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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
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    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

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    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
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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 (11135)

  • Face replacement by an image in video using FFMPEG android

    18 janvier 2015, par Sanat Pandey

    I am working on FFMPEG Video Conversion, I want a face replacement by my image in a video. For this subject I searched for something which I am describing below. Please let me know if I am wrong, and suggest a more proper procedure for the task.

    1) I can extract all images from a video frame by frame.

    2) Then we detect face from each image.

    3) Morph an image onto the face.

    4) Then again make a video with these images through FFMPEG.

    Am I right ? If yes then what about audio in this process ? And if wrong then where am I mistaken ?

  • Revision 3825 : L’action slide du slider de volume est intéractive, elle change le volume ...

    20 août 2010, par kent1 — Log

    L’action slide du slider de volume est intéractive, elle change le volume en temps réel

  • ffmpeg : How to replace a series of frames with a series of image files ?

    14 septembre 2020, par Arnon Weinberg

    Given a video file, start and end timestamps, there is a known number of frames between those timestamps in the video file, and I have an equal number of .png files in a directory to replace them with. The .png files are sorted as 001.png ... NNN.png. How would I go about updating the video file with the replacement frames using ffmpeg ?

    


    This is a followup to using ffmpeg to replace a single frame based on timestamp, but I'm asking about replacing multiple sequential frames based on 2 timestamps.

    


    Presumably something like :

    


    ffmpeg -i input.mp4 -i %3d.png -filter_complex "something including the timestamps 4.40,5.20" -c:a copy output.mp4


    


    I would also be okay with using frame numbers instead of timestamps if that makes things easier, and it's reasonable if start and end frames must be keyframes.

    


    Background :

    


    Many machine learning algorithms for video processing use ffmpeg to extract specific scenes from videos based on start and end timestamps, dump them into a sequence of .png files, process them in some way (denoise, deblur, colorize, annotate, inpainting, etc), and output the results into an equal number of .png files. The output frames are usually assembled into a new video file, but I would like instead to update the source video file so as to preserve audio, unedited video, and other video properties (fps, keyframes, etc).

    


    This approach will not work as-is for some categories of video processing algorithms. For example, interpolation results in more frames than were originally extracted, and upscaling results in higher-resolution images. As such, I would appreciate an explanation of any solution so that I can adapt it for such cases (or I will ask separate questions for those).

    


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