The retime effect allows you to change the duration of a shot, either adding or discarding frames as necessary. A retime effect, being time-based, is treated slightly differently to other effects.
The retime Mode determines the accuracy of the retime calculation for the final output sequence. It can be set as :
|•||Bilinear Interpolate - more accurate|
The Scale determines a percentage retime speed.
Note that setting a scale to zero (0) lets you adjust a clip duration manually by stretching it using the cursor.
The Frame Pin determines which frame in the source stays constant for the output sequence.