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Autres articles (38)

  • Initialisation de MediaSPIP (préconfiguration)

    20 février 2010, par

    Lors de l’installation de MediaSPIP, celui-ci est préconfiguré pour les usages les plus fréquents.
    Cette préconfiguration est réalisée par un plugin activé par défaut et non désactivable appelé MediaSPIP Init.
    Ce plugin sert à préconfigurer de manière correcte chaque instance de MediaSPIP. Il doit donc être placé dans le dossier plugins-dist/ du site ou de la ferme pour être installé par défaut avant de pouvoir utiliser le site.
    Dans un premier temps il active ou désactive des options de SPIP qui ne le (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (8098)

  • AVC-Intra support

    20 juillet 2013, par Kieran Kunhya
    AVC-Intra support

    This format has been reverse engineered and x264’s output has almost exactly
    
the same bitstream as Panasonic cameras and encoders produce. It therefore does
    
not comply with SMPTE RP2027 since Panasonic themselves do not comply with
    
their own specification. It has been tested in Avid, Premiere, Edius and
    
Quantel.
    

    Parts of this patch were written by Jason Garrett-Glaser and some reverse
    
engineering was done by Joseph Artsimovich.
    • [DH] common/common.c
    • [DH] common/common.h
    • [DH] common/set.h
    • [DH] encoder/analyse.c
    • [DH] encoder/encoder.c
    • [DH] encoder/ratecontrol.c
    • [DH] encoder/set.c
    • [DH] encoder/set.h
    • [DH] x264.c
    • [DH] x264.h

  • How can I mux H.264 RTP output into a container using FFMPEG ?

    23 septembre 2013, par Grad

    I am working on the effects of network losses in video transmission. In order to simulate the network losses I use a simple program which drops random RTP packets from the output of H.264 RTP encoding.

    I use Joint Model (JM) 14.2 in order to encode the video. However, I don't use AnnexB format as my output, instead I choose the output as RTP packets. The JM output is generated as RTP packets with RTP headers and payload as a sequence. After that, some of RTP packets are dropped by using a simple program. Then, I decode the output by using also JM and it's error concealment methods. That gives me a YUV file as output. The format of the output is as follows :

         ----------------------------------------------------------------------
    
     | RTP Header #1 | RTP Payload #1 | RTP Header #2 | RTP Payload #2 |...
    
     ----------------------------------------------------------------------

    I want to make a subjective test with these bitstreams and it's very inconvenient to crowdsource this subjective test with GBs of video data. So, I want to mux these bitstreams into a container (i.e. AVI) by using FFMPEG. I have tried to decode these bitstreams with FFMPEG and FFPLAY ; however, both of them didn't work. I also tried the following command and it didn't work, either.

        ffmpeg - f h264 -i  -vcodec copy -r 25 out.avi

    Which format or muxer should I use ? Do I need to convert these files to any other format ?

  • FFMEG : run code after complete conversion

    26 octobre 2019, par Сергей Барахтенко

    There is a code that runs FFMPEG

    shell_exec($this->config->item('ffmpeg') . ' -i ' . $path . ' ' . $cmd . ' 1>' . $folder . '/log.txt 2>&1 ');

    And there is the following line, which should, taking into account the peculiarities of the PHP language, work out immediately after shell_exec

    $params = array(
    
    'status' => 'ready'
    
);
    
$result = $this->model->editVideo($video_key, $params);

    This line simply updates the status of the video in the database

    My question is, why doesn’t the further php code work after completion shell_exec ? What could be the catch ?

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