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• Change AVI creation date with ffmpeg ?

  1er novembre 2016, par brock

  As far as I can tell the following ffmpeg command should copy all existing metadata in the input file to the output file and modify the specified field in the output file :

  ffmpeg -i VID_20130502_220104.avi -metadata creation_time="2013-05-02 22:01:04" -codec copy VID_20130502_220104-2.avi

  Instead, it seems to strip all metadata from the output file. Here is the output of a few commands. I am going nuts. I think this should work, but why is it not ?

  Command to edit the creation time :

  ffmpeg -i VID_20130502_220104.avi -metadata creation_time="2013-05-02 22:01:04" -codec copy VID_20130502_220104-2.avi
  
  
  
  ffmpeg version 3.1.5 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 48.101 / 57. 48.101
  
    libavformat    57. 41.100 / 57. 41.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 47.100 /  6. 47.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Input #0, avi, from 'VID_20130502_220104.avi':
  
    Metadata:
  
      encoder         : 
  
      maker           : NIKON
  
      model           : COOLPIX S4300
  
      creation_time   : 2011-01-01 00:00:00
  
    Duration: 00:01:30.50, start: 0.000000, bitrate: 32135 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, 31782 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, 1 channels, s16, 352 kb/s
  
  [avi @ 000000000032ad40] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 1 times
  
  Output #0, avi, to 'VID_20130502_220104-2.avi':
  
    Metadata:
  
      creation_time   : 2013-05-02 22:01:04
  
      maker           : NIKON
  
      model           : COOLPIX S4300
  
      ISFT            : Lavf57.41.100
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, q=2-31, 31782 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, 352 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=  891 fps=0.0 q=-1.0 size=  116171kB time=00:00:29.69 bitrate=32043.1kbits/s speed=59.4x    
  
  frame= 1739 fps=1739 q=-1.0 size=  227191kB time=00:00:57.96 bitrate=32107.5kbits/s speed=  58x    
  
  frame= 2609 fps=1739 q=-1.0 size=  340940kB time=00:01:26.96 bitrate=32115.9kbits/s speed=  58x    
  
  frame= 2715 fps=1734 q=-1.0 Lsize=  355018kB time=00:01:30.49 bitrate=32136.3kbits/s speed=57.8x    
  
  video:350984kB audio:3897kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.038597%

  Command to inspect the output file metadata with ffmpeg :

  ffmpeg -i VID_20130502_220104-2.avi
  
  
  
  ffmpeg version 3.1.5 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 48.101 / 57. 48.101
  
    libavformat    57. 41.100 / 57. 41.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 47.100 /  6. 47.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Input #0, avi, from 'VID_20130502_220104-2.avi':
  
    Metadata:
  
      encoder         : Lavf57.41.100
  
    Duration: 00:01:30.50, start: 0.000000, bitrate: 32136 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, 31782 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, 1 channels, s16, 352 kb/s
  
  At least one output file must be specified

  Command to inspect the input file metadata with exiftool :

  exiftool.exe VID_20130502_220104.avi
  
  
  
  ExifTool Version Number         : 10.30
  
  File Name                       : VID_20130502_220104.avi
  
  Directory                       : .
  
  File Size                       : 347 MB
  
  File Modification Date/Time     : 2013:05:13 16:33:52-04:00
  
  File Access Date/Time           : 2015:11:10 23:08:25-05:00
  
  File Creation Date/Time         : 2015:11:10 23:08:25-05:00
  
  File Permissions                : rw-rw-rw-
  
  File Type                       : AVI
  
  File Type Extension             : avi
  
  MIME Type                       : video/x-msvideo
  
  Frame Rate                      : 30
  
  Max Data Rate                   : 488.3 kB/s
  
  Frame Count                     : 2715
  
  Stream Count                    : 2
  
  Stream Type                     : Video
  
  Video Codec                     : mjpg
  
  Video Frame Rate                : 30
  
  Video Frame Count               : 2715
  
  Quality                         : 10000
  
  Sample Size                     : Variable
  
  Image Width                     : 1280
  
  Image Height                    : 720
  
  Planes                          : 1
  
  Bit Depth                       : 24
  
  Compression                     : MJPG
  
  Image Length                    : 2764800
  
  Pixels Per Meter X              : 0
  
  Pixels Per Meter Y              : 0
  
  Num Colors                      : Use BitDepth
  
  Num Important Colors            : All
  
  Audio Codec                     : 
  
