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Autres articles (75)

  • Demande de création d’un canal

    12 mars 2010, par

    En fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
    Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

Sur d’autres sites (8254)

  • Streaming Encoded MPEG-4 live video from a web camera using RTP in C++

    6 mars 2017, par Maad A.Galil

    I have been working on building a video streamer from a webcam using RTP protocol in C++ language in Linux. I was able to use opencv to take frames from the webcam and send them frame by frame to a client app that shows those frames one by one using the same frame per second parameter.

    But that is mostly a MJPEG kind of transfer as the encoding used is JPEG encoding with a specific quality for each frame. However, I would like to use MPEG-4 encoding before transferring the video. After a deep search online I found out that ffmpeg is the best for such purpose. But the samples online mostly work through a command line interface to capture a webcam video and save it as a video file with the given encoding and format.

    What I am asking about here. Is there a possibility to encode the webcam "LIVE", and get byte data while encoding the camera stream. I would like to use those byte data to transfer it using RTP for example. And then I would like to decode the received byte data and show the video using opencv imshow function for example.

    I hope that I could explain my question clearly.

    Thanks in advanced,

    Yours,
    Maad

  • Rotate video without FFMPEG on Xamarin Android

    6 mars 2017, par nhenrique

    I’ve been searching on how to rotate a video (.mp4) on my Android app. So far I mostly find information on how to change the orientation metadata so the video players can use it to play the video correctly. However I do need to actually rotate the video.

    Portrait videos recorded with the camera are playing in landscape on browsers/players that don’t the support the orientation metadata. I’ve tried to use the the following FFMPEG library for Xamarin but it’s usage is not recommended for Android 6+.

    I also took a look into the MediaCodec API but I can only find information about the orientation metadata.

    Is there any other way to rotate a video on Android ?

  • x264 options for colorprim

    25 septembre 2018, par Kumar Swaminathan

    I have a source with the following color characteristics (as determined by ffprobe using "ffprobe -v error -show_format -show_streams source") colormatrix=smpte170m:colorprim=reserved:transfer=reserved.

    I would like to preserve this and so I encoded with ffmpeg with libx264 by specifying the following x264 specific options :

    "-vcodec libx264 -profile:v baseline -level 3.1 -b:v 2400k -preset medium -x264opts ref=3:keyint=90:colormatrix=smpte170m:colorprim=reserved:transfer=reserved -r 30000/1001"

    But now I get an error =>

    [libx264 @ 0x2234820] bad value for ’colorprim’ : ’reserved’

    Error initializing output stream 0:1 — Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

    What should the ideal mapping here be to preserve the input color characteristics ?

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