Apple Final Cut Pro 5 - Manual (Page 1651)

300 Part IV Settings and Preferences
Effect Handling Tab
The Effect Handling tab allows you to assign real-time effects processing to third-party
video effects accelerator card or to Final Cut Pro (native software processing). Each
codec that appears here can be assigned to a different video effects accelerator card or
to Final Cut Pro. For more details, see Volume III, Chapter 23, “Using RT Extreme.”