Supported Real-Time Playback Codecs
RT Extreme is not capable of playing back all video codecs. The processor speed and
amount of RAM installed in your computer affect which codecs can play back in real
time. The following codecs are supported for real-time playback:
 DV, DVCAM, DVCPRO (25), and DVCPRO 50
 IMX
 OfflineRT (this is a Final Cut Pro preset that uses the Photo JPEG codec)
 8- and 10-bit uncompressed 4:2:2 video formats
 Apple ProRes 422 codec (standard definition)
The following high definition codecs have higher system requirements:
 DVCPRO HD, XDCAM HD, HDV, Apple Intermediate Codec, and Apple ProRes 422 codec
To see a complete list of real-time codecs supported by your system:
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Choose Final Cut Pro > System Settings, then click the Effect Handling tab.