Installing QuickTime for Java on Windows

To use plugins that require QuickTime you must install QuickTime and copy the file to a location where ImageJ and QuickTime for Java can find it.
  1. Install QuickTime 7
  2. Copy to the Java extensions folder (...ImageJ\jre\lib\ext)
Look for in places like C:\Program Files\QuickTime\QTSystem or C:\Program Files\Java\jre1.5.0\lib\ext, or use the Windows Search function to find it.

To compile a plugin that uses QuickTime for Java using Plugins>Compile and Run, put a copy of in the plugins folder and rename it QTJava.jar.

Installing QuickTime for Java (QuickTime 6 and earlier)

  1. If you haven't already done so, download and install one of the Java Runtime Environments or Java Software Development Kits from Sun. This step is necessary because the QuickTime installer will not install QuickTime for Java if a Sun JRE or SDK is not installed. A JRE or SDK does not need to be installed to run ImageJ or to run QuickTime plugins. ImageJ normally uses the JRE 1.3.1 included in the ImageJ folder.

  2. Download QuickTime from Apple and do a custom installation, selecting "QuickTime for Java" from the list of optional components.

  3. Use the Find program to find the file "".

  4. Open "ImageJ.cfg" (it's in the ImageJ folder) in a text editor such as notepad and add the path to to third line. For example, if is in the C:\Windows\System\ directory then the third line would look something like:
    -Xmx400m -cp ij.jar;C:\Windows\System\ ij.ImageJ
    The -Xmx400 option specifies how much memory is available to ImageJ, in this case 400MB.
Restart ImageJ and you should be able run or "Compile and Run" plugins that use QuickTime.