Recherche avancée

Médias (91)

Autres articles (106)

  • 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

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Qu’est ce qu’un masque de formulaire

    13 juin 2013, par

    Un masque de formulaire consiste en la personnalisation du formulaire de mise en ligne des médias, rubriques, actualités, éditoriaux et liens vers des sites.
    Chaque formulaire de publication d’objet peut donc être personnalisé.
    Pour accéder à la personnalisation des champs de formulaires, il est nécessaire d’aller dans l’administration de votre MediaSPIP puis de sélectionner "Configuration des masques de formulaires".
    Sélectionnez ensuite le formulaire à modifier en cliquant sur sont type d’objet. (...)

Sur d’autres sites (11709)

  • ffmpeg distributed transcoding

    23 juillet 2020, par Kalava

    I have a 100GB 1080p video file which I want to transcode to 720 h264. Since transcoding is computationally expensive, i wanted to transcode smaller portions of video & stitch it back together. Can we use ffmpeg seek to transcode 10seconds of video & stitch it back together ? When I am reading through blogs they mention to go with GOP. I want to get opinion with below approach. Any help is appreciated.

    


    ffmpeg -ss 00:00:00 -i 80Gb.mp4 -t 10  -s 720x720 -c:v libx264 -c:a aac chunk1.mp4 
ffmpeg -ss 00:00:10 -i 80Gb.mp4 -t 10 -s 720x720 -c:v libx264 -c:a aac chunk2.mp4
ffmpeg -ss 00:00:20 -i 80Gb.mp4 -t 10 -s 720x720 -c:v libx264 -c:a aac chunk2.mp4


    


    ...

    


  • Is it possible to "lossless"-ly speed up a video ?

    15 novembre 2020, par Synn Ko

    Might sound like a strange question, but hear me out. I have hours of video I want to cut up and edit together, but a lot of it is just junk I don't need. I don't want to lose any quality, so I use LosslessCut.

    


    The problem for me is that it's... A LOT of footage, and I don't need to see every single second of it. It would be nice if LosslessCut had a button to change the speed of the playback, but it doesn't have that.

    


    So another idea would be to speed up all the videos in advance with ffmpeg, cut them up using LosslessCut, then change the remaining clips back to their original speed using ffmpeg again. Is it possible to speed up a video and change it back to its original speed without losing any quality or changing the video ?

    


  • C# binaryreader and binarywriter any file

    19 janvier 2016, par Jökull Snær Gylfason

    I am trying to create a video using ffmpeg and I have managed it but my purpose is to create a raw video from a byte array that i have created and put it to youtube and be able to get it back raw but now because I could only get raw video through avi the youtube compression algorithm is messing up my data. I am not sure if it is even possible to get through youtube and back without any loss of data but I would like to know if it is and if I can make an mp4 video with no loss of data
    Im using ffmpeg videofilewriter

    writer.Open("test.avi", 320, 240, 25, VideoCodec.Raw, 10);

    And then I am just running it through a few for loops witch creates a bitmap and sets it in the frame

    Bitmap image = new Bitmap(width, height, PixelFormat.Format32bppPArgb);

    maybe I could somehow edit the mp4 file

Navigation