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Autres articles (32)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (5245)

  • DirectShow Encryption and Decryption Filters incorrect path leading to wrong decoding ?

    11 mai 2016, par Michael Chi Lam

    Situation : I’m creating two DirectShow Filters cryptography. I’ve written them as In place transformations however it’s not working as planned, I believe it has something to do my encoding and decoding paths. My source is an AVI and my output a encrypted MP4. (Encryption Filter) for my decryption filter I take in a mp4 and render the video. However when I attempt to render the video, the play back is a black screen.

    AVI to MP4 on GraphStudioNext :
    enter image description here

    MP4 to Video Renderer :
    enter image description here

    Both of them works, however when I insert my Cryptography(This is the encryption, I got lazy and didn’t rename it properly) and Decryption filter respectively it doesn’t work

    I placed my Encrypt and Decrypt side by side (See below) and it generates an mp4 that I can play back.
    enter image description here

    Question : Is there a filter I am missing on the decoding path ? (Mp4 to Render)

  • Problems with modifying encoder metadata with FFMPEG

    19 avril 2024, par yrcje

    I'm trying to change FFMPEG encoder writing application with FFMPEG -metadata and for whatever reason, it's reading the input but not actually writing anything out.

    



    -map_metadata -metadata:s:v:0 -metadata writing_application, basically every single stack overflow and stack exchange thread, but they all won't write to the file at all.

    



    ffmpeg -i x.mp4 -s 1920x1080 -r 59.94 -c:v h264_nvenc -b:v 6000k -vf yadif=1 -preset fast -fflags +bitexact -flags:v +bitexact -flags:a +bitexact -ac 2 x.mp4
ffmpeg -i x.mp4 -c:v copy -c:a copy -metadata Encoder="TeXT Encoder" -fflags +bitexact -flags:v +bitexact -flags:a +bitexact test.mp4
ffmpeg -i x.mp4 -vcodec copy -acodec copy -map_metadata out.mp4
ffmpeg -i x.mp4 -vcodec copy -acodec copy -metadata encoder="Encoder" -metadata comment="XX" testmeta.mp4
ffmpeg -i x.ts -c:v copy -c:a copy -metadata:s:v:0 h264 ISFT='TeXT' x.mp4
ffmpeg -i x.mp4 -i FFMETADATAFILE -map_metadata 1 -codec copy testcopy.mp4
ffmpeg -i x.ts -f ffmetadata FF


    



    METADATAFILE

    



    I tried to extracting the data and rewrite it back with FFMETADATAFILE but it doesn't show up. Tried forcing ffmpeg to write without any emtadata and write it back but doesn't work. Was wondering if I can write my own encoder that writes the specific encoder name, like how Handbrake/Lavf writes the encoder application into the METADATA of the video file. Or just use FFMPEG and modify the METADATA natively.

    


  • VideoJS seekable().end(0) always returns 0

    18 septembre 2022, par Clovis Nyu

    I am trying to jump to a particular timestamp of a video, but using player.currentTime(someTime) always sends the video back to the start. Upon doing some research, I found that running player.seekable().end(0) always returns 0. I realize that this might be a problem with the fact that I'm using MP4, but I've tried using

    


    ffmpeg -i input.mp4 -c copy -movflags +faststart output.mp4


    


    to fix it and it doesn't work. Below is my code

    


    &#xA;&#xA;    &#xA;&#xA;&#xA;    <source src="http://localhost:8000/some_video.mp4" type="video/mp4"></source>&#xA;    <p class="vjs-no-js">&#xA;        To view this video please enable JavaScript, and consider upgrading to a&#xA;        web browser that&#xA;        <a href="https://videojs.com/html5-video-support/" target="_blank">supports HTML5 video&#xA;    </a></p>&#xA;&#xA;&#xA;<button>Jump</button>&#xA;&#xA;<code class="echappe-js">&lt;script src=&quot;https://vjs.zencdn.net/7.7.5/video.js&quot;&gt;&lt;/script&gt;&#xA;&lt;script&gt;&amp;#xA;    var VIDEO_JS = videojs(&amp;#x27;my-video&amp;#x27;);&amp;#xA;&amp;#xA;    function jump() {&amp;#xA;        VIDEO_JS.currentTime(10);&amp;#xA;    }&amp;#xA;&lt;/script&gt;&#xA;&#xA;

    &#xA;

    For more context, the videos are taken from youtube, the audio is then split into vocals and accompaniment using spleeter, then ffmpeg is used to merge back the resulting audio files into the original video.

    &#xA;

    Any help would be appreciated. Thanks !

    &#xA;

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