  Audio Sample Rate               : 22050
  
  Audio Sample Count              : 1995256
  
  Encoding                        : Microsoft PCM
  
  Num Channels                    : 1
  
  Sample Rate                     : 22050
  
  Avg Bytes Per Sec               : 44100
  
  Bits Per Sample                 : 16
  
  Maker Note Type                 : NIKON
  
  Maker Note Version              : 0.1.0.0
  
  Make                            : NIKON
  
  Model                           : COOLPIX S4300
  
  Software                        : V1.0
  
  Equipment                       : NIKON DIGITAL CAMERA
  
  Orientation                     : Horizontal (normal)
  
  Exposure Time                   : 1/15
  
  F Number                        : 3.5
  
  Exposure Compensation           : 0
  
  Max Aperture Value              : 3.2
  
  Metering Mode                   : Multi-segment
  
  Focal Length                    : 4.6 mm
  
  X Resolution                    : 72
  
  Y Resolution                    : 72
  
  Resolution Unit                 : inches
  
  Date/Time Original              : 2011:01:01 00:00:00
  
  Create Date                     : 2011:01:01 00:00:00
  
  Focus Mode                      : AF-S
  
  Digital Zoom                    : 1
  
  Color Mode                      : COLOR
  
  Sharpness                       : AUTO
  
  White Balance                   : NORMAL
  
  Noise Reduction                 : OFF
  
  Thumbnail Image                 : (Binary data 3082 bytes, use -b option to extract)
  
  Aperture                        : 3.5
  
  Duration                        : 0:01:30
  
  Image Size                      : 1280x720
  
  Megapixels                      : 0.922
  
  Shutter Speed                   : 1/15
  
  Focal Length                    : 4.6 mm

  Command to inspect the output file metadata with exiftool :

  exiftool.exe VID_20130502_220104-2.avi
  
  
  
  ExifTool Version Number         : 10.30
  
  File Name                       : VID_20130502_220104-2.avi
  
  Directory                       : .
  
  File Size                       : 347 MB
  
  File Modification Date/Time     : 2016:11:01 00:17:38-04:00
  
  File Access Date/Time           : 2016:11:01 00:17:36-04:00
  
  File Creation Date/Time         : 2016:11:01 00:15:18-04:00
  
  File Permissions                : rw-rw-rw-
  
  File Type                       : AVI
  
  File Type Extension             : avi
  
  MIME Type                       : video/x-msvideo
  
  Frame Rate                      : 30
  
  Max Data Rate                   : 3923 kB/s
  
  Frame Count                     : 2715
  
  Stream Count                    : 2
  
  Stream Type                     : Video
  
  Video Codec                     : MJPG
  
  Video Frame Rate                : 30
  
  Video Frame Count               : 2715
  
  Quality                         : Default
  
  Sample Size                     : Variable
  
  Image Width                     : 1280
  
  Image Height                    : 720
  
  Planes                          : 1
  
  Bit Depth                       : 24
  
  Compression                     : MJPG
  
  Image Length                    : 2764800
  
  Pixels Per Meter X              : 0
  
  Pixels Per Meter Y              : 0
  
  Num Colors                      : Use BitDepth
  
  Num Important Colors            : All
  
  Audio Codec                     : .
  
  Audio Sample Rate               : 22050
  
  Audio Sample Count              : 1995256
  
  Encoding                        : Microsoft PCM
  
  Num Channels                    : 1
  
  Sample Rate                     : 22050
  
  Avg Bytes Per Sec               : 44100
  
  Bits Per Sample                 : 16
  
  Software                        : Lavf57.41.100
  
  Duration                        : 0:01:30
  
  Image Size                      : 1280x720
  
  Megapixels                      : 0.922

• Premium Plugins now available on the Piwik Analytics Marketplace

  2 novembre 2016, par Piwik Core Team — Community, Press Releases

  We are super excited to announce the launch of three new premium plugins which are now available on the Piwik Marketplace : A/B Testing, Media Analytics, and Activity Log.

