Recherche avancée

Médias (1)

Mot : - Tags -/swfupload

Autres articles (91)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • 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 (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (10357)

  • Any way to speed up this side by side video merging FFMPEG command ?

    25 mai 2022, par John

    I am taking two mp4 videos and putting them side by side with a slight zoom so it looks better. Right now the best I get is speed at 7x which will still take a long time for an hour-long MP4 video (not to mention the size with ultrafast). Is there anything else I can do ? I thought maybe scaling and cropping first, then combining with copying video and audio but that doesn't appear to be faster.

    


    ffmpeg -y -i input1.mp4 -i input2.mp4 -filter_complex "[0]scale=-2:720,crop=640:720[v0];[1]scale=-2:720,crop=640:720[v1];[v0][v1]hstack;[0:a][1:a]amerge[a]"  -strict experimental -map 0:v -map '[a]' -ac 1 -preset ultrafast -vsync 0 output.mp4


    


  • FFmpeg change video speed with -r vs -filter and setpts

    6 mai 2022, par simplesystems

    If I want to change the video speed with ffmpeg,

    


    what exactly is the difference changing the fps :

    


    ffmpeg -y -r 10 -i video.mp4 video_new_fps.mp4

    


    or using filter and setpts :

    


    ffmpeg -i video.mp4 -filter:v "setpts=PTS*3" -an video_new_fps.mp4

    


    It seems that with both options I can speed up or slow down the video.

    


    So which one should be used in which case ?

    


  • Storing high quality video stream (from IP Action Camera) continuously to a Storage Device and issues around Write-Speed bottlenecks

    21 mai 2017, par Aldo

    I am looking to get an Action Camera (Eken H8R, or a GoPro) for a project. Let me explain the scenario I have :

    I will obtain a live stream from the camera on to a Raspberry Pi (over WiFi) as shown here. Next, I want to continuously segment this live stream into 10-15 minute video clips and store them in an external Hard Drive (which is connected to the RPi). I am considering this thread, and the avconvcommand mentioned in the answer by Alexander.

    Now, my concern is write-speed limitations. The video stream would probably have a high bitrate, and might be 4k30fps, in which case file sizes would be huge. Would write speed to disk be a bottleneck ? If so, how will the Pi maintain a buffer to achieve this ? Could I run out of space as the memory stick on the Pi would only be around 8 gigs ? If so, what’s a better alternative ? Please correct me if I’m wrong on these as I’m only a beginner.

Navigation