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Autres articles (105)

  • 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

  • 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 (...)

  • 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 (7535)

  • An x264-encoded video only with P frames and a different video for I frame

    24 mai 2018, par MSD Paul

    Suppose I have 5 frames, I encode first one as the I or reference frame and all other as P frames in one video using x264 codec.

    In this case, is it possible to have 2 videos, one only with an I frame and another frame only with 4 P frames ?

    To decode all 4 P frames, I require the first I frame video but can we construct the videos in this way ?

  • video overlay on another video with rounded corner, transparency, opacity, scaling, and border all together with FFMPEG in PHP

    8 février 2020, par Avan Shrivastava

    I am trying to change a video with Rotation, rounded corner, transparent, scaling, and border all with together and overlay on a video ; I am trying to do this with FFMPEG in PHP but getting issue in transparent background ; I am getting green background please help ;

    ffmpeg -i empt_vid_5891581054410.mp4 -i merged-571580302534.mp4 -filter_complex "[1:v] rotate=- 30*PI/180:ow=rotw(iw):oh=roth(ih):c=none [rotate] ;[0:v][rotate] overlay=40:10:enable=’between(t,2,7)’, colorchannelmixer=aa=0.5" -auto-alt-ref 0 -pix_fmt yuv420p -c:a copy overlayavatar.mp4

  • How to loop and combine video and audio streams of random length into one video file with ffmpeg ?

    8 janvier 2019, par Arkadiy Bolotov

    I have a video file (let’s say 5-10 seconds) and a audio file (5-300 seconds). I would like to loop and merge them into a resulting video of known length (let’s say 50-60 seconds). How would I do that in ffmpeg ?

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