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Autres articles (20)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (4299)

  • FFMPEG : How to save the effects (blur, adding image , ...) on the input video instead of creating a one ?

    9 juillet 2016, par Drupalist

    I need to save the effects on the current video instead of creating a one. For example this code

    ffmpeg -i input.mp4 -i logo.png -filter_complex "[1:v][0:v]scale2ref=(505/384)*ih/8:ih/8[wm][base];[wm]setsar=1[wmsar];[base][wmsar]overlay=10:10" -pix_fmt yuv420p -c:a copy output.mp4

    pastes an image on a video, but I need the image to be pasted to input.mp4 not output.mp4.

    I tried

    ffmpeg -i input.mp4 -i logo.png -filter_complex "[1:v][0:v]scale2ref=(505/384)*ih/8:ih/8[wm][base];[wm]setsar=1[wmsar];[base][wmsar]overlay=10:10" -pix_fmt yuv420p -c:a

    but it didn’t work.

    Thanks in advance.

  • Android - Adding Effects to Videos like Instagram

    10 mai 2016, par San

    I am in need of a idea to apply filters to video like Instagram, video trimming and fetching images from the video. I have researched a lot and all I can come up with is the following ways to achieve what I want :

    1. FFMPEG
    2. Open CV
    3. Camera2 API

    FFMPEG :

    As far as FFMPEG is considered, majority of the average level droid devs feel that its a pain cause it involves NDK and compiling the FFMPEG commands.The above mentioned link is self-explanatory and it saves me the pain of setting up the NDK but the biggest drawback in this is that its not stable and its REALLY slow.
    My query on this topic is that how do I compile FFMPEG into my project. I have gone through several links to integrate FFMPEG as follows :

    One

    Two

    Three

    The third link seemed to make sense but ultimately I couldn’t understand completely and go where,do what after following those steps.

    Question 1 :

    Is there is a solid Android - FFMPEG Integration Document that can help a beginner like me ?

    Open CV

    Question 2 :

    I haven’t tried Open CV yet but will it be worth it ?

    Camera2 API

    Question 3 :

    As far as I researched, I can see that the Camera2 API can help us shoot videos and images with effects added to it but will it be useful for me to process the already existing videos and images ? I don’t have the requirement to add effects to the camera while its captured, its aftermath is where I want to add my effects.

    If someone is kind enough to accept my stupidity and help me out, I am thankful to them.

    Will going ahead with FFMPEG be good or OpenCV or Camera2 API will be better ?

  • Avoid webp animations encoded with ffmpeg to loop [closed]

    9 août 2024, par Robin Navas

    I am trying to create some webp animations based on png sequence with ffmpeg. But I can't figure out how to make them play only once.

    


    I use this command but each time the animation loop infinitly.

    


    ffmpeg -i %04d.png -loop 1 output.webp

    


    Thanks !

    


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