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Autres articles (53)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (10450)

  • How can I efficient process a video on a per-request basis ?

    18 décembre 2015, par mipadi

    I’m working on a web application in which a watermark must be applied to a video before it is sent to the user. Currently this watermark is static, and is created using ffmpeg when a video is updated. However, the application is changing so that a unique watermark will be added to the video for every request made for the video. This prevents a problem, as the video files may be fairly large and adding a watermark may be time-consuming (e.g., in some cases it may take over a minute to add a watermark), but the watermarks cannot be added on upload.

    I figured that streaming video could be a solution and implemented a solution using the nginx-rtmp-module, but several problems cropped up :

    1. RTMP solutions are a no-go as they appear to require Flash. This application must be supported on devices that don’t support Flash at all, or don’t (and won’t) have it installed.
    2. I have considered using MPEG-DASH, but that enjoys only limited support. Namely, it is not supported on versions of Firefox targeted by the application, nor is it supported on iOS or some versions of Safari.
    3. I have considered HLS, but that enjoys even more limited support than MPEG-DASH.
    4. Regardless, I haven’t actually been able to get Dash.js (the reference player for MPEG-DASH streams) to work, although that may be due to an encoding issue, I’m not sure.

    I wondered if there is a better (perhaps simpler) solution to this problem ; perhaps streaming video isn’t the way to go at all ? Is there an efficient way to transcode a video file on-the-fly and start sending it to the browser quickly ?

    I am not against using solutions like node.js or other platforms/frameworks, and solutions can use HTML5 <video></video> if necessary.

  • Output a video to a file

    3 novembre 2011, par EagleEye

    I am working on a very CPU intensive legacy application on windows which captures video frames from camera and displays it on the screen. Now I need to add a feature to it to save this video feed to an output file. And I have a raw image data as an input. I need to make this process as efficient as possible so that it doesn't affect the performance of my application.

    So what are the best available API's in C++ that I can use to create an output video file. And moreover what should be the most efficient encoding format that I must use so that I get the maximum throughput. Also I may have to use some compression techniques. So what should be the best approach.

    Moreover can I use GPU acceleration for this process and how ?

    Uptil now I have encountered following tools that I may use :

    1. OpenCV
    2. Microsoft Media Foundation LIbrary or DirectShow
    3. ffmpeg

  • Use of library with GPL license on Android - ffmpeg

    7 septembre 2016, par Carlos

    I am using some libraries in my android application and all of these are with Apache 2.0 license.
    Only one has GPLv3 license :
    https://github.com/WritingMinds/ffmpeg-android-java

    So, if I use this library I must share my application complete code online ? can I solve my problem differently ?

    Thanks

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