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Autres articles (46)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
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  • 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.
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Sur d’autres sites (5335)

  • Revision 5ab920d2ae : Using local variable for token_cache. The difference with the old code is that

    3 décembre 2013, par Dmitry Kovalev

    Changed Paths :
     Modify /vp9/decoder/vp9_decodeframe.c


     Modify /vp9/decoder/vp9_detokenize.c


     Modify /vp9/decoder/vp9_detokenize.h


     Modify /vp9/decoder/vp9_onyxd_int.h



    Using local variable for token_cache.

    The difference with the old code is that originally the whole token_cache
    was initialized with zeros at the beginning of decode_coefs() function.
    Now we set several zero values explicitly with "token_cache[scan[c]] = 0".

    Change-Id : I88cc5031f01d13012d1a4491739c36cb44f9401e

  • ffmpeg : move a local variable definition later.

    6 mai 2013, par Nicolas George
    ffmpeg : move a local variable definition later.

    Fix a segfault when using the -map option without input files.
    • [DH] ffmpeg_opt.c

  • android - ffmpeg - making crossfade between 5 videos

    24 juin 2016, par LuongTruong

    I want to make a small slideshow app which is able to do some effect like fade in, fade out, and crossfade between multiple videos by using ffmpeg4android.

    After a few hours researching, I am still getting stuck in doing crossfade. Following this suggestion, I am able to create a crossfade but it is not work perfectly.

    The problem is that I want to combine 5 videos with crossfade effect between them and the duration of each video is 5 seconds. As a result, the output file is only 5 seconds instead of 25 seconds and there is a crossfade effect in the end of output file.

    Here is my command :

    String commandStr = "ffmpeg " +
    
                "-y " +
    
                "-i /sdcard/videokit/big_buck.mp4 " +
    
                "-i /sdcard/videokit/big_buck.mp4 " +
    
                "-i /sdcard/videokit/big_buck.mp4 " +
    
                "-i /sdcard/videokit/big_buck.mp4 " +
    
                "-i /sdcard/videokit/big_buck.mp4 " +
    
                "-filter_complex " +
    
                "[0:v]setpts=PTS-STARTPTS[v1];" +
    
                "[1:v]format=yuva420p,fade=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+(4/TB)[v2];" +
    
                "[2:v]format=yuva420p,fade=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+(8/TB)[v3];" +
    
                "[3:v]format=yuva420p,fade=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+(12/TB)[v4];" +
    
                "[4:v]format=yuva420p,fade=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+(16/TB)[v5];" +
    
                "[v1][v2]overlay[v12];[v12][v3]overlay[v123];[v123][v4]overlay[v1234];[v1234][v5]overlay,format=yuv420p[v] " +
    
                "-map [v] " +
    
                "/sdcard/videokit/result.mp4";

    UPDATE 1 : ADD LOG

    Please download the log file here

    Please let me know if I did something wrong in my command. Any help would be appreciated.

    Thank you in advance !

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