  All three plugins are easy to use and come with 100% data ownership, documentation, integration with Piwik, powerful data exports and no data limits.

  These first premium plugins and the new Marketplace capabilities have been designed and built with love by InnoCraft – the new company brought to you by the makers of Piwik.

  1. A/B Testing

  A/B Testing helps you grow your business by comparing different versions of your website or app to detect the most successful version that increases your sales, revenue, conversions, pageviews, and more.

  A/B tests are also known as experiments or split tests. In an A/B test you show two or more different variations to your users (visitors) and the variation that performs better wins. When a user enters the experiment, a variation will be randomly chosen and the user will see this variation for all subsequent visits. Piwik A/B testing uses advanced statistical analysis to detect which variation performs better for your conversion goals and success metrics. Even small tests can increase your sales and conversions massively !

  Get it now on the Marketplace

  Learn more here :

  • A/B Testing – Experiments (website).
  • List of all features on the Marketplace : A/B Testing Plugin.

  • The A/B Testing User Guide and the A/B Testing FAQ help you getting started in running A/B tests. The A/B Testing developer guides help you embedding and implementing A/B tests into your project.

  • A/B Testing Platform for Piwik Analytics (blog post).

  

  2. Media Analytics

  Do you have videos or audio on your website, or in an app ? Media Analytics gives you powerful insights into how your audience watches your videos and listens to your audio, to ultimately maximize your success.

  Learn all about your audience. Which media your users are playing, for how long, how often, and where they dropped off ? Where are your users located around the world ? Who your audience are and what did people do before and after watching a video or listening to audio ? Many of the reports are also available in Real time, so you can gain insights and react quickly.

  Get it now on the Marketplace

  Learn more here :

  • Media Analytics (website).
  • List of all features on the Marketplace : Media Analytics plugin.
  • Screenshots for Media Analytics.

  • The Media Analytics User Guide and the Media Analytics FAQ cover on how to get the most out of this plugin. The Media Analytics developer guides help you setting up the tracking of your video and audio.

  • 
    Powerful Video Analytics and Audio Analytics for Piwik
    (blog post).

  

  3. Activity log

  Keep an eye on everything that is happening on your Piwik platform with the Activity Log plugin.

  The activity log, also known as audit log or audit trail, improves your Piwik’s security and diagnostic by showing a chronological set of entries that provides documentary evidence of activities that happened in your Piwik. It allows Piwik Super Users to quickly review the actions performed by members of your organization or clients, and also lets every user review details of their own actions.

  Get it now on the Marketplace

  Learn more in the Activity Log FAQ or see a list of all the features on the Marketplace : Activity Log plugin.

  

  The Piwik Marketplace guarantees

  Purchasing on the Piwik Marketplace is easy and safe. Check out our guarantees :

  • Marketplace refund policy : 14 Day Money Back Guarantee.
  • Safe & Secure Payments.
  • 1-click Installation & Update.

  Why premium plugins ?

  Researching, building, documenting, testing and maintaining quality products take years of experience and months of work. When you purchase a premium plugin from the Marketplace, you get a fully working product, with free updates for the duration of the license and you stay in full control of your analytics data. When purchasing premium plugins you also directly help the Piwik core engineers to continue to grow and innovate ! That’s because a % of earnings on premium plugin license sales directly fund new Piwik versions and more amazing features. Learn more in the FAQ : What are premium plugins ?.

  About InnoCraft

  These first three premium plugins have been designed and built with love by InnoCraft. InnoCraft is a new company founded by the creator of Piwik along with the lead engineers of Piwik based in Wellington, New Zealand. At InnoCraft, product experts, designers and engineers are passionate about crafting high quality and innovative products to help grow your business and to maximize your success.

