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• I can't get any error messages on node.js spawn, using ffmpeg

  21 mars 2021, par rickster26ter1

  I am trying to get the errors from a spawn process on nodejs, trying to run FFMPEG. I have not run a child process before explicitly, so I'm not sure this is right, but what I have gathered from code examples online :

  


      const {spawn} = require('child_process');
    async function(req,res){
           
    console.log(res.req.files.data[0].path);
    var tst_loc = res.req.files.data[0].path;
    try {
            var the_arr = tst_loc.split('/');
            the_arr.pop();
            tst_loc1 = the_arr.join('/') +"/test.avi";
            console.log("HERE");
            var cmd = 'ffmpeg';
                var tstspawn = spawn(cmd, [
                '-i', tst_loc,
                '-s', '800x400',
                '-b:v', '64k',
                '-c:v', 'avi',
                '-c:a', tst_loc1,
                '-o', outputfilename
            ], (error, stdout, stderr) => {
                  if (error) {
                      console.error('Error!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:', stderr);
                      throw error;
                  }
                  console.log('Success!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!', stdout);
            })
            
            tstspawn.stderr.on('data', function(data) {
            //Here is where the error output goes

               console.log('stderr: ' + data);

               data=data.toString();
               scriptOutput+=data;
            });
       

 
            tstspawn.stderr.on('error',function(error){
              console.log(error);
            });

  } catch (e) {
    console.log(e.code);
    console.log(e.msg);
  }


  


  Returns only my console logs of the path data, the console log of the "HERE", and nothing else at all. I know it didn't run properly because I do not get the expected video file that FFMPEG should have output. But I can't get any sort of error message on my console. No crashing of the application or anything...

  


  Thanks for any help,

  


• error.h : Do not circularly depend on avutil.h

  13 décembre 2013, par Diego Biurrun

  error.h : Do not circularly depend on avutil.h
  

  • [DH] libavutil/error.h

• Displaying RTSP-Stream using Xuggler : org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 34 60, bytestream (td)

  10 avril 2016, par Wenonah

  I’m new to displaying RTSP-Streams and Xuggler, so I really don’t know what to do.

  I’m trying to display the Main-Stream of my IP-Camera in a Java-Swing Window and get this :

  

  I also get these errors :

  13:21:45.941 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 8 7, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 34 60, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 8 36, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 68 62, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 118 38, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 60 62, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] cabac decode of qscale diff failed at 1 7
  13:21:46.940 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 1 7, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 28 37, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 18 35, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 17 41, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 53 32, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 31 29, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 21 29, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] left block unavailable for requested intra mode at 0 35
  13:21:49.902 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 0 35, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 17 21, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 46 10, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 109 28, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 60 10, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 11 14, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 101 9, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 76 9, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 86 11, bytestream (td)
  17:47:04.192 [main] ERROR org.ffmpeg - [h264 @ 15AC7660] error while decoding MB 60 24, bytestream (td)
  

  This is part of the code that I use :

  private IMediaListener mediaListener = new MediaListenerAdapter() {
  
  
  
      @Override
  
      public void onVideoPicture(IVideoPictureEvent event) {
  
          try {
  
              BufferedImage bi = event.getImage();
  
              if (bi != null)
  
                  updateWindow(bi);
  
          } catch (Exception ex) {
  
              LOG.error("Error getting Image from IVideoPictureEvent: " + ex);
  
          }
  
      }
  
  };
  
  
  
  public DisplayWindow() {
  
      display();
  
  }
  
  
  
  private void display() {
  
      IMediaReader mediaReader = ToolFactory
  
              .makeReader("rtsp://user:password@192.168.1.22:554/Streaming/Channels/1");
  
  
  
      mediaReader
  
              .setBufferedImageTypeToGenerate(BufferedImage.TYPE_3BYTE_BGR);
  
      mediaReader.setQueryMetaData(false);
  
      mediaReader.addListener(mediaListener);
  
  
  
      openWindow();
  
  
  
      while (true) {
  
          IError error = null;
  
          if(mediaReader != null){
  
              error = mediaReader.readPacket();
  
              if(error != null){
  
                  LOG.error("Error at mediaReader.readPacket(): " + error);
  
              }
  
          }
  
      }
  
  }

  Displaying the Sub-Stream (which has lower resolution) works well.

  I use Xuggler 5.4 with Maven.

  There probably is a simple solution to this problem, but I’ve searched the whole internet and haven’t found one, so I’d appreciate any help. Thank you !

  UPDATE : I’d also be happy about (free !) alternatives to Xuggler.