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Autres articles (93)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

  • 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 (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (12628)

  • Live Video Chat for iPhone and HTTP Live Streaming

    14 janvier 2024, par mayuur

    I want to make an app which has video chat functionality for iPhone. But after many searches, I am still not able to find any successful results. Is there any public or even for that matter, private API available for doing this on iPhone ? If you have an YES answer, please help me.

    


    Basically, what I want is to read the streams of the video on both the devices connected for chatting. Please help me if you can.

    


    p.s - I have already checked iDoubs but it failed and always shows some unknown problem and for that reason, doesn't allow me to connect to anyone.

    


    ALSO : The suggested method I have found is via HTTP Live Streaming. But, in that too, I have multiple doubts.

    


    1.) I need to find how do I upload my video from iPhone to the HTTP server from where I would be broadcasting ?

    


    2.) Can you please post something related to setting up the server ? How do I feed the video to the FFMPEG Server ?

    


    Mainly, I need to find the upload method. I am right now simply sending hex-code in the form of NSDATA to the server and I am stuck there. The main problem is, It is live. How do I handle that ?

    


    It would be best, if you could help me make the iDoubs work properly.

    


  • Burning subtitles into video with ffmpeg with specific margin not working

    17 mai 2024, par Anthony

    I am trying to build a tool where people can position their subtitles on an HTML5 video and then I will burn the subtitles into the video for them.

    


    I can easily get the position of the subtitles, in whatever format I need, that's easy. However, no combination of values that I feed to ffmpeg are working.

    


    My holy grail is an x and y offest (aka offset 5% from the left, 10% from the bottom, in terms of video height/width).

    


    To achieve this, I would like the subtitles to start in the very bottom-left corner.

    


    ffmpeg -y -i english.mp4 -vf "subtitles=english.srt:force_style='Alignment=1,OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,FontName=Arial,FontSize=24,MarginL=140,MarginV=0'"  -c:v libx264 -crf 23 -c:a copy output_video.mp4


    


    Here is something that is approaching working, but it's behaving very strangely. The video is 850x480 but when I do a margin of 140 it goes way past the midway point of the video.

    


    Am I missing something ? How can I start the margin in the bottom left, and then apply the margin I want to push it away from the left and away from the bottom ? I can do it either as a percentage of the video height/width if that API is supported or just pixels is fine too (but clearly doesn't seem to be working)

    


  • FFmpeg throwing error during video render process using Remotion

    31 mai 2022, par Vince

    I'm using a tool called Remotion, which allows you to create videos using javascript (node & react). I have the server-side rendering process working, unless I try to include an mp3. Per their docs, I have my audio imported like this :

    


    import goodtimes from &#x27;../../music/GoodTimes.mp3&#x27;;&#xA;&#xA;...&#xA;&#xA;<audio src="{goodtimes}"></audio>&#xA;

    &#xA;

    I'm currently trying to troubleshoot this using the CLI, because the error messaging is better. The command runs, and seems to generate the full video – 2400 out of 2400 frames. But then it fails with this output :

    &#xA;

    (2/3) [====================] Rendered frames (6x) 176540ms&#xA;    &#x2B; [====================] Downloading http://localhost:3000/1ba90857580e6291.mp3&#xA;(3/3) [====================] Encoding video 2400/2400&#xA;An error occurred:&#xA;Error: Command failed with exit code 1: ffprobe -v error -show_entries stream=channels:format=duration -of default=nw=1 /var/folders/6n/_nfb38t53dgdj092_pcnqqmw0000gn/T/remotion-assets-dir2jc2oppruh/7744374580215663.mp3&#xA;[mp3 @ 0x7fa78152ec40] Failed to read frame size: Could not seek to 5244.&#xA;/var/folders/6n/_nfb38t53dgdj092_pcnqqmw0000gn/T/remotion-assets-dir2jc2oppruh/7744374580215663.mp3: Invalid argument&#xA;    at makeError (/Users/voverson/clm-video/server/node_modules/execa/lib/error.js:60:11)&#xA;    at handlePromise (/Users/voverson/clm-video/server/node_modules/execa/index.js:118:26)&#xA;    at runMicrotasks (<anonymous>)&#xA;    at processTicksAndRejections (internal/process/task_queues.js:93:5)&#xA;    at async getAudioChannelsAndDuration (/Users/voverson/clm-video/server/node_modules/@remotion/renderer/dist/assets/get-audio-channels.js:17:18)&#xA;    at async preprocessAudioTrackUnlimited (/Users/voverson/clm-video/server/node_modules/@remotion/renderer/dist/preprocess-audio-track.js:14:36)&#xA;</anonymous>

    &#xA;

    I'm hoping some ffmpeg experts might recognize this error and have some idea what might be causing it.

    &#xA;

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