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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • 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 (...)

Sur d’autres sites (4938)

  • FFMPEG Flutter - Generating video from images not playing on default android video players

    17 février 2023, par Abdullah Riaz

    I'm trying to generate a video from multiple image files in FFMPEG Flutter. I'm using https-gpl package.

    


    ffmpeg_kit_flutter_https_gpl: 5.1.0


    


    I'm using this command.

    


     "-f concat -safe 0 -protocol_whitelist file,http,https,tcp,tls,crypto -i $filePath -stream_loop -1 -i $musicFile -vf 'scale=3840:2880:force_original_aspect_ratio=decrease,pad=3840:2880:(ow-iw)/2:(oh-ih)/2,setsar=1' -r 6 -c:v libx264 -crf 40 -profile:v main -preset veryfast -pix_fmt yuv420p -t $totalTime $outputFilePath"


    


    Where you can clearly see, I'm encoding video in libx264 with yuv420p.

    


    The thing is, the video is created successfully and played smoothly on the VLC. But it doesn't show anything on normal/default android video players although it plays the audio.

    


    I've tried multiple things but all failed to run video on default android video players. I've even tried multiple android phones.
What am I doing wrong here ?

    


  • When using MoviePy to resize a video how do I know what bitrate to use to maintain quality when writing the new video to disk

    4 juillet 2016, par Michael

    Expanding on this question How To Resize a Video Clip Python about using MoviePy to resize a video.

    When it comes time to write the resized video to disk
    How do I select a bitrate value so there is as little loss of quality as possible ?

    The original video is 4.8M on disk and is .mp4

    Bit rate set when writing to disk

        clip_resized.write_videofile(ResizedClip,bitrate="5000k")

    Gives a file of 8.3MB in size

    No bit rate set

        clip_resized.write_videofile(ResizedClip)

    Gives a file of 3.3MB

  • Audio/Video de-synchronisation when playing a video on Chrome

    30 novembre 2020, par Sonia Seddiki

    I've been recently working on a project where I try to play a "custom-made" video on an HTML5 player. By custom-made, I mean I concatenate a bunch of videos together using FFmpeg concat demuxer, each of them having the same properties (FPS, bitrate, resolution, timebase, etc).

    


    Now, I'm having a few issues regarding audio/video synchronisation, with a twist : it does not happen on every video player. The video is perfectly synchronised when read on Firefox, but not on Chrome. It is synchronised when read on a "local" video player like VLC.

    


    I assume it has to do with how the video data is presented to the player. I read a little about PTS, DTS, I-P-B frames and I guess the final output may be a little messed up ? But I don't really have a strong lead to follow here.

    


    I tried to find info on how the HTML5 player was implemented by both browsers, but couldn't find much (again, I'm probably not googling this right). Does anyone here know a bit more about the technical aspect of how a video is actually played in a browser ? Or any clue as to why this de-synchronisation doesn't happen on every platform ?

    


    Thank you so much for your help !

    


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