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Autres articles (104)

  • 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 (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (6996)

  • How to stop ffmpeg when get a long black screen

    4 juin 2018, par sonseiya

    i want to know if there is a way to stop ffmpeg command when a black frame in an interval of time is detected.

    I mean, if the video i am getting is a black screen and it is of 3 seconds of duration, for example, i would like ffmpeg stops.

    Regards

  • how can i stop ffmpeg when no new frame come to /dev/video0

    17 mai 2022, par itirou tarou

    I am now modifying stream from camera with our program(programA) and output as .ts files like below.

    


    camera => programA => /dev/video0 => ffmpeg => .ts files

    


    When camera stopped, programA stop automatically and no new frame arrive to /dev/video0.
I want ffmpeg stop automatically in such situation.
What ffmpeg option should I use ?
Currently I'm using option below, but ffmpeg doesn't stop.

    


    ffmpeg -f video4linux2 -i /dev/video0 -vsync vfr -f hls -c:v h264_nvenc out.m3u8


    


    Edited :
    
I tried to invalidate /dev/video0 but it failed like below.

    


    # modprobe -r v4l2loopback
modprobe: FATAL: Module v4l2loopback is in use.


    


    After I stopped programA and ffmpeg, the command success.
    
ProgramA is kicked by systemd service and restart automatically when it stopped.
    
ffmpeg is kicked by programB, but programB doesn't control programA.
    
But it sounds like good idea to inform B so B can kill ffmpeg.
    
I'll try that way. Thank you.

    


  • h264dec : use a large enough field for reference list modification values

    17 août 2017, par Anton Khirnov
    h264dec : use a large enough field for reference list modification values

    pic_num can be at most 17-bit, so uint8_t is not sufficient.
    

    Found-By : Bradley Sepos <bradley@bradleysepos.com>
    
CC : libav-stable@libav.org
    • [DBH] libavcodec/h264dec.h

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