Sync and Video : Working with Synchronization : The Spot Dialog : Use Subframes Option

Use Subframes Option
A subframe is 1/100th of a frame. The Use Subframes option enables you to use these smaller units for greater accuracy. This command adds an additional time field in the SMPTE hours:minutes:seconds:frames box, which appears as the far right time field when enabled. Use a Period (.) to separate subframe values from whole frames.
 
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