  Learn more on the company website : www.innocraft.com

  To stay updated on their releases, follow InnoCraftHQ on Twitter or Like InnoCraft on Facebook.

  

  Is the Piwik Marketplace open to all ?

  Yes, our marketplace allows other companies and developers to sell their plugins to all Piwik Analytics users. If you are a developer or a company interested in selling your plugin(s) on our Marketplace please contact us. As a developer selling plugins, you will get paid every month for your earnings, and you will be able to see detailed reports about your sales, upload new plugin updates, respond to pre-sales enquiries, etc.

  Resources

  Learn more :

  • The Piwik.org Privacy Policy has been updated (a new “Scope” and “Contact us” sections).
  • New Terms and Conditions for the Piwik Marketplace (plugins.piwik.org).
  • New Piwik Marketplace FAQs.
  • What are premium plugins and how do they differ from free plugins ?.

  We are looking forward to your continued support with the Piwik project as we expand and offer you more ways to maximize your success.

  Please contact the Marketplace team with any questions or feedback.

  Wishing you a warm : Happy Analytics !

• Unable to Access IP Camera in OpenCV

  3 janvier 2017, par user7258890

  I’m trying to use Javafx and OpenCV to access a webcam (Axis M1013) over wireless to run vision processing for my FRC team. When I run my code, I can access the GUI that I made using Scenebuilder, but when I try to start the camera, the program crashes. It seems to me like it’s having trouble utilizing the VideoCapture class. I know for a fact that my problem is not with the camera, because i can access the feed through a browser feed, and my laptop’s webcam will work fine. I’m using OpevCV version 2.4.13, jdk 8u101x64, and ffmpeg 3.2

  I have looked at other posts at :

  stackoverflow.com/questions/18625948/opencv-java-unsatisfiedlinkerror

  answers.opencv.org/question/21720/java-webcam-capture

  answers.opencv.org/question/20071/unsatisfiedlinkerror-given-by-highghuiimread-on-java

  I have tried the solutions mentioned in all of these. So far, none have resolved my problem.

  My code is based mostly off the tutorials at :

  opencv-java-tutorials.readthedocs.io/en/latest/03-first-javafx-application-with-opencv.html

  Here is my main java code :

      @Override 
  
  public void start(Stage primaryStage) {
  
      System.load("C:\\opencv\\build\\x64\\vc12\\bin\\opencv_ffmpeg_64.dll");
  
      try {
  
          FXMLLoader loader = new FXMLLoader(getClass().getResource("Sample.fxml"));
  
          BorderPane root = (BorderPane) loader.load();
  
          Scene scene = new Scene(root, 400, 400);
  
          scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
  
          primaryStage.setScene(scene);
  
          primaryStage.show();
  
      } catch(Exception e) {
  
          System.out.println("error opening camera gui");
  
      }
  
  }
  
  
  
  public static void main(String[] args) {
  
      launch(args);
  
  }

  And here is my camera controller :

  public class SampleController {
  
  @FXML
  
  private Button Start_btn;
  
  
  
  @FXML
  
  private ImageView currentFrame;
  
  private ScheduledExecutorService timer;
  
  private VideoCapture capture;
  
  private boolean cameraActive = false;
  
  
  
  @FXML
  
  public void startCamera()
  
  {
  
      System.loadLibrary("opencv_ffmpeg_64");
  
      if (!this.cameraActive)
  
      {
  
          try
  
          {
  
           capture = new VideoCapture("http://FRC:FRC@axis-camera-223-catapult.lan:554/mjpg/1/video.mjpg");
  
          }
  
          catch (Exception e)
  
          {
  
              System.out.println("an error occured when attempting to access camera.");
  
          }
  
          // is the video stream available?
  
          if (this.capture.isOpened())
  
          {
  
              this.cameraActive = true;
  
  
  
              // grab a frame every 33 ms (30 frames/sec)
  
              Runnable frameGrabber = new Runnable() {
  
  
  
                  @Override
  
                  public void run()
  
                  {
  
                      // effectively grab and process a single frame
  
                      Mat frame = grabFrame();
  
