Performance and cross-platform problems in JMF

Hi,
I am building an application for audio and video synchronization, I was using the Processing audio and video libraries to deal with the sound and video but I soon changed to JMF because the Processing video library is strongly dependent on quickime and can only deal with .mov files.
I got it to work with all the custom GUI elements I had already built (Like graphical timeline representation with time grid, playhead, timeline zoom control, markers and video controls) and it works, but there are states where I have to make a player.getMediaTime() in every frame to synch the video position of the playing video with my graphical playhead representations, and at that stage the application gets really slow and unstable. Are the getMediaTime() and setMediaTime(Time time) that heavy??? is there a way around it (even if it means expanding the actual JMF classes??)
The other problem is that I tried to run the applet in a MacBookPro and it didn't run, throws a bunch of exceptions saying that it was unable to create the player. what problems could make an applet that runs in windows, not run in Mac OS X??
Thanks in advance, I've been hitting my head on the walls because of this for a while!

Of course, the simple and obvious solution is often the valid one. On Windows you need both: /r/n. It appears I'll still need to #ifdef as doing both on the Mac gives me an extra character, but at least that's manageable.

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      [loaded] com.symantec.navapdaemonsl.plist Support
      [loaded] com.symantec.Sched501-1.plist Support
      [loaded] com.symantec.Sched501-2.plist Support
      [running] com.symantec.sharedsettings.plist Support
      [running] com.symantec.symdaemon.plist Support
      [running] com.symantec.symSchedDaemon.plist Support
    User Launch Agents: ℹ️
      [loaded] com.adobe.ARM.[...].plist Support
    User Login Items: ℹ️
      Canon IJ Network Scanner Selector2 UNKNOWN (missing value)
      AdobeResourceSynchronizer ApplicationHidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)
    Internet Plug-ins: ℹ️
      JavaAppletPlugin: Version: 13.9.8 - SDK 10.6 Check version
      FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
      net.juniper.DSSafariExtensions: Version: (null) Support
      AdobePDFViewerNPAPI: Version: 10.1.4 Support
      Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
      AdobePDFViewer: Version: 10.1.4 Support
      QuickTime Plugin: Version: 7.6.6
      SharePointBrowserPlugin: Version: 14.4.3 - SDK 10.6 Support
      Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support
      iPhotoPhotocast: Version: 7.0 - SDK 10.7
    User Internet Plug-ins: ℹ️
      CitrixOnlineWebDeploymentPlugin: Version: 1.0.92 Support
    Safari Extensions: ℹ️
      Zotero Connector for Safari
    Audio Plug-ins: ℹ️
      iSightAudio: Version: 7.6.6
    3rd Party Preference Panes: ℹ️
      Flash Player  Support
      Norton\nQuickMenu  Support
    Time Machine: ℹ️
      Time Machine information requires OS X 10.7 "Lion" or later.
    Top Processes by CPU: ℹ️
          9% Safari
          4% WindowServer
          1% Microsoft Word
          1% Activity Monitor
          0% activitymonitord
    Top Processes by Memory: ℹ️
      129 MB WebProcess
      105 MB Microsoft Word
      105 MB Safari
      88 MB mds
      60 MB WindowServer
    Virtual Memory Information: ℹ️
      389 MB Free RAM
      1.03 GB Active RAM
      185 MB Inactive RAM
      274 MB Wired RAM
      479 MB Page-ins
      17 MB Page-outs

    I'm replying to myself because I think I found the prime culprit behind my system hanging.  Although there are clearly multiple problems in my system, it appears that a somewhat hidden feature of Norton Firewall was pushing it over the edge. 
    A subsequent rerun of EtreCheck showed this:
    Top Processes by CPU: ℹ️
          49% symdeepsight-extractor
          4% WindowServer
          3% WebProcess
          0% Activity Monitor
          0% Microsoft Word
    Top Processes by Memory: ℹ️
      419 MB WebProcess
      148 MB Safari
      86 MB Microsoft Word
      75 MB WindowServer
      71 MB symdeepsight-extractor
    I had disabled all of Norton's firewall functions already.  But a websearch on symdeepsight-extractor and system problems told me about the following step I hadn't taken.  In Norton Firewall, advanced settings, I turned off Norton Deepsight Community Download, and Norton Deepsight Community Submission.
    Safari speeded up immediately -- video that wouldn't play earlier played without a hitch -- hanging is (mostly) gone.  Hope this info helps someone else even though the subject line is off target! 
    Monica

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