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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (7516)

  • Best Web Video Encoding Practices for IOS (FFMpeg)

    21 juin 2012, par MagicMushroom

    I am working on an online video repository system for a client, written mostly in PHP. At the moment I am building a mobile version of our desktop website. Our desktop site allows users to watch videos in the browser, much like YouTube.

    My client uploads videos through the manager interface I have created, and my application uses FFmpeg on the server to transcode his videos into several resolutions and bitrates. I am no expert on FFmpeg, and while I do not know the ins and outs of each individual setting, I do understand how it works as a whole. Right now, we are using the mp4 container format with the h.264 codec to encode our videos. Our command looks like :

    ffmpeg -y -i "INPUT FILE.mov" -f mp4 -s 640x480 -vcodec libx264 -preset fast -maxrate 1500 -bitrate 1000 -bufsize 4096 -acodec libfaac -ab 192 -ac 2 "OUTPUT_FILE.mp4" >> "FILE.log" 2>&1 &

    I'm hoping to gain information about best practices with encoding video for web streaming on IOS and other mobile devices using FFmpeg. What resolutions and settings make for good mobile streaming video ? How can I ensure maximum compatibility across the sea of Android devices ?

  • gstreamer vaapih264enc generated ts segment dont play on AVPlayer

    21 juin 2022, par Guru Govindan

    I have a pipeline that transcodes an rtsp stream into hls segments. The manifest is playable in browsers(with hlsjs) and ffplay and VLC. However when I play the stream or individual ts segments in Quicktime player or my IOS App that uses avplayer, it doesnt work.

    


    This seems to be an issue only with vaapih264enc. When I try the same with software encode like x264enc it works fine.

    


    The following is a simple pipeline where this is reproducible.

    


    GST_DEBUG=3 gst-launch-1.0 rtspsrc location='rtsp://user:pass@10.10.10.12:554/' name=rtpsrc0 \
 rtpsrc0. ! rtph264depay ! queue ! decodebin ! vaapih264enc ! mpegtsmux name=mux ! filesink location=mymux.ts \
 rtpsrc0. ! decodebin ! queue ! fdkaacenc ! mux.


    


    when I run the following command to copy the encoded stream as is from the generated ts segment it works

    


    ffmpeg -i mymux.ts -c copy mymux_ffmpeg.ts


    


    Is the ffmpeg adding some additional header information that the quicktime player is happy with ?

    


    I appreciate any help with this.

    


  • Ffmpeg gdigrab records black window when capturing graphics-intensive flight simulator

    23 mars 2021, par iter

    I am trying to capture video from XPlane, a popular flight simulator. I'm running on Windows.

    



    Normally, I can capture individual windows using gdigrab, but when I use it on an XPlane window like so...

    



    ffmpeg -f gdigrab -framerate 30 -i "X-System" -b:v 300K capture.mp4


    



    ...I get a video file that's the right dimensions but is all black. I imagine this may have something to do with how XPlane talks directly to the GPU. I should add that if I capture the entire desktop like so...

    



    ffmpeg -f gdigrab -framerate 30 -i desktop -b:v 300K capture.mp4


    



    ...I get everything including the simulator window, but naturally with unrelated windows in the capture, including windows sitting on top of the simulator window.

    



    Is there a way for gdigrab to capture video this GPU-intensive window alone ? Is there a different tool I can use ?

    


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