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• How to save recorded ffmpeg webcam video to red5

  20 juillet 2014, par user3451310

  im trying to make a webcam recording program that can be accessed remotely by other users. i completed the recording locally but when i try to save it to red5 rtmp ://localhost/oflaDemo/streams/output.flv, no output produced to the streams directory and i don’t know how to stream it from other users while recording. can someone help me on this problem ?tnx heres my code :

  Thread webcam = new Thread()
  public void run()

      String fileName = new SimpleDateFormat("yyyy-MM-dd-hhmm").format(new Date());
  
     try {  
  
     OpenCVFrameGrabber grabber = new OpenCVFrameGrabber(0);  
  
     grabber.start();  
  
     opencv_core.IplImage grabbedImage = grabber.grab();  
  
     CanvasFrame canvasFrame = new CanvasFrame("Video recorder");  
  
     canvasFrame.setCanvasSize(grabbedImage.width(), grabbedImage.height());  
  
     grabber.setFrameRate(grabber.getFrameRate());  
  
  
  
  
  
  
  
     FFmpegFrameRecorder recorder = new FFmpegFrameRecorder("rtmp://localhost/oflaDemo/streams/output.flv", 800, 600);
  
  
  
     recorder.setFormat("flv");  
  
     recorder.setFrameRate(6);  
  
     recorder.setVideoBitrate(1024 * 1024); 
  
  
  
  
  
  
  
  
  
     recorder.start();
  
  
  
  
  
  
  
     while (canvasFrame.isVisible() && (grabbedImage = grabber.grab()) != null) {  
  
       canvasFrame.showImage(grabbedImage);  
  
       recorder.record(grabbedImage);  
  
     }  
  
     recorder.stop();  
  
     grabber.stop();  
  
     canvasFrame.dispose();  
  
  
  
  
  
     recorder.record();
  
  
  
   } catch (FrameGrabber.Exception ex) {  
  
     Logger.getLogger(web.class.getName()).log(Level.SEVERE, null, ex);  
  
   } catch (FrameRecorder.Exception ex) {  
  
     Logger.getLogger(web.class.getName()).log(Level.SEVERE, null, ex);  
  
   }  

   ;
  webcam.start() ;

  }        

• FFmpegFrameGrabber deprecated pixel format error

  14 juin 2018, par TomTom

  I tried to show the images my phone sends over WiFi with JavaCV and the FFmpegFrameGrabber class. Unfortunately I get this error, no matter which pixel format I set (tried from 0 up to 65).

  Input #0, mjpeg, from 'http://IP:PORT/video':
  
  Duration: N/A, bitrate: N/A
  
  Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 640x480 [SAR 1:1 DAR 2:3], 24 tbr, 1200k tbn, 24 tbc    
  
  [swscaler @ 0x7ff6cc3cba00] deprecated pixel format used, make sure you did set range correctly

  This is how I create the FrameGrabber :

  FrameGrabber grabber = new FFmpegFrameGrabber("http://IP:PORT/video");
  
  grabber.setFormat("mjpeg");
  
  grabber.setVideoCodec(8);
  
  grabber.setFrameRate(24);

  And then getting the frame :

  frame = grabber.grab();

  EDIT :

  Apparently this error comes from the ffmpeg library and has something to do with jpeg.

  It is located in : libswscale/utils.c

  Line 975 and 976 cause this error :

  if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat)
  
       av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");

  Unfortunately I am not skilled enough to delete/change this line. So I just ignore this messages as it doesn’t affect the program. Unless someone can recompile an edited version of ffmpeg for mac :)

• FFmpegFrameGrabber deprecated pixel format error

  6 janvier 2015, par TomTom

  I tried to show the images my phone sends over WiFi with JavaCV and the FFmpegFrameGrabber class. Unfortunately I get this error, no matter which pixel format I set (tried from 0 up to 65).

  Input #0, mjpeg, from 'http://IP:PORT/video':
  
  Duration: N/A, bitrate: N/A
  
  Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 640x480 [SAR 1:1 DAR 2:3], 24 tbr, 1200k tbn, 24 tbc    
  
  [swscaler @ 0x7ff6cc3cba00] deprecated pixel format used, make sure you did set range correctly

  This is how I create the FrameGrabber :

  FrameGrabber grabber = new FFmpegFrameGrabber("http://IP:PORT/video");
  
  grabber.setFormat("mjpeg");
  
  grabber.setVideoCodec(8);
  
  grabber.setFrameRate(24);

  And then getting the frame :

  frame = grabber.grab();

  EDIT :

  Apparently this error comes from the ffmpeg library and has something to do with jpeg.

  It is located in : libswscale/utils.c

  Line 975 and 976 cause this error :

  if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat)
  
       av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");

  Unfortunately I am not skilled enough to delete/change this line. So I just ignore this messages as it doesn’t affect the program. Unless someone can recompile an edited version of ffmpeg for mac :)