Purpose
A trimmed file copy is for quickly extracting a region on safe random-access boundaries. It does not promise that arbitrary Mark In/Out positions will become exact displayed-frame boundaries, because it avoids video encoding.
Create the copy
- Mark the approximate source range.
- Choose Create Trimmed File Copy.
- Select a compatible destination container.
- Review the adjusted start/end information before processing.
When to use Intelligent instead
Use a normal Intelligent smart-render export when the exact first or last frame matters. That mode can encode boundary pictures while still copying safe interior GOPs.