Recherche avancée

Médias (0)

Mot : - Tags -/content

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (102)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (4981)

  • Store a live stream when internet connection is interrupted ?

    6 juin 2019, par Marcello Moreira

    I’m building a solution using drone and 3g/4g connection.
    I have an IP camera encoded in H.264 by a hardware encoder connected to a raspberry pi and a 3g/4g modem. The hardware encoder livestream de video via RTMP to a remote server I have. All these devices are in a moving platform, and sometimes the modem loses connection with internet for a few seconds/minutes. When this happens, I want to store the live footage in the raspberry with ffmpeg, and when the connection restores I can send it back to the server. I have access to the encoded livestream from the raspberry pi over LAN even when internet is down.

    I do not know how and where should I start.
    I see two approaches for this.

    First approach

    One is to do all the streaming via ffmpeg, and disable the automatic hardware stream, when ffmpeg detects that it can’t send stream to the remote server, it starts to store the video (like a buffer) until the connection is restore. The issue with this, is that I don’t know if ffmpeg can detect if internet connection is down, and how can I buffer the video. Also by doing this, when connection is restored, live video would have a huge delay, and I can’t have lot’s of delay in my solution.

    Second approach

    The second is simultaneously store with ffmpeg the live video, when internet goes down, a process records the timestamp, and keeps watching until internet connection is restored. Then it sends to my server only the missing piece. At my server I would need to figure out a way to join those streams back up.. (I would gladly accept tips on that too). Issue with this is that there’s limited space in my raspberry, so I can only store a limited amount. Also, my device may be turned off when it lands so I need to send the video recording ASAP after connection is restored.

    So, which approach seems to be the better one ?

  • How to searialize GOPs to bytes and desearialize using FFmpeg ?

    20 avril 2017, par Ye Li

    I’m working on an experiment which needs to read GOPs from a media file (e.g. mp4) and send over a network via UDP sockets. What I’ll need to do are as follows :

    At the source node :

    1, Read a GOP and searialize it into a buffer of bytes (i.e., pointed by uint8_t*) ;

    2, Split the buffer into equal-size packets, perform channel coding amongst the packets and send coded packets via UDP sockets ;

    At the receiver side :

    3, Receive UDP packets and recover the packets into a buffer of bytes. Note that our channel coding scheme can ensure that the content of the buffer is identical to that at the source side, so don’t worry about the lossy nature of UDP ;

    4, Desearialize the buffer to reconstruct GOP ;

    5, Play the GOP.

    And repeat 1-5.

    I have very little experience with FFmpeg APIs. Could someone please point to me which API functions (if exist) I would probably need to look to complete the Steps 1,4,5 ?
    Thanks sincerely.

  • live streaming video file from iphone to internet using FFMpeg

    18 avril 2014, par Luis Mok

    i am trying to live streaming some video content from iphone to the internet (or server). I have read the following post (http://stackoverflow.com/questions/4084811/iphone-http-live-streaming-without-any-server-side-processing)

    And i understand i can first capture the images and audio into file then send it out to the internet. But i really have no idea how to start the work on constantly send out these video files.

    I understand i can use ffmpeg to do the streaming part. after long researching i can only found a sample program called iFrameExtractor using FFmpeg library. But the sample only shows how to use ffmpeg to playback a video file, but no sample on how to use the live streaming function in ffmpeg...

    Can anyone provide a direction or tutorial how to live streaming a video file using ffmpeg ? or anyone can suggest other ways to solve this problem ? i am sure lots of people want to know how to do that.