragment "${f}_400.mp4" "${f}_400_fragmented.mp4"
    
    mp4fragment "${f}_200.mp4" "${f}_200_fragmented.mp4"
    

    
    rm -f "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4" "${f}_200.mp4"
    

    
    mp4dash -v -o "dash_${f}" "${f}_1500_fragmented.mp4" "${f}_800_fragmented.mp4" "${f}_400_fragmented.mp4" "${f}_200_fragmented.mp4"
    

    
    rm -f "${f}_1500_fragmented.mp4" "${f}_800_fragmented.mp4" "${f}_400_fragmented.mp4" "${f}_200_fragmented.mp4"
    

    
    fi
    

    
done
    

    
cd "$SAVEDIR"

  • MP4 to DASH (bash script)

    13 mars 2017, par francesco.galgani

    I have a web site in which users can upload video files. I want to stream all of them using DASH to obtain an adaptive bitrate streaming. So I wrote a bash script (to run by cron) that converts all mp4 files to DASH, but it doesn’t work properly : what is wrong ?

    For example, using the following script, I obtained :
    https://www.informatica-libera.net/dash_faq/stream.mpd

    It validates, but it doesn’t play. I tested it on :
    http://dash-mse-test.appspot.com/dash-player.html?url=https%3A%2F%2Fwww.informatica-libera.net%2Fdash_faq%2Fstream.mpd&autoplay=on&adapt=auto&flavor=

    Thank you for any help.
    The code :

    #!/bin/bash
    

    
# THIS SCRIPT CONVERTS EVERY MP4 (IN THE CURRENT FOLDER AND SUBFOLDER)
    
# TO A MULTI-BITRATE VIDEO IN MP4-DASH
    
# For each file "videoname.mp4" it creates a folder "dash_videoname" 
    
# containing a dash manifest file "stream.mpd" and subfolders containing 
    
# video segments.
    

    
# mp4dash documentation and download: https://www.bento4.com/developers/dash/
    

    
MYDIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))
    
SAVEDIR=$(pwd)
    

    
# Check programs
    
if [ -z "$(which ffmpeg)" ]; then
    
    echo "Error: ffmpeg is not installed"
    
    exit 1
    
fi
    

    
if [ -z "$(which mp4dash)" ]; then
    
    echo "Error: mp4dash is not installed"
    
    exit 1
    
fi
    

    
cd "$MYDIR"
    

    
TARGET_FILES=$(find ./ -type f -name "*.mp4")
    
for f in $TARGET_FILES
    
do
    
  f=$(basename "$f") # fullname of the file
    
  f="${f%.*}" # name without extension
    

    
  if [ ! -d "dash_${f}" ]; then
    
    echo "Converting \"$f\" to multi-bitrate video in MPEG-DASH"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 1500k -vf "scale=-2:720" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 1500k -vf "scale=-2:720" -f mp4 -pass 2 "${f}_1500.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 800k -vf "scale=-2:540" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 800k -vf "scale=-2:540" -f mp4 -pass 2 "${f}_800.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 400k -vf "scale=-2:360" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 400k -vf "scale=-2:360" -f mp4 -pass 2 "${f}_400.mp4"
    

    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 200k -vf "scale=-2:180" -f mp4 -pass 1 -y /dev/null
    
    ffmpeg -y -i "${f}.mp4" -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 200k -vf "scale=-2:180" -f mp4 -pass 2 "${f}_200.mp4"
    

    
    rm -f ffmpeg*log*
    

    
    mp4fragment "${f}_1500.mp4" "${f}_1500_fragmented.mp4"
    
    mp4fragment "${f}_800.mp4" "${f}_800_fragmented.mp4"
    
    mp4fragment "${f}_400.mp4" "${f}_400_fragmented.mp4"
    
    mp4fragment "${f}_200.mp4" "${f}_200_fragmented.mp4"
    

    
    rm -f "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4" "${f}_200.mp4"
    

    
    mp4dash -v -o "dash_${f}" "${f}_1500_fragmented.mp4" "${f}_800_fragmented.mp4" "${f}_400_fragmented.mp4" "${f}_200_fragmented.mp4"
    

    
    rm -f "${f}_1500_fragmented.mp4" "${f}_800_fragmented.mp4" "${f}_400_fragmented.mp4" "${f}_200_fragmented.mp4"
    

    
    fi
    

    
done
    

    
cd "$SAVEDIR"

  • change max Buffer Length in MPEG-dash format

    17 novembre 2020, par ADL

    I'm trying to change the max buffer length on my video streaming in clappr video player.
I know that in HLS format the way to do it is like this :

    


    player = new Clappr.Player({
      playback: {
        hlsjsConfig: {
         maxMaxBufferLength: 30
      }}})


    


    And it's realy working for HLS videos,
I'm looking for equivalent way to do it with MPEG-dash foramt

    


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