If QuickTime Player (version 10) doesn't work with your older media formats or workflows, the legacy QuickTime Player 7 may help.
- Make sure that you're using Mac OS X Snow Leopard v10.6.3 to OS X El Capitan v10.11.6.
- Download QuickTime Player 7, then double-click the downloaded file to open it.
- Double-click QuickTimePlayer7.6.6_SnowLeopard.pkg and follow the onscreen instructions. The installer puts QuickTime Player 7 in the Utilities folder of your Applications folder.
- If you have a QuickTime 7 Pro registration key, you can enter it now.
QuickTime Player (version 10) is part of QuickTime X, the modern version of QuickTime technology that has been built into OS X since Snow Leopard. Learn more about its features and capabilities.