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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

  • 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 (3983)

  • Error while trying to stream higer resolution using ffmpeg and jsmpeg

    11 avril 2017, par trojek

    I try to do a prof of concept of streaming webcam in browser using jsmpeg. It works perfect when I use code from the documentation which is as follows :

    ffmpeg \
    
    -f v4l2 \
    
        -framerate 25 -video_size 640x480 -i /dev/video0 \
    
    -f mpegts \
    
        -codec:v mpeg1video -s 640x480 -b:v 1000k -bf 0 \
    
    http://localhost:8081/supersecret

    My webcam supports resolutions, framerates and formats as in code below :

    [video4linux2,v4l2 @ 0x2655360] Compressed:       mjpeg :          Motion-JPEG : 1920x1080 1280x720 1024x768 640x480 800x600 1280x1024 320x240
    
[video4linux2,v4l2 @ 0x2655360] Raw       :     yuyv422 :           YUYV 4:2:2 : 1920x1080 1280x720 1024x768 640x480 800x600 1280x1024 320x240

    While I change in above code the resolution from 640x480 to e.g. 1024x768, I get an error :

    [mpeg1video @ 0x110f4e0] MPEG1/2 does not support 10/1 fps
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    I assume that camera driver change number of fps and MPEG1/2 doesn’t support that numer of fps.
    Probably I get from camera raw data (yuyv422) and it can’t play it with higer framerate when e.f. 10 for 1024x768.
    How Can I modify ffmped execution code in order to stream video in Full HD resulution ?

  • using ffmpeg to record highest resolution offered by Facetime cameras (mac)

    7 mai 2017, par user1361529

    I am using the following code successfully to record a video feed from my mac

    ./ffmpeg -f avfoundation -framerate 30  -i "default" out.mp4

    This however seems to be recording video at the lowest resolution of 320x200

    My camera supports the following resolutions :

    [avfoundation @ 0x7ff7b2800000] Supported modes:
    
[avfoundation @ 0x7ff7b2800000]   1280x720@[1.000000 30.000000]fps
    
[avfoundation @ 0x7ff7b2800000]   640x480@[1.000000 30.000000]fps
    
[avfoundation @ 0x7ff7b2800000]   320x240@[1.000000 30.000000]fps

    I tried manually specifying the resolution using both -s and -video_size but that seems to just scale up the low res video.

    How do I get ffmpeg to pick my 1280x720 resolution ?

    thanks

  • How to transcode a video to custom resolution using Xamarin.MP4Transcoder.Transcoder

    12 mai 2017, par Prashant

    I need to transcode a video to 640*480 resolution using Xamarin.MP4Transcoder.Transcoder. Currently there are 2 available resolutions 720pFormat and 960x540Format. There is a method called Transcoder For (IMediaFormatStrategy strategy) available in Transcoder class.

    I can create MediaFormat object with MIME Type, Width and Height
    by below mentioned code snippet :

    MediaFormat obj = MediaFormat.CreateVideoFormat("video/mp4", 480, 640);


    but the problem is how can assign it to IMediaFormatStrategy or is there any other way to achieve this.

    Piece of code for Transcoding a video:
    

    
Xamarin.MP4Transcoder.Transcoder.For960x540Format().ConvertAsync(inputFile, outputFile, f =>
                                {
                                  onProgress?.Invoke((int)(f * (double)100), 100);

                                  
                                } );
    

    
inputFile: Video file which needs to be transcoded.
    
outputFile: Resultant file generated after transcoding.

    For more info you can refer https://github.com/neurospeech/xamarin-android-ffmpeg

    Any help is appreciated. Thanks in advance !!

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