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Autres articles (65)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (8125)

  • How can I extract images from an MPTS video(which has 4 videos in it) from each and every video using a single command ?

    21 octobre 2019, par geo-freak

    I have an MPTS video file, which has 4 videos in it. I want to extract images from each video and store them in a directory separately. I am using ffmpeg, I have seen references from previous solved questions.

    I used below command to extract frames.

    ffmpeg -threads 8 -i input.ts -s 400x222 -qscale:v 4 -start_number 0 -vf fps=1 /storage/frames/input_1//%d.jpg /storage/frames/input_2//%d.jpg /storage/frames/input_3//%d.jpg /storage/frames/input_4//%d.jpg

    But frames extracted only for first video in MPTS stream. How can I achieve using this using a single ffmpeg command ?

  • Generate frame images from video and compile them back to the video in-memory

    24 septembre 2020, par gumkins

    I have to remove some repeating frames from the beginning of a video file.

    


    For that I'm generating frame images from the video

    


    ffmpeg -i input.mp4 -qscale:v 2 frame_%04d.jpg

    


    This command generates a set of files with index in name. Then I'm analyzing frames against some criteria programmaticaly, removing useless ones and compiling the rest back to the video file

    


    ffmpeg -r 60 -start_number 0 -i "frame_%04d.jpg" -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4

    


    What I don't like in this schema that IO operations take part in the process. I would like to generate an array of buffers with binary data, then process it with Javascript and then pipe filtered ones back to ffmpeg without using the file system.

    


    Does ffmpeg have such possibility ?

    


  • FFMpeg/other video library - How to segment a video file into a stream of playable segments ?

    27 juin 2012, par Anders Branderud

    I want FFMpeg/other video library to create several segments out of an original video file ; and a meta data-file containing the name of the segments and other data required in order to play them as a stream.
    The files should be created in such a way that the segments can be played as a stream without any noticable glitches in the overlap of the media files.

    I also want to know what command to use for a media player to take and interpret the meta data-file and to play the video segments in their right order.

    I have managed to do this with GPAC.

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