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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

Sur d’autres sites (13944)

  • avcodec/libfdk-aacdec : set keyframe flag and profile in output frames

    17 novembre 2024, par James Almer
    avcodec/libfdk-aacdec : set keyframe flag and profile in output frames

    Don't depend on the generic code setting this.
    
This is in preparation for a following change.
    

    Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libavcodec/libfdk-aacdec.c

  • Correct Complex Lens Distortion in FFMPEG (or OpenCV) [closed]

    29 septembre 2024, par C.M.

    I need to process videos which were taken with a wide angle vehicle camera. A good example is this frame from a video :

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    Original Image

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    As you can see, the image is pretty distorted and I need to correct that. After some research, neither a Barrel distortion or a Pincushion distortion is the case here. I'd say it depends on the axis. The x axis seems to have a Pincushion distortion, but the y axis seems to have a Barrel distortion.

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    In my project I use a Java backend and I use FFmpeg to process the videos (re-encoding, color correction, ...). Therefore I'd like to do this in FFmpeg as another video filter.

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    I tried to use the lenscorrection filter but couldn't find any suitable values for k1 and k2. IMHO this isn't even possible since the filter can only handle the two types of distortion mentioned above. Here are two examples where I tried to correct the horizontal and vertical elements of the image :

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    k1= -0.7, k2=0.4

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    (with k1= -0.7, k2=0.4)

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    k1=0.7

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    (with k1=0.7)

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    But the resulting image would need to look like this (just roughly edited with GIMP) :

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    How it should look like

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    Is this even possible with FFmpeg filters ? I already tried out the v360 filter (similar like in this article) but just achieved similar results.

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    If I'm correct this isn't possible with video filters. So I thought of doing this in OpenCV in Java by extracting all the frames with FFmpeg, transforming them with OpenCV and rendering them to a video again. Unfortunately I have no experience with OpenCV and couldn't get any results. I think this should be possible in some way.

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    Can someone help me ?

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  • vulkan_video : add utilities for H264 level/profile mapping

    30 août 2024, par Lynne
    vulkan_video : add utilities for H264 level/profile mapping
    • [DH] libavcodec/vulkan_video.c
    • [DH] libavcodec/vulkan_video.h

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