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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

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  • convert 16bit grayscale raw video by ffmpeg for analysis in openCV

    15 février 2015, par user3730845

    I have 16bit grayscale stream of scientific data which I want to analyse in openCV. I tried to look for some conversion of data, however it seems that grayscale is a trouble for ffmpeg and available codecs.

    My idea is to use 3 colours of video wisely and stream my grayscales into 3 colours, one by one and then in openCV access each colour and do my analysis there. Is such a thing possible ?

    When I convert stream by : ffmpeg -f rawvideo -y -s 256x256 -pix_fmt gray16be -i rawfile.bin -an -vcodec ffv1 video.avi, I get weird colour space but I can open the result in openCV.

    If there is any other way to do such a thing can you point me towards libraries/howtos, ultimately I need to do thresholding, cross-correlation, edge filtering, centre of gravity types of functions and I need to do this as quickly as possible for datasets of >10GB

    My raw files/streams are set of 256x256 16bit b&w images, with 256 bytes header and gaps

  • FFmpeg stange interrupt in RTP broadcast

    17 octobre 2018, par Dr.eel

    I’m streaming a video stream from /dev/video0 device with ffmpeg.
    But after 5 minutes the stram on the receiveng side (ffplay) stops and the picture freezes.

    If I try to read stdout of ffmpeg with cat /procs/3535 (where 3535 is ffmpeg PID) it continues to work and the client sees the live video again !
    After next 5 minutes of work this situation repeats. And call to read stdout helps again.

    When I stream an audio stream the same way it doesn’t happen.

    OS Linux Ubuntu 14.04 32-bit. FFmpeg v3.4 built with GCC 4.8

    Any suggestions why it can be ?

  • FFmpeg-generated .m2v file shows strange video length

    15 août 2016, par John Doe 2

    I created a .m2v file using ffmpeg like this :

    ffmpeg -framerate 1/300 -s 720x576 -i img%3d.jpg -c:v mpeg2video -b:v 2000k -r 5 video.m2v

    This worked successfully, but if I right click on the .m2v file and go to details and scroll to video length I get this information which is really strange ( Using Windows 10) :

    Video
    

    
Length: 256204778:48:05

    If I run the .m2v file with a program like PowerDVD the length of the video is 5 minutes long.

    Why does this happen ?

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