                      // convert and show the frame
  
                      Image imageToShow = Utils.mat2Image(frame);
  
                      updateImageView(currentFrame, imageToShow);
  
                  }
  
              };
  
  
  
              this.timer = Executors.newSingleThreadScheduledExecutor();
  
              this.timer.scheduleAtFixedRate(frameGrabber, 0, 33, TimeUnit.MILLISECONDS);
  
  
  
              // update the button content
  
              this.Start_btn.setText("Stop Camera");
  
          }
  
          else
  
          {
  
              // log the error
  
              System.err.println("Impossible to open the camera connection...");
  
          }
  
      }
  
      else
  
      {
  
          // the camera is not active at this point
  
          this.cameraActive = false;
  
          // update again the button content
  
          this.Start_btn.setText("Start Camera");
  
  
  
          // stop the timer
  
          this.stopAquisition();
  
      }
  
  
  
      System.out.println("Camera is now on.");
  
  }
  
  
  
  /**
  
   * Get frame from open video
  
   * @return
  
   */
  
      private Mat grabFrame()
  
  
  
      {
  
          Mat frame = new Mat();
  
          if (this.capture.isOpened())
  
          {
  
              try
  
              {
  
                  this.capture.read(frame);
  
  
  
                  }
  
          catch (Exception e)
  
          {
  
              System.err.println("Exception during the image elaboration: " + e);
  
          }
  
      }
  
      return frame;
  
  }
  
      private void stopAquisition()
  
      {
  
          if (this.timer!=null && !this.timer.isShutdown())
  
          {
  
              try
  
              {
  
                  this.timer.shutdown();
  
                  this.timer.awaitTermination(33, TimeUnit.MILLISECONDS);
  
              }
  
              catch (InterruptedException e)
  
              {
  
                  System.err.println("Exception in stopping the frame capture, trying to release camera now..." + e);
  
  
  
              }
  
          }
  
          if (this.capture.isOpened())
  
          {
  
              this.capture.release();
  
          }
  
      }
  
      private void updateImageView(ImageView view, Image image)
  
      {
  
          Utils.onFXThread(view.imageProperty(), image);
  
      }
  
      protected void setClosed()
  
      { 
  
          this.stopAquisition();
  
      }
  
  }

  When I try and run this as i have said before, the GUI will launch, but when i try and open the camera, i get an error message :

  Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
  
  at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
  
  at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
  
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
  
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
  
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
  
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
  
  at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
  
  at javafx.event.Event.fireEvent(Event.java:198)
  
  at javafx.scene.Node.fireEvent(Node.java:8411)
  
  at javafx.scene.control.Button.fire(Button.java:185)
  
  at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
  
  at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
  
  at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
  
  at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
  
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
  
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
  
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
  
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  
  at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
  
  at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
  
  at javafx.event.Event.fireEvent(Event.java:198)
  
  at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
  
  at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
  
  at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
  
  at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
  
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
  
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
  
  at java.security.AccessController.doPrivileged(Native Method)
  
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:416)
  
  at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
  
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
  
  at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
  
  at com.sun.glass.ui.View.notifyMouse(View.java:937)
  
  at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
  
  at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
  
  at java.lang.Thread.run(Unknown Source)
  
  Caused by: java.lang.reflect.InvocationTargetException
  
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  
  at java.lang.reflect.Method.invoke(Unknown Source)
  
  at sun.reflect.misc.Trampoline.invoke(Unknown Source)
  
  at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
  
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  
  at java.lang.reflect.Method.invoke(Unknown Source)
  
  at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
  
  at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)
  
  ... 48 more
  
  Caused by: java.lang.UnsatisfiedLinkError:     org.opencv.highgui.VideoCapture.VideoCapture_1(Ljava/lang/String;)J
  
  at org.opencv.highgui.VideoCapture.VideoCapture_1(Native Method)
  
  at org.opencv.highgui.VideoCapture.<init>(VideoCapture.java:128)
  
  at jfxtest1.SampleController.startCamera(SampleController.java:36)
  
  ... 58 more
  
  </init>

  If anyone can help me, that would be much appreciated.

  Thanks in advance.