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  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

  • 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" (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

Sur d’autres sites (11789)

  • ffmpeg how to put color overlay over video

    17 novembre 2015, par flieks

    I want to put a color overlay (blue, red or green or hex value) over a video giving it a Instagram filter like effect.

    I think it should be in the lines of :

    ffmpeg -i video.mp4 -i "red.png" -filter_complex "blend=all_mode='screen':all_opacity=0.7" output.mp4

    or maybe with all_mode=overlay

    But I get an error :

    First input link top parameters (SAR 0:1) do not match the corresponding second input link bottom parameters (SAR 1:1).

    I also tried with lutrgb=r=1.5, but that didn’t give it a red color (it takes the red away).

    What am i doing wrong ?

  • YUV To MP4 Conversion is causing loss of data

    7 août 2015, par Muhammad Umar

    i have a record YUV video with link

    https://www.dropbox.com/s/pio1wxk09adtr09/0.v?dl=0

    I can easily convert it to mp4 using following code

    ffmpeg -f s16le -ar 44100 -ac 1 -i "0.a" -f rawvideo -pix_fmt yuv420p -s 480x480 -r 30 -i "0.v" -vcodec libx264 -profile:v baseline -preset ultrafast -qp 0 -b:v 1024k -g 30 -acodec libfdk_aac -ar 44100 -ac 1 -b:a 64k -f mp4 -movflags faststart "1438947231095.mp4"

    However the quality is quite low. When i try to run this YUV Video on YUV players they show green pixalated image totally un readable. How can i know if the YUV is really blurry or my ffmpeg conversion is causing it to loss information

  • Pixel format for Android 5.0 devices

    3 mars 2015, par user1917864

    I am trying to fetch screenshots of android devices using adb screencap command along with the ffmpeg command.
    The command works well for devices other than Android 5.0.

    Command :
    ffmpeg -loglevel panic -f rawvideo -pix_fmt bgr0 -r 10 -i - -vf scale=1 -f image2 -vcodec png -vframes 1 /sdcard/screen.png

    The issue is for Android 5.0 devices after every rendering of image a green image comes, so I figured this might be because of mismatch of pixel format(pix_fomrat).
    I have tried using all the rgb, bgr and rgba formats but invain.
    Can anyone help out figuring what could be the problem using this ffmpeg command with Android 5.0 devices.

    Thanks in advance

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