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Sur d’autres sites (14236)

  • FFMPEG multicast on tvOS

    13 juillet 2016, par David Němec

    I’m trying to open multicast stream with FFMPEG on tvOS, but following command :

    avformat_open_input(&pFormatCtx, [sdpString UTF8String], NULL, NULL)

    fails with error code -1094995529 and prints error

    setsockopt(MCAST_JOIN_SOURCE_GROUP): Can't assign requested address

    Here is snippet from failing FFMPEG code located in udp.c

        if (setsockopt(sockfd, level,
    
                   include ? MCAST_JOIN_SOURCE_GROUP : MCAST_BLOCK_SOURCE,
    
                   (const void *)&mreqs, sizeof(mreqs)) < 0) {
    
        if (include)
    
            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_JOIN_SOURCE_GROUP)");
    
        else
    
            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_BLOCK_SOURCE)");
    
        return ff_neterrno();
    
    }

  • FFmpeg not linked correctly ?

    11 mai 2014, par Aleksander Fimreite

    I’m trying to load and display a video using SDL, and FFmpeg.
    So far I’ve run into alot more trouble than any other libraries I’ve tried.
    Now I can run the program and see an almost black screen. BUT the problem is, if I uncomment any of the lines in the loadVideo(...) function, I will get a linker error.

    I’m using the files from "FFmpeg git-4cdea92 64-bit Dev", and the "FFmpeg git-4cdea92 64-bit Shared" to get the DLL-files. Located at the link :
    http://ffmpeg.zeranoe.com/builds/

    void loadVideo(string file) {
    
    //Initialize video
    
    //av_register_all();
    
    AVFormatContext *pFormatCtx;
    
    //if (avformat_open_input(&pFormatCtx, file.c_str(), NULL, NULL) != 0) {
    
        //printf("Unable to open video file '%s'!\n", file.c_str());
    
    //}
    
}

  • Node.js ffmpeg download M3U8 URL as MP4

    9 mai 2017, par Lars Erik Storbukås

    I’ve installed ffmpeg.js using Node.js.

    I want to be able to give an URL as an argument (where the resource located at the URL is an M3U8 file), and download it as an MP4.

    With regular command line ffmpeg (not JavaScript ported), the command would be the following :

    ffmpeg -i http://example.com/file.m3u8 -c copy out.mp4

    I’ve tried the following, but it doesn’t work.

    var ffmpeg = require("ffmpeg.js");
    
var fs = require("fs");
    

    
var result = ffmpeg({
    
  arguments: ["-i", "http://example.com/file.m3u8", "-c", "copy", "out.mp4"],
    
});
    

    
fs.writeFileSync("out.mp4", Buffer(result));

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