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• How do I stop watermarking videos with this ffmpeg command line ?

  26 juillet 2019, par D. Messier

  I’m trying to remove the code that adds a watermark to some of our videos, but can’t find the correct solution

  Working with pre-existing code. I am unfamiliar with bash and ffmpeg. We are trying to remove the code that adds a watermark to certain videos. There are plenty of examples on how to add the watermark. But using them to figure out how to remove it has been unsuccessful.

  Original Code

  FFREPORT=file=$folder/ffmpeg.log:level=40 ~/tools/ffmpeg/ffmpeg -ss $startTime -i $folder/0 -i assets/watermark.png -filter_complex "[0:v]scale='if(gt(iw,ih),$size1w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size1h)'[bg];[bg][1:v]overlay=20:(main_h-overlay_h-20),split=5[in1][in2][in3][in4][in5];[in1]scale='if(gt(iw,ih),$size1w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size1h)'[out1];[in2]scale='if(gt(iw,ih),$size2w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size2h)'[out2];[in3]scale='if(gt(iw,ih),$size3w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size3h)'[out3];[in4]scale='if(gt(iw,ih),$size4w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size4h)'[out4];[in5]scale='if(gt(iw,ih),$size4w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size4h)'[out5]" \

  Attempted Change

  I removed -i assets/watermark.png and [bg];[bg][1:v]overlay=20:(main_h-overlay_h-20),

  FFREPORT=file=$folder/ffmpeg.log:level=40 ~/tools/ffmpeg/ffmpeg -ss $startTime -i $folder/0 -filter_complex "[0:v]scale='if(gt(iw,ih),$size1w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size1h)';split=5[in1][in2][in3][in4][in5];[in1]scale='if(gt(iw,ih),$size1w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size1h)'[out1];[in2]scale='if(gt(iw,ih),$size2w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size2h)'[out2];[in3]scale='if(gt(iw,ih),$size3w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size3h)'[out3];[in4]scale='if(gt(iw,ih),$size4w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size4h)'[out4];[in5]scale='if(gt(iw,ih),$size4w,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,$size4h)'[out5]" \

  The error I’m getting is

  Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_split_1

• How to programmatically start/stop FFMPEG stream transcoding

  10 décembre 2019, par Paul Wieland

  I have an ip webcam which provides an MJPEG stream. I can successfully transcode and save that stream with ffmpeg under OSX. The following gives me pretty much what I want :

  ffmpeg -f mjpeg -i "http://user:pass@10.0.1.200/nphMotionJpeg?Resolution=640x480&Quality=Standard" -b:v 1500k -vcodec libx264 /tmp/test.mp4

  That will start an FFMPEG session and begin saving the live stream to my test.mp4 file. pressing q will quit ffmpeg and save the file.

  I would like to programmatically start & stop the recording using a PHP or Bash shell script. I have tried the following :

  <?php
  
  
  
  $pid = pcntl_fork();
  
  
  
  if($pid == -1){
  
      die("could not fork"); 
  
  }elseif($pid){
  
      // we are the parent...
  
      print $pid.' started recording. waiting 10 seconds...';
  
      sleep(10); // Wait 10 seconds
  
  
  
      print_r(shell_exec("kill ".$pid)); // Kill the child recording process
  
  
  
      echo 'done';
  
      exit(); 
  
  }else{
  
      // we are the child process. call ffmpeg.
  
      exec('../lib/ffmpeg -f mjpeg -i "http://user:pass@10.0.1.200/nphMotionJpeg?Resolution=640x480&Quality=Standard" -b:v 1500k -vcodec libx264 /tmp/test.mp4');
  
  }

  But there are two problems :

  1. The ffmpeg process does not end/die (probably because its forked again)
  2. When I manually kill the ffmpeg process, the video file is not readable

• stop or kill node media server

  9 juillet 2019, par user_66663333

  I am trying to implement stop feature for live video streaming using node-media-server.

  Basically I want to stop node-media-server completely, restart it later.

  const NodeMediaServer = require("node-media-server");
  
      let config = {
  
        logType: 3,
  
        rtmp: {
  
          port: rtmpPort,
  
          chunk_size: 60000,
  
          gop_cache: true,
  
          ping: 60,
  
          ping_timeout: 30,
  
        },
  
        http: {
  
          port: httpPort,
  
          allow_origin: "*",
  
        },
  
        relay: {
  
          ffmpeg: "/usr/bin/ffmpeg",
  
          tasks: [
  
            {
  
              app: "cctv",
  
              mode: "static",
  
              edge: "rtsp://" + cameraUrl + "/h264_ulaw.sdp",
  
              name: "uterum",
  
              rtsp_transport: "udp",
  
            },
  
          ],
  
        },
  
      };
  
  
  
      let nms = new NodeMediaServer(config);
  
      nms.run();