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Autres articles (38)

  • 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

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • 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.
    You may also (...)

Sur d’autres sites (4422)

  • avcodec/videotoolboxenc : Add AYUV as a candidate pix_fmt for HEVC alpha

    11 mars, par Zhao Zhili
    avcodec/videotoolboxenc : Add AYUV as a candidate pix_fmt for HEVC alpha

    Signed-off-by : Zhao Zhili <zhilizhao@tencent.com>
    • [DH] libavcodec/videotoolboxenc.c

  • Overlay video with alpha using FFmpeg on macOS Catalina... problems

    16 octobre 2019, par jogga

    In previous versions of macOS (10.14 Mojave and older) I used FFmpeg to overlay a video with alpha on top of another video with much success. Now when updated to macOS Catalina the same FFmpeg commands suddenly doesn’t work. It just produces black where the transparency should have been according to the alpha channel. The video I overlay on top is a ProRes 4444 file (which includes an alpha channel) and it no longer works as expected.

    I have tried several versions of FFmpeg from the nightly builds to the latest stable one (version 4.2.1) to no avail. Nothing works :-(

    The simplest form of the command I have been using looks like this :

    ffmpeg -y -i skiing.mp4 -i subtitles.ap4h -filter_complex overlay subtitled.m4v

    Doesn’t work. But if I replace the subtitles.ap4h file with a simple .png image with alpha, it works ?

    I have also been experimenting with the blend filter, but I really don’t understand the gist of it yet.

    Can someone please shed some light on this. Have anyone else out there seen this problem.

    Do you have any suggestions on how to use the blend filter instead of the overlay filter to accomplish the same task ?

    You can find the sample files I used in my dropbox...

    https://www.dropbox.com/s/8z3grpsbejb1na0/skiing.mp4?dl=0
    https://www.dropbox.com/s/8c79lg07rbuqyhn/subtitles.ap4h?dl=0

    Really looking forward to someone help me solve this mystery.

    Best regards / Jörgen

  • avcodec/xsubdec : fix overflow in alpha handling

    23 octobre 2019, par Michael Niedermayer
    avcodec/xsubdec : fix overflow in alpha handling

    Fixes : left shift of 255 by 24 places cannot be represented in type 'int'
    
Fixes : 18368/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XSUB_fuzzer-5702665442426880
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/xsubdec.c

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