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Médias (3)

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Autres articles (52)

  • (Dés)Activation de fonctionnalités (plugins)

    18 février 2011, par

    Pour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
    SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
    Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
    MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (8265)

  • Displaying text on video while recording and if saved then also (add text to video when start recording)

    25 novembre 2017, par J4GD33P 51NGH

    i’m using this android project from git hub and now want to add text to video when start recording. text should also there if we watch saved video later. can anyone suggest me an idea to do this.

  • Displaying text on video while recording and if saved then also(add text to video when start recording)

    25 novembre 2017, par J4GD33P 51NGH

    i’m using this android project from git hub and now want to add text to video when start recording. text should also there if we watch saved video later. can anyone suggest me an idea to do this.

  • Issue with MJPEG stream playback speed when encoding with FFmpeg

    6 janvier, par Arciiix

    I'm working with a MJPEG stream source

    


    Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn

    


    I want to capture this stream and save it to an MP4 file using FFmpeg, but I am running into a weird issue.

    


    The only way it works fine is when I just copy the stream without reencoding and using wallclock as timestamps (cmd 1) :

    


    ffmpeg -use_wallclock_as_timestamps 1 -i "http://IP/video/1280x720" -c:v copy output_good.mp4


    


    However, when I try encoding the stream with libx264, the playback speed of the resulting video becomes slower than 100%, causing the video to gradually fall out of sync with real-time. This happens even when I use any encoding, also when I explicitly set the frame rate or vsync. For example, these commands fail :

    


      

    • CMD 2 : ffmpeg -i "http://IP/video/1280x720" -c:v libx264 -r 30 -preset fast output_bad1.mp4

      • 


    • CMD 3 : ffmpeg -use_wallclock_as_timestamps 1 -i "http://IP/video/1280x720" -c:v libx264 output.mp4

      • 


    


    https://www.youtube.com/watch?v=PF0fuCu7Xao

    


    As you can see in the comparison of the resulting videos, the playback gradually slows down with CMD 2 and CMD 3, while it's alright with CMD 1.

    


    What I've noticed is that on the FFmpeg stdout, when using encoding, the speed= and FPS= go up and up, e.g. to 31 FPS even though my source is technically at 25 FPS.

    


    What I've tried :

    


      

    • different encoding codecs (e.g. libvpx)

      • 


    • -re

      • 


    • preset ultrafast on encoding

      • 


    • vsync (fps_mode), both ctr and vfr

      • 


    • fps=30 filter

      • 


    


    Has anyone encountered a similar issue or know how to force FFmpeg to preserve the correct playback speed while encoding or enforcing a frame rate ? Thanks !

    


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