ProApps QuickTime Codecs
This update adds the following video codecs for use by QuickTime-based applications:
- Apple Intermediate Codec
- Apple ProRes
- AVC-Intra
- DVCPRO HD
- HDV
- XDCAM HD / EX / HD422
- MPEG IMX
- Uncompressed 4:2:2
This update is recommended for all users of Final Cut Pro X, Motion 5, or Compressor 4.
Read more http://support.apple.com/kb/DL1396