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  • 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 (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (10505)

  • Multiple HD video streaming using ffmpeg

    24 mars 2014, par user1199722

    I am trying to stream HD rtsp streams (1080p) from IPcamera over LAN and displaying it.
    streaming is done using openRTSP and decoding is done using ffmpeg.
    For a single frame decoding takes 30-40ms and displaying it on the QTwindow takes another 6-7 ms. When streaming more than 2-3 cameras the whole system is not able to handle it.Can anybody tell me that what could be the best method to approach the problem. Right now I am using a machine with Pentium 64-bit processor with ubuntu 12.04LTS.

    Should I go for Graphics card ? If so which would be better for ffmpeg hardware acceleration ?
    If I have to display 16 videos, Will one graphics card sufficient ?

  • On demand RTSP streaming FFMPEG iPhone

    23 mai 2014, par Tarun Seera

    We are using FFmpeg for real time streaming in iPhone.
    For testing purpose we have hosted a video on local server.When we try to start stream avformat_open_input method always return error code -5.
    I have read some where that is is I/O error but the same URL working fine on VLC media player.
    If we start streaming on VLC first then play it on iPhone it works fine.
    I am not getting where I am wrong the IP address and network connection both are fine.

  • ffmpeg - output 5.1 AAC without lowpass on the LFE channel

    1er janvier 2023, par blendmaster

    I'm trying to encode 6 arbitrary mono audio streams into a single AAC 5.1 track in an mp4 container (here with test streams) :

    


    ffmpeg -f lavfi -i testsrc=duration=10:size=100x100:rate=30 -f lavfi -i aevalsrc="-2+random(0)" -filter_complex "[1:a][1:a][1:a][1:a][1:a][1:a]join=inputs=6:channel_layout=5.1:map=0.0-FL|1.0-FR|2.0-FC|3.0-LFE|4.0-BL|5.0-BR[a]" -map '0:v' -map "[a]" -c:a aac -channel_layout 5.1 -t 10 testlfe.mp4


    


    5 of the channels replicate the input audio just fine (modulo encoding). However, the LFE channel is lowpassed. Extracting with :

    


    ffmpeg -i testlfe.mp4 -filter_complex "channelsplit=channel_layout=5.1:channels=LFE[LFE]" -map '[LFE]' testlfe.wav


    


    I get a lowpassed rumble, instead of the original full white noise

    


    output spectrogram

    


    (from ffmpeg -i testlfe.wav -lavfi showspectrumpic=s=640x320 testlfe.png)

    


    Is there a way to prevent the lowpass from happening ?

    


    I couldn't find any references whether that's inherent to the AAC 5.1 encoding, something that ffmpeg does, or inherent to the decoding process. (I did decode my same test files using something that uses Microsoft MediaFoundation and the LFE channel was still lowpassed).

    


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