Get Final Cut Pro HD.

Check here for the latest updates to Final Cut Pro HD and its suite of applications: Cinema Tools, Compressor, LiveType, and Soundtrack. Final Cut Pro HD (version 4.5) is highly recommended for all Final Cut Pro 4 users.

Requirements for Final Cut Pro HD

Mac OS X 10.3.2 or later (Mac OS X 10.2 “Jaguar” users should use Final Cut Pro 4.1 update)
QuickTime 6.5 or later
Final Cut Pro 4
Valid Final Cut Pro 4 serial number

To Download Updates:

Sign in with your Apple ID.
Enter your Final Cut Pro 4 serial number, then click the “Download Update” button to begin download.
After you have initiated the download of Final Cut Pro HD, a page will appear which allows you to download the other application updates.

Expanded HD Support

Native DVCPRO HD support allows capturing, editing, and output in the same HD format without recompression.
Input and output 4:2:2 YUV broadcast-quality HD via FireWire in a 100 Mbps stream.
High-performance HD editing with native support for DVCPRO HD 720p (24 and 60 fps) and 1080i (30 fps).
Additional 720p HD format support lets you work with more cameras and decks.
RT Extreme for HD allows for real-time multi-stream effects and transitions for HD formats.
Digital Cinema Desktop allows for real-time HD previewing via DVI to an Apple Cinema Display.
Support for 24 @ 25 PAL editing.

Workflow Enhancements

Deep integration with Apple’s revolutionary Motion speeds up the creative process by eliminating intermediate render files and unnecessary import/export steps.
Use Motion projects directly in the Final Cut Pro HD Timeline and see instant updates as changes are saved in Motion. This integration also works for LiveType.
Playback using the JKL keys when using an external monitor.
Render and display color bars for 23.98 fps projects.