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  • 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 (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

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  • ffmpeg usb Web cam recording terminates randomly before set duration

    16 mars 2018, par pomptondrive

    The output of this script is just fine ; it’s pretty much what I want. But it seems to terminate randomly. My next step will be to try this on another computer to see if the issue persists.

    My configuration :
    Dell Precision laptop, m4400
    2x Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz
    Linux Mint 18.3 Sylvia
    Kernel : Linux 4.4.0-116-generic (x86_64)
    Card : NVIDIA G96GLM [Quadro FX 770M]
    ffmpeg version 2.8.11-0ubuntu0.16.04.1
    USB Camera-B4.09.24.1 Sony Playstation Eye

    And this is the script that I’m running - the last time it recorded for about three hours and forty-five minutes, before that it was about 55 minutes ; once it ran five and a half hours :

    #!/bin/bash  
    
echo "This is a shell script to make a timelapse video."  
    
ffmpeg \
    
-f v4l2 -input_format yuyv422 -video_size 640x480 -framerate 5 -t 09:00:00 -i /dev/video0 \
    
-vf "select=not(mod(n\,5)),setpts=N/(60*TB),fps=60, drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf:text='%{localtime\:%T}':x=20:y=20:fontcolor=white" \
    
-c:v libx264 -preset superfast -crf 23 -pix_fmt yuv422p -g 15 -keyint_min 15 \
    
-f mpegts /media/dkm/OneTB/Video/Timelapse_$(date +%Y-%m-%d_%H.%M.%S).ts

    Any suggestions would be appreciated. Thanks !

  • FFmpeg - divide single .webm video into multiple videos (each representing part of the screen) specifying rows and columns count

    23 mai 2022, par salveiro

    Can FFmpeg divide one big rectangular video into x smaller rectangular ones ?
What would be a command for it ?

    


    Can we parametrize the command with number of rows and columns we desire ?

    


    Can we somehow prevent loosing pixel precision when command is provided with improper rows/column count for source video resolution ?

    


  • How do I accurately extend the duration of a tiny video clip ?

    18 avril 2018, par joeycato

    I noticed that ffmpeg doesn’t always scale the duration of a clip to the desired value ( even accounting for milliseconds of precision loss.) For example, whenever I attempt to scale the duration of this tiny 67ms clip to 7 seconds :

    ffmpeg -i input.avi -filter:v "setpts=(7/0.067)*PTS" -an output.avi    

    the resulting video is only 3.5 seconds in duration.

    Not really sure why this is off by multiple seconds, but I suspect it has something to do with the input clip itself ( which is only 2 frames @ 29.97 fps ) So far, I’ve discovered that if I scale the duration to a much larger value first, then scale back from that to 7 seconds, it works fine :

    ffmpeg -i input.avi -filter:v "setpts=(1000)*PTS" -an input_scaled_high.avi
    
ffmpeg -i input_scaled_high.avi -filter:v "setpts=(7/33.400033)*PTS" -an output.avi

    But I’m hoping I don’t need to resort to an intermediate file. Is it possible to solve this with a single ffmpeg call ?

    If it helps, here is the video file I’m working with : https://drive.google.com/drive/folders/1hI5Xo6kfAfMd8ZylM6XrPX5fuO88gncE?usp=sharing

    Note : I should mention that I don’t need sound at all in this experiment ( hence the -an )

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