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Médias (1)

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Autres articles (96)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (5223)

  • win_utf8_io.c : Remove redundant line.

    9 août 2014, par Erik de Castro Lopo
    win_utf8_io.c : Remove redundant line.

    Patch-from : lvqcl <lvqcl.mail@gmail.com>
    • [DH] src/share/win_utf8_io/win_utf8_io.c

  • avdevice/decklink_enc : Add support for compressed AC-3 output over SDI

    7 avril 2023, par Devin Heitmueller
    avdevice/decklink_enc : Add support for compressed AC-3 output over SDI

    Extend the decklink output to include support for compressed AC-3,
    
encapsulated using the SMPTE ST 377:2015 standard.
    

    This functionality can be exercised by using the "copy" codec when
    
the input audio stream is AC-3.  For example :
    

    ./ffmpeg -i /foo.ts -codec:a copy -f decklink 'UltraStudio Mini Monitor'
    

    Note that the default behavior continues to be to do PCM output,
    
which means without specifying the copy codec a stream containing
    
AC-3 will be decoded and downmixed to stereo audio before output.
    

    Thanks to Marton Balint for providing feedback.
    

    Signed-off-by : Devin Heitmueller <dheitmueller@ltnglobal.com>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavdevice/decklink_enc.cpp

  • Can't maintain desired fps with ffmpeg live stream when overlay is added

    1er avril 2019, par jawsware

    I’m attempting to produce a 4K live stream for YouTube.

    I’m capturing 2160p30 frames from a BlackMagic Design DeckLink Mini Recorder. I’m passing those frames to ffmpeg in their raw 8-bit 4:2:2 format. I’m able to achieve 30 fps encoding ( 16kbits/s and q= in the high 20s to low 30s) with my current parameters which are :

    ffmpeg -threads:v 2 -threads:a 8 -filter_threads 2
    
-f rawvideo -framerate 30 -pixel_format uyvy422 -video_size 3840x2160 -i \\.\pipe\videopipe
    
-f s16le -ac 2 -ar 44100 -i \\.\pipe\audiopipe
    
-r 30 -g 60 -c:v h264_nvenc -pix_fmt yuv420p -preset fast -profile main
    
-b:v 16000K -maxrate 24000k -bufsize 6000k
    
-f flv "rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-xxxx"

    I’m dilemma is that once I introduce an overlay graphic, my encoding fps drops to 28 at best. Which leads me to believe I’m barley achieving the 30 fps without the overlay. I’m only adding these parameters to include the overlay :

    -i logo.png
    

    
-filter_complex "overlay=100:100"

    I further diminish the encoding fps (20 fps max) when I introduce a dynamic overlay which I feed to ffmpeg through an additional pipe.

    My questions are 1.) is there a better set a parameters I could be using to encode the 4K stream ? 2.) is there a better way to include the overlay ?

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