Recherche avancée

Médias (0)

Mot : - Tags -/api

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (99)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    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 (...)

  • 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.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

Sur d’autres sites (11354)

  • ffmpeg drawtext leading space characters in text are getting ignored

    4 novembre 2017, par yoda89

    I am using the below arguments for drawtext in ffmpeg

    ffmpeg -i input.gif -vf drawtext="fontfile='ariblk.ttf':text='    Hello World':x=10:y=10:fontsize=30:fontcolor=white" output.gif

    notice the spaces before the text specified in argument, but in output the spaces before the text are getting ignored.
    So how could I stop ffmpeg from doing that.

  • c++ mp3 library

    31 mai 2012, par user1288043

    I am exhausted searching for a c++ mp3 decoding library, preferably free (like lgpl) and cross-platform or for windows and mac. Can anyone suggest such library and post some tutorial for using it ?
    ffmpeg and sdl (sdl_sound, sdl_mixer) aren't compiling. I am unable to get mpg123 working - is it for linux world only or what ? Is there some tutorial on using mpg123 on windows ? mpg123 is unable to find some symbols that is I am not putting some dll's at right path - but which ?

    Overall, I want be able to read and write all major audio file formats on windows and mac - starting with windows.

  • DASH package (mpd) I made freezes after raising the onratechange event

    7 mars 2016, par Nick Birke

    I am trying to created an adaptive stream from an mp4 file. I have a decent amount of experience at doing streaming, and have successfully implemented smooth streaming via Silverlight. We want a solution for everything that works in HTML5. I am pursuing DASH. So here are the steps I take...

    1. Resample the mp4 to different sizes using ffmpeg.
    2. Ensure the files are properly fragmented using Bento4s mp4Fragment utility.
    3. Create the DASH mpd file and associated segments using Bento4s mp4dash utility.

    I have done a lot of work to learn each of these utilities and create a process that gets to output that I think will work. To create reliable DASH artifacts. But it seems I am doing something wrong. Here are examples of command lines I run.

    For step one I create three different files... for three different rates and sizes... (these may not be the exact command lines, they are from old notes... but the parameter values are the ones I am using for sure)

    ffmpeg -y -i C:\_SIMULATED_SHARE_C\ff\big_buck_bunny.mp4 -c:v libx264 -x264opts keyint=24:min-keyint=24:no-scenecut -b:v 1500k -maxrate 1500k -bufsize 1000k -vf "scale=-1:720" C:\_SIMULATED_SHARE_C\ff\output\outputfile720.mp4
    

    
ffmpeg -y -i C:\_SIMULATED_SHARE_C\ff\big_buck_bunny.mp4 -c:v libx264 -x264opts keyint=24:min-keyint=24:no-scenecut -b:v 800k -maxrate 800k -bufsize 500k -vf "scale=-1:540" C:\_SIMULATED_SHARE_C\ff\output\outputfile540.mp4
    

    
ffmpeg -y -i C:\_SIMULATED_SHARE_C\ff\big_buck_bunny.mp4 -c:v libx264 -x264opts keyint=24:min-keyint=24:no-scenecut -b:v 400k -maxrate 400k -bufsize 400k -vf "scale=-1:360" C:\_SIMULATED_SHARE_C\ff\output\outputfile360.mp4

    So that gives you the three files that need to be fragmented. So I fragment them using the mp4fragment utility from Bento4. That command line is simple so I will not offer an example.

    The I use Bento4s mp4dash to create the dash. Something like this...

    "E:\\_INSTALL\\Bento4\\Bento4-SDK-1-4-3-607.x86-microsoft-win32-vs2010\\Bento4-SDK-1-4-3-607.x86-microsoft-win32-vs2010\\bin\\mp4dash.exe --mpd-name=\"\\\\d9fqt52\\_SIMULATED_SHARE_C\\ff\\output\\dash\\something.mpd\" -f -o \"\\\\d9fqt52\\_SIMULATED_SHARE_C\\ff\\output\\dash\" \"\\\\d9fqt52\\_SIMULATED_SHARE_C\\ff\\output\\bunny360f.mp4\" \"\\\\d9fqt52\\_SIMULATED_SHARE_C\\ff\\output\\bunny540f.mp4\" \"\\\\d9fqt52\\_SIMULATED_SHARE_C\\ff\\output\\bunny720f.mp4\" "

    This runs ok. And creates the mpd file, an audio folder with segment files, an a video folder with 3 folders each with the segment files.

