Set the following preferences for working with timewarps.
(a) Timewarp Render Mode box (b) Interpolation option box (c) Timewarp Sample box
Select: | To: |
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No Interpolation | Create a timewarp with no field interpolation. |
Half Interpolation | Create a timewarp in which interpolation only takes place on displaced fields. |
Full Interpolation | Create a timewarp in which all fields are interpolated. Note that this option has the least aliasing, but you may notice some softening of the image due to the blending of the fields. |
Shift Field Up | Shift the image up by a single line. This may help reduce artifacts that appear in reverse timewarps of 100%. |
Shift Field Down | Shift the image down by a single line. This may help reduce artifacts that appear in reverse timewarps of 100%. |
Select: | To sample the timewarp: |
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Sample Start | At the start of the frame. |
Sample Middle | (Default) At the middle of the first frame. Generally, you should use this setting. Depending on the timewarp speed and how other editing systems create timewarps, you may need to change the sampling to fit what was done elsewhere. |
Sample End | At the end of the frame. |
Enable Auto Timewarp if you want to timewarp the inserted frames from the source clip. The actual frames between the in and out points on the source clip are used. See Working with Implicit Timewarps in Batch.
Disable Auto Timewarp if you want excess source clip frames to be added to the edit as tail frames. The source clip selection begins at the in point, but if the length of the source selection exceeds the record selection, excess frames at the end of the source selection are not used. Instead, the excess frames are added as tail frames. If the length of the source selection is less than the record selection, the source selection overwrites the equivalent number of frames in the record clip. Essentially, a four-point edit is treated as a three-point edit.
Auto Timewarp is enabled by default.