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Autres articles (21)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (4249)

  • Injecting KLV data in video stream using ffmpeg

    29 octobre 2022, par lsilk

    Does anyone here have any experience with streaming video on one stream, for example 0:0, and then taking a .bin file in klv format and putting it in 0:1, and then outputting that to a mpegts udp stream ? I have it working, the only problem is that I have written a python program to update the klv data file while it is streaming, but it doesn't seem to be updated in the stream.

    


    My command : ffmpeg -I "filepath.mpg" -f data -i "filepath.bin" -filter:v fps=60 -map 0:v:0 -map 1:d:0 -f mpegts udp ://IP:PORT

    


    Ive tried -I from a local file, I've also tried streaming the .bin file from an other stream after updating it, but then the fps drops to about 0.5.

    


  • How OpenGL directly manipulates data on GPU that a video hardware decoded by FFmpeg CUDA

    24 janvier 2019, par gn cavalry

    Ubuntu 18.04
    FFmpeg 4.1
    CUDA 10.0

    What I want to do is using FFmpeg CUDA decode a video, directly peocess data on GPU by GLSL , then encode data using FFmpeg CUDA. Like this :

    Raw Video —> FFmpeg CUDA decoder —> GLSL —> FFmpeg CUDA encoder —> New Video

    Here is the short code :

    ret = avcodec_send_packet(decoder_ctx, pkt);
    while (ret >= 0) {
       ret = avcodec_receive_frame(decoder_ctx, frame);

       /**
        * Now CUDA decoded data is stored on GPU and referenced by frame
        * How can GLSL manipulate decoded data on GPU directly,
        * without transfer it to CPU and load to GPU again by glTexImage2D()
        */


       // I don't if the following code is right, if GLSL processed data is still referenced by frame
       while (avcodec_send_frame(encoder_ctx, frame)) {
           avcodec_receive_packet(encoder_ctx, &enc_pkt);
       }
    }

    Can anyone help me ? Thanks very much !

  • Sample RTP code to stream x264 data

    5 août 2016, par Ajay Ponna Venkatesh

    I am using x264 library to encode frames and I need to stream it to a client which will receive the frame, decode and render it.
    Currently, I have borrowed the code from OBS to stream through RTMP and have written a client using FFMPEG’s RTMP code to receive this data. BUT RTMP works on TCP and I now need to stream over UDP. OBS doesn’t seem to support any other protocols than RTMP.

    So, I decided to use RTP. I can write a client to receive and decode using FFMPEG since it supports RTP just like RTMP. Can anyone please help me with sample code to stream x264 encoded data through plain RTP ? (I don’t want to complicate by using RTSP etc. along with RTP).

    The requirement is simple. Say, I use ffplay -> ffplay.exe rtp ://127.0.0.1:17000 then I want this sample code to be able to send data through RTP (over UDP) and ffplay should be able to play. I can take it over from there. Thanks in advance !

    -Ajay