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  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
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Sur d’autres sites (8221)

  • speed up Watermarking process in FFmpeg

    24 octobre 2017, par 1234567

    speed up Watermarking process in FFmpeg

    Is there any way to speed up water marking process in Ffmpeg

    I have a video 5 seconds long and want to add watermark over it

    the command used is

    "-y","-i", j, "-i", image1, "-filter_complex",
    
                "overlay=0:0","-codec:a", "copy","-preset","ultrafast", out

    even after using ultrafast and using same code not re-encode the audio it is very slow, any help would be useful

  • FFmpeg accurate speed for x11grab

    21 mars 2017, par Peter Shaw

    Hi I am trying to make a screencast in realtime with ffmpeg on Linux.

    This is my call :

    ffmpeg \
    
-f x11grab \
    
-s 1920x1080 \
    
-r 24 -framerate 24 \
    
-i $DISPLAY \
    
-preset ultrafast \
    
-tune zerolatency \
    
-pix_fmt yuv420p \
    
-acodec copy \
    
-vcodec libx264 \
    
-b:v 500k \
    
-crf 0 \
    
-threads 0 \
    
-y /data/production/out.mkv \
    
-an \
    
-t $LEN

    As far as i can tell this is near accurate and has a decent quality. Maybe there is a better settling, than let me please know.

    As the screen will be captured the timing is not correct. I get a message with something like this :

    frame=  901 fps= 22 q=0.0 size=   66553kB time=00:00:37.50 bitrate=14538.3kbits/s speed=0.905x  

    The Speed will turn around from 0.600x to 1.200x and is never stable to 1x.
    I wonder if it’s possible to get a accurate timing.
    I have to do a 60sec movie that is in speed exactly 100% like the frame-buffer is. Is it possible ?

  • Revision fb2a89b1fb : Fixes for key frame coding at speed 5. Keep the same transform cutoff and parti

    23 juin 2015, par Marco

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c



    Fixes for key frame coding at speed 5.

    Keep the same transform cutoff and partition selection
    for speed 5 as in speeds >=6 (non-rd speed settings).

    Existing setting for key frame at speed 5 allowed transform size
    up to 32x32 on key frames, and did not allow for 4x4 block partition size.
    This created more visual artifacts on first few frames.

    avgPSNR/overallPSNR/SSIM gains of 0.2/0.7/0.8 for rtc_derf(low-res) set,
    and 0/0.7/1.1 gains for rtc set.

    Change-Id : I8c139ec6c9bb74e14b4ffbad5f12e94f18a59c0b

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