    I am able to configure IIS to play the mpd ok. As well as the segement files. The video plays fine... and then it stops. It freezes between 50 and 60 seconds. Right before it freezes I can confirm that the onratechange event of the HTML5 video tag is raised. This is an event that is raised with the rate of play is changed. I do nothing to change this it just happens.

    The actual video in question is about 1hr long. Also I am using the dash.js library as a player.

    If you can identify any components or specifics I should change please let me know !

    UPDATE ON MAR 7, 2016

    As requested here is the MPD content...

    <?xml version="1.0" ?>
    
<mpd mediapresentationduration="PT51M51.909S" minbuffertime="PT0.80S" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" xmlns="urn:mpeg:dash:schema:mpd:2011">
    
  
    
  <period>
    
    
    
    <adaptationset lang="en" mimetype="audio/mp4" segmentalignment="true" startwithsap="1">
    
      <segmenttemplate duration="801" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4f" startnumber="1" timescale="1000"></segmenttemplate>
    
      <representation audiosamplingrate="48000" bandwidth="132491" codecs="mp4a.40.2">
    
        <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
    
      </representation>
    
    </adaptationset>
    
    
    
    <adaptationset maxheight="720" maxwidth="1280" mimetype="video/mp4" minheight="540" minwidth="640" segmentalignment="true" startwithsap="1">
    
      <segmenttemplate duration="801" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4f" startnumber="1" timescale="1000"></segmenttemplate>
    
      <representation bandwidth="785536" codecs="avc1.64001F" framerate="30000/1001" height="540" scantype="progressive" width="960"></representation>
    
      <representation bandwidth="403537" codecs="avc1.64001E" framerate="30000/1001" height="360" scantype="progressive" width="640"></representation>
    
      <representation bandwidth="1496514" codecs="avc1.64001F" framerate="30000/1001" height="720" scantype="progressive" width="1280"></representation>
    
    </adaptationset>
    
  </period>
    
</mpd>

    UPDATE ON MAR 7, 2016

    Here is the console output for two different videos that just stop for some unknown reason between 50 and 60s

    ///ABS VIDEO 
    

    
58393][rulesController] [RULES]: playbackTimeRule [Fragment:download,82,MediaSegment,0video] Default 
    
dash.all.js:11 [58395][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,82,MediaSegment,0,video] Default 
    
dash.all.js:11 [58401][indexHandler][audio] Getting the request for time: 82.082 
    
dash.all.js:11 [58403][indexHandler][audio] Index for time 82.082 is 81 
    
dash.all.js:11 [58405][indexHandler][audio] SegmentTemplate: 81.08099999999999 / 1361.235 
    
dash.all.js:11 [58406][indexHandler][audio] SegmentTemplate: 82.082 / 1361.235 
    
dash.all.js:11 [58407][rulesController] [RULES]: playbackTimeRule [Fragment:download,82,MediaSegment,0audio] Default 
    
dash.all.js:11 [58417][fragmentLoader] loaded video:MediaSegment:82.082 (200, 18ms, 2ms) 
    
dash.all.js:11 [58419][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,82,MediaSegment,0,audio] Default 
    
dash.all.js:11 [58435][fragmentLoader] loaded audio:MediaSegment:82.082 (200, 14ms, 0ms) 
    
dash.all.js:11 [59390][indexHandler][video] Getting the request for time: 83.083 
    
dash.all.js:11 [59392][indexHandler][video] Index for time 83.083 is 82 
    
dash.all.js:11 [59393][indexHandler][video] SegmentTemplate: 82.082 / 1361.235 
    
dash.all.js:11 [59394][indexHandler][video] SegmentTemplate: 83.08299999999998 / 1361.235 
    
