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• There is a video stream option and player. But can't find where to manage video and stream

  26 janvier 2018, par Chanaka De Silva

  I’m working on this repository. in this application, we can upload a video taken by a action camera or drone, and it uses GPS coordinates (lat,lang) and draw the path of the video in the map. And also we can play the video via the system too after upload.

  Bt the size of the video is too much high. So it take a lot of time to process video and also download and play when we host in a server. I wanted to reduce size. So I write this code.

  try {
  
  new ffmpeg('demo.mp4', function (err, video) {
  
      if (!err) {
  
          video
  
              .setVideoSize('50%', true, false)
  
              .setVideoFrameRate(30)
  
              .save('output.mp4', function (error, file) {
  
                  if (error) {
  
                      console.log("error : ", error);
  
                  }
  
                  if (!error)
  
                      console.log('Video file: ' + file);
  
              });
  
          console.log('The video is ready to be processed');
  
      } else {
  
          console.log('Error: ' + err);
  
      }
  
  });

  }

  But the issue is I can’t find where is the video coming from in this application. We need to pass like "demo.mp4" to my code as you can see. This is the index file if this application : https://github.com/chanakaDe/replay-lite/blob/master/frontend/index.html

  And this is the player file : https://github.com/chanakaDe/replay-lite/blob/master/frontend/player.js

  This is the file called api.js : https://github.com/chanakaDe/replay-lite/blob/master/frontend/api.js

  This file also has some video functions : https://github.com/chanakaDe/replay-lite/blob/master/gopro/index.js

  Please guys, sometimes you will see this questions as a silly question. But you have the repo to check and can you guys please check and let me know where to get a video file or stream to add my size reduce code ?

• FFmpeg NaCl module avformat_open_input (on rtsp stream) returns -5 : I/O error

  8 janvier 2016, par Taimoor Alam

  I want to create an RTSP player in Chrome PNaCl.

  I have successfully built the ffmpeg naclport including the following networking flags in the build.sh file for the ffmpeg NaCl port.

  —enable network —enable-protocols —enable-demuxer=rtsp —enable-demux=rtp —enable-demuxer=sdp —enable-decoder=h264

  Furthermore, I have successfully coded and the linked the ffmpeg NaCl port in my own PNaCl module. I have included the following network permissions in the manifest.json file :

  "permissions": [
  
  {
  
      "socket": [
  
          "tcp-listen:*:*", 
  
          "tcp-connect:*:*", 
  
          "resolve-host:*:*", 
  
          "udp-bind:*:*", 
  
          "udp-send-to:*:*"
  
      ],
  
  }

  Now once I run the following code, in PNaCl, the avformat_open_input(...) returns -5 or I/O Error :

      AVFormatContext* formatContext = avformat_alloc_context();
  
  
  
      av_register_all();
  
  
  
      avformat_network_init();
  
  
  
      const char * stream_path = "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_115k.mov";
  
  
  
      int result = avformat_open_input(&formatContext, stream_path ,NULL,NULL);
  
  
  
      if(result< 0){
  
  
  
          PostMessage("input not opened, result: ");
  
  
  
          PostMessage(result);
  
  
  
      }else{
  
  
  
        PostMessage(std::string("input successfully opened"));
  
  
  
      }

  What am I possibly doing wrong, and why can’t the PNaCl module access the RTSP stream ?

  PS. This is a similar question, but it gives no definitive answer.

• mergeToFile returns null

  4 avril 2020, par Andrew Roberts

  I am trying to use fluent ffmpeg to merge a bunch of audio files into a single file, yet I keep recieving an error that the output is null/ doesn't exist.
My code :

  



       var ffmpeg = require("fluent-ffmpeg");
     var command = ffmpeg();
     for (var inputPath of filePaths) {
        command.addInput(inputPath);
        console.log("Added path:" + inputPath);
    }
    command
        .on('error', (err) => {
            console.log('An error occurred: ' + err.message);
        })
        .on('end', () => {
            console.log('Merging finished !');
        })
        .mergeToFile(path.join(os.tmpdir(), "result.mp3"), os.tmpdir());


  



  Error code :

  



  


  Read Error : Error : ENOENT : no such file or directory, open '/tmp/result.mp3'