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Médias (91)

Autres articles (42)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • 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 (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (5575)

  • How to loop input specify of time using FFMPEG ?

    27 novembre 2018, par Young King

    My command

    -f image2 -i background.png -i img_%d.png -filter_complex [0:v][1:v]overlay video.mp4

    And i want to video.mp4 output loop x time . How can i do that ? Thanks

  • Not getting accurate time stamp from FFMPEG after converting datetime to Unix

    13 janvier 2023, par Jacob

    I am creating a video editing application. I have created an ObservableCollection which contains information regarding every frame, 30 per second. I have computed the DateTime per frame as VideoCreationDate + FrameNumber / 29.97. When I display the current time and date with a TextBlock overlaying each frame, the time is perfectly accurate. However, once I convert the date time to Unix time and use it as parameters in the FFMPEG DrawText filter, the time is slightly off. The first few frames are accurate and progressively get worse off the more I scrub through the frames. I am checking the Unix timestamp on each frame and it is correct but for some reason, when I render the FFMPEG command, it converts the timestamp to date time inaccurately.

    


    Below is the method to convert DateTime to Unix :

    


    public long ToUnixTimestamp(DateTime value)
    {
        var dateTimeOffset = new DateTimeOffset(value);
        var unixDateTime = dateTimeOffset.ToUnixTimeSeconds();
        Debug.WriteLine(unixDateTime);
        return unixDateTime;
    }


    


    Below is part of the FFMPEG string containing the DrawText filter :

    


    drawtext=text=\'%{pts\:localtime\:" + ToUnixTimestamp(CurrentFrame.FrameTime) + @"\:'%#I\:%M%p'}\'


    


    I am not sure if I am doing something wrong or if this is a flaw with FFMPEG. Any ideas ?

    


  • Using ffmpeg, extract small part of .m4a audio file specifying exact start and end time

    31 août 2015, par Kes

    I have Linux mint 17.1.

    When I use ffmpeg to cut out a section of a 4 hour long .m4a audio file as follows :

    ffmpeg -ss 0:10:00 -i in_file.m4a -vn -c copy -t 0:40:00 out_file.m4a

    the correct position and duration of extract is extracted and the file plays just fine.

    How can I extract using the end time of the extract, not the duration ?
    ie in this case the start time and end time are 0:10:00 and 0:00:50.

    Thank you

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