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28 Chapter 1 Working with HDV
Creating Render Files Using the Apple ProRes 422 Codec
To improve rendering performance while editing, you can render segments of your
native HDV, XDCAM HD, and XDCAM EX sequences using the Apple ProRes 422 codec.
Because Final Cut Pro supports mixed-format sequences, you can play back the entire
sequence, including the Apple ProRes 422 codec render files, in real time.
Conforming While Rendering in the Timeline
If you choose to use native HDV render files while you edit, your render files can be
conformed when they are rendered. You can generate properly conformed render files
for your sequence by enabling all options in the Render All, Render Selection, and
Render Only submenus of the Sequence menu.
For example, if you enable rendering for all render status categories in the Render
Selection submenu and then choose Sequence > Render Selection > Video, the render
files created for selected video items in the Timeline are conformed with proper GOP
structures. When you output to tape or export using the Export QuickTime Movie
command, these render files are already properly conformed, reducing the time
required for final rendering and conforming.
∏ Tip: You can disable conforming during rendering in the Timeline by deselecting one or
more render status categories in the appropriate Render submenu of the Sequence menu.
Using the Print to Video Command to Output HDV
You can only output HDV footage to tape using the Print to Video command. The Edit
to Tape command is not supported for HDV media.
To prepare for output, any effects in your HDV sequence need to be rendered, and then
the sequence must be conformed to create a proper MPEG-2 output stream. These
steps happen automatically when you begin a Print to Video operation.
During a Print to Video operation, Final Cut Pro renders and conforms video in a single
pass, storing properly conformed media within your sequence’s render files. As a result,
subsequent Print to Video operations don’t need to conform the video unless you make
changes to your sequence. However, leader and trailer elements, as well as gaps in your
sequence, are rendered and conformed each time you use the Print to Video command.