Recherche avancée

Médias (1)

Mot : - Tags -/Rennes

Autres articles (20)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

Sur d’autres sites (7206)

  • How can I use FFMPEG to extract a specific color from a video and put it over alpha ?

    28 février 2024, par Michael Macha

    I have a rendered animation which looks great, but my original file was not saved properly and has lost some of the data. I can quickly get that data back, if I can extract a specific color from the rendered video to a new file or image sequence, over either a key color or preferably transparency.

    


    Since I'm hand animating this, it's important that I automate as much as possible. I think FFMPEG could come to the rescue here and help me retrieve that data.

    


    My current line is this :

    


    ffmpeg -i ./"Light Bleeder Twirl Above.mp4" -vf "colorkey=0xe1eff9:0.1:0.1,format=rgba" -c:a copy ./out%04d.png


    


    Here, E1EFF9 is the color I'm after. It successfully extracts the handful of frames to PNG files, but it copies all of the data, not just E1EFF9.

    


    I'm not sure why colorkey isn't doing what I want it to. If someone could provide some insight, it would be much appreciated.

    


    Addendum : So, my idea worked in principle ; I did a chroma key with Kdenlive and color-to-alpha'd the black to transparency after a manual rescale. It isn't exactly the same, but it's very close and saves a lot of time. I still feel like it should most certainly have worked with FFMPEG, much faster, and would still like to know what was wrong with my script.

    


  • How to create a video with audio in Java

    11 décembre 2019, par Schred

    I am currently creating a video editor, and want to be able to export the video alongside some audio to a new MP4 file.

    I know how to export a video without any sound using humble video, a modified version of its RecordAndEncodeVideo example and also JavaCVs FFmpegFrameGrabber. However, I do not know how to :

    1. import an audio file (preferably mp3)
    2. edit it (although not necessary)
    3. and export it together with a video (preferably mp4)

    At the moment I can play sound in the application using javax.sound.sampled.Clip, but that’s about it (no exporting / writing / encoding to a file). I wouldn’t mind changing this for the purpose of being able to export it though.

    What is the best way to go about this ?

  • What kind of library can I use to edit video in real time ? [closed]

    14 avril 2020, par DepressingUtopian

    I am developing a video editor on Android (Java). For video encoding, I use a third-party library built on FFMPEG.

    



    https://github.com/tanersener/mobile-ffmpeg

    



    The problem is that everything that happens in FFMPEG is saved to disk ... For example, you cannot apply a filter to real-time video, you have to wait until the result of applying the filter is reset to disk and counted and displayed on VideoView. Tell the library with which you can apply a filter to a piece of video and see it in real time. Or for example, change the contrast of the video and see it on the VideoView.

    



    Perhaps there is a way to redirect the output stream of encoded video using FFMPEG directly to VideoView ?

    


Navigation