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Médias (91)

Autres articles (81)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • 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 (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (11536)

  • FFmpeg Overlay Filter Changes Source FPS

    24 juin 2021, par user4134414

    I want to overlay a video on top of another slow-motion video.
Surprisingly, the overlay becomes also slow-motion.

    


    I'm applying the following command :

    


    ffmpeg
  -to 00:00:01.000 -i camera1.mp4                       // original video
  -ss 00:00:02.000 -to 00:00:09.000 -i confeti.mov      // overlay video
  -filter_complex '[0]setpts=3.333*PTS[s0]; [s0][1]overlay'  // change FPS of original video and overlay
  -r 24 out.mp4


    


    The output can be seen here : out.mp4

    


    As you can see, the "confetti" overlay is slow while the original video is playing and go back to normal speed once the original video ends.

    


    Any idea why it happens and how can it be fixed ?

    


  • what filters affect ffmpeg encoding speed

    16 janvier 2021, par ohroblot

    What are the options in this command that would cause my encoding speed to be 0.999x instead of 1.0x or higher ?

    


    ffmpeg -y \
-loop 1 -framerate 30 -re \
-i ./1280x720.jpg \
-stream_loop -1 -re \
-i ./audio.mp3 \
-vcodec libx264 -pix_fmt yuv420p \
-b:v 2500k -maxrate 2500k -bufsize 10000k \
-preset slow -tune stillimage \
-b:a 128k -ar 44100 -ac 2 -acodec aac \
-af "dynaudnorm=f=150:g=15" \
-g 60 \
-f flv tmp.flv


    


    I am trying to figure out why would this only be encoding at 0.999x speed, is there anything that I could do to speed this up ? 2 pass encoding ? I cannot understand why the encoding speed is so slow ?

    


    Also please not i've tried present from slow - ultrafast, the encoding speed stays relatively unchanged.

    


  • Using FFMPEG to automatically set a single max filesize across multiple different sized files

    14 juin 2020, par DuffCreeper

    I don't really know how to word it any better but I'm trying to convert WEBM/GIF to MP4 with no sound

    



    The problem I'm facing is retaining the quality without having to sacrifice it across multiple files by having to resize them to 420p

    



    The idea was to hopefully somehow get FFMPEG to automatically determine the bitrate required for the file to hit the filesize of 10mb. Though I have looked everywhere online and I have not found a single answer regarding it, so either it's not possible or I'm blind

    


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