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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

Sur d’autres sites (8914)

  • What's the difference with crf and qp in ffmpeg ?

    12 novembre 2024, par Nova

    I read https://trac.ffmpeg.org/wiki/Encode/H.264 about h264 encoding and discovered qp.

    


    Q1 : What are the differences with crf and qp ?
    
Q2 : Is it better to use qp over crf overall, or is it only if for using qp 0 for best lossless ?
    
Q3 : Does qp have a known sensible setting if it's preferred ? So far, I know crf has the default value of 23 while 18 is a sensible preferred increase in quality, although I don't understand why 18 wouldn't be default if better sensible lossless.
    
Q4 : Would changing either of them cause incompatibility with non-ffmpeg players or just qp ?

    


    I'm converting from webm to mp4.

    


    I was going to test crf 23 and 18 and pick which is best but I can't seem to find any concrete information on this comparison or about qp.

    


  • FFMpeg + Beanstalk : How to pass the processes to it or achieve the same result without using Beanstalk

    6 avril 2017, par Ilia Rostovtsev

    My problem is that FFMpeg and Mencoder are extremely resourceful and running even one process of it makes HTTPd slow down but multiple processes of (FFMPEG /Mencoder) just hang it (HTTPd) completely. I would like my conversions to be processed with Beanstalk, for example.

    My concrete question is : How to transfer my current jobs to Beanstalk ?

    I have a simple PHP code that triggers conversion :

    RunInBackground('convert.php', array($upload, $video_id), $log_path);

    Now what would Beanstalk correct code would look like so these processes would NOT start all at the same time if multiple videos are uploaded ?

    If you believe that for my needs is better to use something else but Beanstalk and you know how to implement it, I would be still happy to see it !

    Thanks in advance,
    Ilia

  • lowest latency method to pass raw video frames from ffmpeg to gstreamer

    21 juillet 2021, par art vanderlay

    I would like to pass raw audio and video buffers from ffmpeg to gstreamer. For video a 1920x1080 25fps RGB output is what ffmpeg is producing.

    


    What is the best method to pass this from ffmpeg to gstreamer on the same hardware.

    


    The end goal is to not block either ffmpeg from outputting if gstreamer cannot take the frame and to not block gstreamer if no frames are available.

    


    For this we have looked at sockets and tcp/udp plugins. However if we get any buffering issues the gstreamer pipline will block until the buffer is clear/full.

    


    we will have multiple pairs of TX/RX running on same linux instance so stdI/O will not work.
Is there a current preferred method for this type of transfer ?

    


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