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• C++ - Failed to stream to youtube with ffmpeg

  27 mars 2022, par Samuel Ives

  Well, I have an open source project similar to OBS but aimed at churches, the repository you can find here, however I'm stuck in the encoding part, avcodec_send_frame after a while just returns Failed to send frame - code : -11 err : Resource temporarily unavailable and never gets to the stage of receiving packets.

  


  I've tried everything including changing the output format to MP4 but the application just crashes, this time I'm challenging myself to a bigger project, I thought I had solved it by changing the codec to H.264 but I was wrong

  


  Basically I'm trying to get OpenCV images from my webcam and send them to youtube

  


  void Broadcast::writeFrame(const cv::Mat &amp;image)&#xA;{&#xA;&#xA;    const int width = image.cols;&#xA;    const int height = image.rows;&#xA;&#xA;    if(swConv == nullptr) {&#xA;        swConv = sws_getContext(width, height, AV_PIX_FMT_RGB24, codecCtx->width, codecCtx->height, codecCtx->pix_fmt, SWS_BILINEAR, nullptr, nullptr, nullptr);&#xA;        if(!swConv) {&#xA;            qCritical() &lt;&lt; "Could not create SwContext";&#xA;            return;&#xA;        }&#xA;    }&#xA;&#xA;    const int stride[4] = { static_cast<int>(image.step[0]) };&#xA;    sws_scale(swConv, &amp;image.data, stride, 0, image.rows, frame->data, frame->linesize);&#xA;    frame->pts = frame_pts&#x2B;&#x2B;;&#xA;&#xA;    int ret = avcodec_send_frame(codecCtx, frame);&#xA;    if(ret &lt; 0) {&#xA;        qWarning() &lt;&lt; "Failed to send frame - code: " &lt;&lt; ret &lt;&lt; " err: " &lt;&lt; av_err2str(ret);;&#xA;        return;&#xA;    }&#xA;&#xA;    qDebug() &lt;&lt; "AA " &lt;&lt; ret;&#xA;&#xA;    // Encode frames into packet&#xA;    while(ret > 0) {&#xA;&#xA;        qDebug() &lt;&lt; "BB " &lt;&lt; ret;&#xA;&#xA;        ret = avcodec_receive_packet(codecCtx, pkt);&#xA;        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {&#xA;            return;&#xA;        } else if(ret &lt; 0) {&#xA;            qCritical() &lt;&lt; "Error reciving packets: " &lt;&lt; av_err2str(ret);&#xA;            break;&#xA;        }&#xA;&#xA;        qDebug() &lt;&lt; "CC";&#xA;&#xA;        av_write_trailer(ofctx);&#xA;        //av_packet_unref(pkt);&#xA;&#xA;    }&#xA;&#xA;    qDebug() &lt;&lt; "Frames " &lt;&lt; frame_pts;&#xA;&#xA;}&#xA;</int>

  


• Streaming to facebook rtmps gives TLS connection error

  18 juin 2021, par jdramer

  I am trying to stream to Facebook with ffmpeg. As of late 2019 the connection requirement is rtmps. Using the stock Debian Buster ffmpeg the TLS connection fails.

  


  FFMPEG Version

  


  ffmpeg version 4.1.6-1~deb10u1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --prefix=/usr --extra-version='1~deb10u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared


  


  Stream command

  


  $ ffmpeg -i "rtmp://127.0.0.1/restream/STREAMKEY" -threads 1 -vcodec copy -acodec copy -f flv "rtmps://live-api-s.facebook.com:443/rtmp/FSTREAMKEY"


  


  Error

  


  [rtmps @ 0x55d9e0e3ea40] Cannot open connection tls://live-api-s.facebook.com:443
rtmps://live-api-s.facebook.com:443/rtmp/FSTREAMKEY: Resource temporarily unavailable


  


  Am I missing something ?

  


• How Can I Configure Storybook to Use React-App-Rewired ?

  8 août 2022, par joseph

  I'm working on a project that implements react-app-rewired to send headers to the server in order to bypass ReferenceError: SharedArrayBuffer is not defined (I'm getting this error from using the @ffmpeg/ffmpeg library).

  


  // config-overrides.js
const {
  override,
  // disableEsLint,
  // addBabelPlugins,
  // overrideDevServer
} = require('customize-cra')

module.exports = {
  devServer(configFunction) {
    // eslint-disable-next-line func-names
    return function (proxy, allowedHost) {
      const config = configFunction(proxy, allowedHost)

      // Set loose allow origin header to prevent CORS issues
      config.headers = {
        'Access-Control-Allow-Origin': '*',
        'Cross-Origin-Opener-Policy': 'same-origin',
        'Cross-Origin-Embedder-Policy': 'require-corp',
        'Cross-Origin-Resource-Policy': 'cross-origin'
      }

      return config
    }
  }
}


  


  // package.json
"scripts": {
  "start": "react-app-rewired start",
  "build": "react-app-rewired build",
  "test": "react-app-rewired test  --transformIgnorePatterns \"node_modules/(?!siriwave)/\"",
  "eject": "react-scripts eject",
  "storybook": "start-storybook -p 6006 -s public",
  "build-storybook": "build-storybook -s public"
}


  


  Though this works when I run npm start, meaning the headers get sent to the server, it doesn't work when I run npm run storybook, and I still get the SharedArrayBuffer is not defined error. I'm assuming it's because npm run storybook still uses react-scripts as opposed to react-app-rewired under the hood, but I'm not sure where I can change the configurations for this. Any ideas ?