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    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
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    Mediaspip core
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  • 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.
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Sur d’autres sites (7408)

  • Android-How to pass back frames from FFmpeg back to Android

    23 octobre 2013, par yarin

    It is an architecture question-i am really interesting about the answer

    I building an app with following goals :

    1.record video with effect in real time(using FFmpeg)

    2.display the customized video in real time for the user while he recording

    So,after 1 month of working...i decide to remember that goal number 2 is worth to thinking about :)
    I have a ready skeleton app that record video with effect in real time.
    but i have to preview this customized frame back to the user.

    My options (and this is my question) :

    1.Each frame that pass from onPreviewFrame(byte[] video_frame_data, Camera camera) to ffmpeg with JNI to encode-will sending back to android through the same JNI after i apply the effects(i mean : onPreviewFrame->JNI to FFMPEG->immediately apply effect->send the costumed frame back to android side for display->encode the costumed frame).

    Advantages : it is look like is the most easy to use.

    Disadvantages : use the JNI twice or the passing back the frame could consume time(i really don't now if it really big price to pay,cuz it is only byte array or int array per frame to send to android side)

    2.I heard about openGL on ndk,but i think that the surface it self created on the android side-so is it really going to be better ?
    i prefer to use other surface that i using now in java

    3.Create an video player on FFmpeg to preview each customized frame in real time.

    Thank for your helping,i hope that the first solution is available and not consume to much expensive time in terms of real time processing

  • ffmpeg nvenc gpu utilization is less than 20 percent

    13 septembre 2017, par yashar vasegh

    i use to convert videos by ffmpeg with h264_nvenc codec, currently i noticed that nvidia-smi command shows GPU utilization is less that 20 percent.

    how could i utilize more GPU and fasten the process ?

  • Superimpose audio track on plot animation

    17 février 2023, par Antoine101

    I plot a matrix in a standard matplotlib figure with imshow. Each matrix is the result of a signal processing calculation on a time signal snapshot (0.2s). I plot each snapshot one after the other (the signal is several seconds long) in a loop and record the animation with FFMPegWriter, setting the FPS so that it matches real time. The output is an MP4 file.

    


    Now, I'd like to add a soundtrack on top of it, of the time signal that was used to calculate the matrices.

    


    How would you do that ? I scrolled a lot but didn't find any suitable solution.
Any idea of libraries or packages ?

    


    Many thanks in advance.