dash.all.js:11 [59395][rulesController] [RULES]: playbackTimeRule [Fragment:download,83,MediaSegment,0video] Default 
    
dash.all.js:11 [59396][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,83,MediaSegment,0,video] Default 
    
dash.all.js:11 [59401][indexHandler][audio] Getting the request for time: 83.083 
    
dash.all.js:11 [59403][indexHandler][audio] Index for time 83.083 is 82 
    
dash.all.js:11 [59404][indexHandler][audio] SegmentTemplate: 82.082 / 1361.235 
    
dash.all.js:11 [59406][indexHandler][audio] SegmentTemplate: 83.08299999999998 / 1361.235 
    
dash.all.js:11 [59408][rulesController] [RULES]: playbackTimeRule [Fragment:download,83,MediaSegment,0audio] Default 
    
dash.all.js:11 [59416][fragmentLoader] loaded video:MediaSegment:83.08299999999998 (200, 17ms, 1ms) 
    
dash.all.js:11 [59418][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,83,MediaSegment,0,audio] Default 
    
dash.all.js:11 [59437][fragmentLoader] loaded audio:MediaSegment:83.08299999999998 (200, 14ms, 1ms) 
    
dash.all.js:11 [59902][scheduleController][video] Stalling Buffer 
    
dash.all.js:11 [59903][bufferController][video] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [59906][scheduleController][audio] Stalling Buffer 
    
dash.all.js:11 [59907][bufferController][audio] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [63684][playbackController] <video> ratechange:  0 
    

    

    

    

    
///HOG VIDEO
    

    
[58250][rulesController] [RULES]: playbackTimeRule [Fragment:download,105,MediaSegment,0audio] Default 
    
dash.all.js:11 [58266][fragmentLoader] loaded video:MediaSegment:84.105 (200, 28ms, 1ms) 
    
dash.all.js:11 [58269][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,105,MediaSegment,0,audio] Default 
    
dash.all.js:11 [58287][fragmentLoader] loaded audio:MediaSegment:84.105 (200, 14ms, 1ms) 
    
dash.all.js:11 [58982][indexHandler][video] Getting the request for time: 84.906 
    
dash.all.js:11 [58983][indexHandler][video] Index for time 84.906 is 105 
    
dash.all.js:11 [58984][indexHandler][video] SegmentTemplate: 84.105 / 3111.909 
    
dash.all.js:11 [58984][indexHandler][video] SegmentTemplate: 84.906 / 3111.909 
    
dash.all.js:11 [58985][rulesController] [RULES]: playbackTimeRule [Fragment:download,106,MediaSegment,0video] Default 
    
dash.all.js:11 [58986][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,106,MediaSegment,0,video] Default 
    
dash.all.js:11 [58989][indexHandler][audio] Getting the request for time: 84.906 
    
dash.all.js:11 [58990][indexHandler][audio] Index for time 84.906 is 105 
    
dash.all.js:11 [58991][indexHandler][audio] SegmentTemplate: 84.105 / 3111.909 
    
dash.all.js:11 [58992][indexHandler][audio] SegmentTemplate: 84.906 / 3111.909 
    
dash.all.js:11 [58993][rulesController] [RULES]: playbackTimeRule [Fragment:download,106,MediaSegment,0audio] Default 
    
dash.all.js:11 [59002][fragmentLoader] loaded video:MediaSegment:84.906 (200, 14ms, 1ms) 
    
dash.all.js:11 [59003][rulesController] [RULES]: sameTimeRequestRule [Fragment:download,106,MediaSegment,0,audio] Default 
    
dash.all.js:11 [59014][fragmentLoader] loaded audio:MediaSegment:84.906 (200, 8ms, 1ms) 
    
dash.all.js:11 [59735][scheduleController][video] Stalling Buffer 
    
dash.all.js:11 [59736][bufferController][video] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [59738][scheduleController][audio] Stalling Buffer 
    
dash.all.js:11 [59739][bufferController][audio] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [61695][playbackController] <video> ratechange:  0 
    
</video></video>

Navigation