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Autres articles (37)

  • 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

  • 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 (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

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  • FFMPEG image to video with kenburns effect

    11 novembre 2019, par Buu

    I am new to FFMPEG and I kinda confused with their commands and options. So I googled some existing commands and found this :

    ffmpeg -y -loop 1 -i bgimage.png -ss 0 -t 5 -r 1 -loop 1 -i front.png -ss 0 -t 5 -filter_complex " [1:v] scale=w=1920:h=1080 [fg]; [0:v] scale=w=-2:h=3*1080 , crop=w=3*1920/1.2:h=3*1080/1.2:y=t*(in_h-out_h)/5, scale=w=1920:h=1080, setsar =1 [bg] ; [bg][fg]overlay=shortest=1[v] " -map "[v]" -c:v h264 -crf 18 -preset v eryfast pan_up.mp4

    The only problem is effects becomes sluggish.

    I am trying to convert image to video with kenburns effects. Can you guys help me out ? Calling ffmpeg masters here in SO. Your help will be greatly appreciated. Thank you so much !

    Here’s the sample video I want to achieved, https://trello-attachments.s3.amazonaws.com/545a93cff0b222f456c5ad82/5d8cfc0d75e80e63dae2fe6a/5a523ed328f24b0454c5c56cd0ee68e6/23442279.mp4

  • Revision 4f2f86725b : Use the chessboard pattern pred search in newmv mode This commit extends the ch

    23 juillet 2014, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_rdopt.c



    Use the chessboard pattern pred search in newmv mode

    This commit extends the chessboard pattern prediction filter search.
    If the above and left blocks have the same prediction filter type,
    the encoder will skip the prediction filter type search and use the
    reference one.

    The overall chessboard pattern prediction filter type search reduces
    speed 3 runtime for hard clips. Experiments on park joy at 1080p
    and 15000 kbps show that the runtime goes from 723265 ms to 65832 ms,
    i.e., about 10% speed-up. Compression performance wise, it affects
    the coding quality by

    Change-Id : I880975497c7ad166532e9eea9bf46684d77ff327
    derf : -0.326%
    yt : -0.257%
    hd : -0.241%
    stdhd : -0.417%

  • avformat/rtpdec_rfc4175 : fix interlace format

    3 février 2022, par Patrick Keroulas
    avformat/rtpdec_rfc4175 : fix interlace format

    In previous state, a new frame was allocated on each timestamp step,
    
i.e. each frame/field transition. However, for interlace, a new frame
    
should be allocated on 1st field, completed with the 2nd and finally
    
freed.
    

    This commit fixes the frame allocation and the detection of missing RTP
    
markers.
    

    Signed-off-by : Patrick Keroulas <patrick.keroulas@radio-canada.ca>
    
Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
    • [DH] libavformat/rtpdec_rfc4175.c

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