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Autres articles (86)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

Sur d’autres sites (8962)

  • Overlay transparent video over an image with FFMPEG

    17 janvier 2021, par Dilip Suvagiya

    I have a transparent video, now I want to add an image in the transparent part of the video.
The below command helps to overlay image in video but it covers full part of the video and few portions of video become invisible. Anyone, please suggest a way to fix this ? Many thank in advance.

    


    ffmpeg -i input.avi -i image.jpg -filter_complex "[0:v][1:v] overlay=204:773:enable='between(t,0,5)'" output.avi

    


    Transparent video

    


    Output video with image overlaps some part of the video as highlighted

    


  • Revision e18edd5eb6 : Allow mode search breakout at very low prediction errors In model_rd_for_sb fun

    3 octobre 2014, par Yunqing Wang

    Changed Paths :
     Modify /vp9/encoder/vp9_firstpass.c


     Modify /vp9/encoder/vp9_firstpass.h


     Modify /vp9/encoder/vp9_rdopt.c


     Modify /vp9/encoder/vp9_speed_features.c



    Allow mode search breakout at very low prediction errors

    In model_rd_for_sb function, the spatial domain SSE and variance
    are checked to see if transform coefficients are quantized to 0.
    Besides that, this patch adds another set of thresholds that are
    much more strict. These thresholds are used to conduct a partition
    block level check to measure if all its TX blocks are skippable
    for YUV planes. If it is true, x->skip is set for this partition
    block, and thus its mode search is terminated.

    This speeds up the encoding at very low prediction error case,
    such as screen sharing application. This patch covers what
    rd_encode_breakout_test() does, so that function is removed.

    Borg test at speed 3 shows :
    For stdhd set, psnr : +0.008%, ssim : +0.014% ;
    For derf set, psnr : +0.018%, ssim : +0.025%.
    No noticeable speed change.

    Change-Id : I4e5f15cf10016a282a68e35175ff854b28195944

  • ffmpeg crashes when extracting PNG's from video

    7 février 2018, par Sam Bogoff

    I am attempting to extract PNG’s from a video (.avi) using ffmpeg. My code is :

        ffmpeg -i vidx.avi -f image2 imgx_%d.png

    Normally that would work fine, but just now it has been causing ffmpeg to crash, a box appears telling me ’ffmpeg.exe has stopped working .. etc...’, however changing from png’s to jpeg’s and the problem goes away.

    The format of the video doesn’t seem to matter, an mp4 and mpg also have the same issue as the avi.

    This has only just happened (in the past day) on a Windows 10(x64)PC so, could it be related to a MS/Windows Update.. is that possible ? Does anyone know what else could cause this ?

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