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  • Encodage et transformation en formats lisibles sur Internet

    10 avril 2011

    MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
    Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
    Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...)

  • 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 (...)

  • 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 (6311)

  • Merge commit ’6ee1cb5740e7490151db7dcec7e20ceaf8a2fe1f’

    25 août 2014, par Michael Niedermayer
    Merge commit ’6ee1cb5740e7490151db7dcec7e20ceaf8a2fe1f’

    * commit ’6ee1cb5740e7490151db7dcec7e20ceaf8a2fe1f’ :
    
  libavformat : use MSG_NOSIGNAL when applicable
    

    Merged-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavformat/network.h
    • [DH] libavformat/sctp.c
    • [DH] libavformat/tcp.c
    • [DH] libavformat/unix.c

  • Live Video Encoding and Streaming on a Webpage

    15 juin 2018, par Ockhius

    I am trying to show live webcam video stream on webpage and I have a working draft. However, I am not satisfied with the performance and looking for a better way to do the job.

    I have a webcam connected to Raspberry PI and a web server which is a simple python-Flask server. Webcam images are captured by using OpenCV and formatted as JPEG. Later, those JPEGs are sent to one of the server’s UDP ports. What I did up to this point is something like a homemade MJPEG(motion-jpeg) streaming.

    At the server-side I have a simple python script that continuously reads UDP port and put JPEG image in the HTML5 canvas. That is fast enough to create a perception of a live stream.

    Problems :

    • This compress the video very little. Actually it does not compress the video. It only decreases the size of a frame by formatting as JPEG.

    • FPS is low and also quality of the stream is not that good.

    • It is not a major point for now but UDP is not a secure way to stream video.

    • Server is busy with image picking from UDP. Needs threaded server design.

    Alternatives :

    • I have used FFMPEG before to convert video formats and also stream pre-recorded video. I guess, it is possible to encode(let say H.264) and stream WebCam live video using ffmpeg or avconv. (Encoding)

    Is this applicable on Raspberry PI ?

    • VLC is able to play live videos streamed on network. (Stream)

    Is there any Media Player to embed on HTML/Javascript to handle
    network stream like the VLC does ?

    • I have read about HLS (HTTP Live Stream) and MPEG-DASH.

    Does these apply for this case ? If it does,how should I use them ?

    Is there any other way to show live stream on webpage ?

    • RTSP is a secure protocol.

    What is the best practice for transport layer protocol in video
    streaming ?

  • Live Video Encoding and Streaming on a Webpage

    9 mars 2016, par Ockhius

    I am trying to show live webcam video stream on webpage and I have a working draft. However, I am not satisfied with the performance and looking for a better way to do the job.

    I have a webcam connected to Raspberry PI and a web server which is a simple python-Flask server. Webcam images are captured by using OpenCV and formatted as JPEG. Later, those JPEGs are sent to one of the server’s UDP ports. What I did up to this point is something like a homemade MJPEG(motion-jpeg) streaming.

    At the server-side I have a simple python script that continuously reads UDP port and put JPEG image in the HTML5 canvas. That is fast enough to create a perception of a live stream.

    Problems :

    • This compress the video very little. Actually it does not compress the video. It only decreases the size of a frame by formatting as JPEG.

    • FPS is low and also quality of the stream is not that good.

    • It is not a major point for now but UDP is not a secure way to stream video.

    • Server is busy with image picking from UDP. Needs threaded server design.

    Alternatives :

    • I have used FFMPEG before to convert video formats and also stream pre-recorded video. I guess, it is possible to encode(let say H.264) and stream WebCam live video using ffmpeg or avconv. (Encoding)

    Is this applicable on Raspberry PI ?

    • VLC is able to play live videos streamed on network. (Stream)

    Is there any Media Player to embed on HTML/Javascript to handle
    network stream like the VLC does ?

    • I have read about HLS (HTTP Live Stream) and MPEG-DASH.

    Does these apply for this case ? If it does,how should I use them ?

    Is there any other way to show live stream on webpage ?

    • RTSP is a secure protocol.

    What is the best practice for transport layer protocol in video
    streaming ?

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