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Autres articles (53)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • 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 (...)

Sur d’autres sites (9321)

  • Improving Performance and Quality of Screen Streaming(Headless) with FFMPEG and NVIDIA Hardware Acceleration [closed]

    24 avril 2024, par Dhairya Verma

    I am attempting to stream my screen to an RTMP URL using FFMPEG with X11 for screen capture and NVIDIA's hardware acceleration to enhance performance. Despite using NVIDIA acceleration, the stream is still experiencing lags and low-quality output. I've noticed that FFMPEG is utilizing only about 100MB of GPU memory, which seems low. Here's the command I'm currently using :

    


    ffmpeg -hwaccel cuvid -f x11grab -s 1920x1080 -i :1 -f pulse -i VirtualSink.monitor -c:v h264_nvenc -preset:v p1 -b:v 2500k -maxrate 2500k -bufsize 5000k -vf "fps=30,crop=1280:720:320:180,format=yuv420p" -g 60 -c:a aac -b:a 128k -ar 44100 -f flv rtmps://[RTMP_URL]


    


    Questions :

    


      


    1. Are there any specific settings or tweaks I should consider to fully utilize the GPU for better performance and video quality ?

      


      2. 


    2. Is there a more optimal way to configure the bitrate or buffer size to improve the stream quality without increasing lag ?

      


      3. 


    3. Would adjusting the preset or using different ffmpeg flags help in reducing the load and improving the output ?

      


      4. 


    4. Any advice on optimizing FFMPEG for smoother streaming with hardware acceleration would be greatly appreciated !

      


      5. 


    


  • Android : how to encode a stream of images to h264 with hardware acceleration ?

    2 avril 2014, par mojovski

    I am currently working on an app, to read the camera images and process them using OpenCV.
    I would like to store the original images as a "normal" video and to drop the processed images after processing (after the information is extracted).
    For this I basically need to encode the image stream to h264.
    It will not be possible to use ffmpeg or other solutions wich do it on the general cpu. It has to be done using the internal hardware acceleration.
    Because of this I have actually three questions :

    • Does somebdy know how to achieve h264 encoding using the internal hw-modules to encode videos ?

    • Or does ffmpeg really support this on Android ?

    • Or is there a way access the image stream during the "usual" encoding process ?

    Thanks alot !

  • Enable hardware (GPU) video decode acceleration with ffmpeg C API ?

    8 avril 2019, par MSD Paul

    I am using avcodec_decode_video2() to decode a particular video without enabling any GPU hardware support.

    While I tried to get the hardware decoder by name :

    mVideoCodec = avcodec_find_decoder_by_name("h264_dxva2");

    But its results mVideoCodec = NULL although while running ffmpeg from command prompt using dxva2 hwaccel, no error is being shown. Here I am giving the configuration output what I got from the command prompt. can anyone please tell me how can I enable hardware acceleration properly while using avcodec_decode_video2() API to decode the video in C.

    I am using a laptop with an NVIDIA GPU.

    Log from command prompt :

    C :\ffmpeg\bin>ffmpeg -hwaccel dxva2 -i 9.mp4 -r 60 -vsync 0 -f image2 image-%2d.png**
    configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-cuda —enable-cuvid —enable-d3d11va —enable-nvenc —enable-dxva2 —enable-avisynth —enable-libmfx

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