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Timewarp Node

Timewarps allows you to alter clips by modifying their speed and direction. Use the Timewarp node to change the speed and timing of clips, reverse clips and blend frames. The Timewarp node accepts front and matte clip inputs, and outputs result and matte clips.

Timewarp Node Settings

The following are the Timewarp node settings for the range, timewarp and blending options. The blending options settings change depending on whether Mix, Trails or Motion is selected.

Range Settings

Range from field
  This field displays the beginning of the range of frames that will be impacted by the time warp effect.
Range to field
  This field displays the end of the range of frames that will be impacted by the time warp effect.
Range before button
  Enable this button to select between Repeat First, No Media, Use Black, and Use White. Applied before the set frame range.
Range after button
  Enable this button to select between Repeat First, No Media, Use Black, and Use White. Applied after the set frame range.

Timewarp Settings

Timewarp button
  Select between timing and speed. Timing selects the source frame to display at the current frame. Speed displays the timewarp speed.
Timewarp timing/speed field
  When the Timewarp button is set to speed, this field displays the timewarp speed. When the Timewarp button is set to timing, this field displays the timewarp timing.
Reverse button (not shown)
  Enable this button to reverse the direction of the clips. This button is only available when speed is selected from the Timewarp button.

Frame Interpolation Settings

Frame Interpolation type button
  Select an option for blending frames with the timewarp

Frame Interpolation sample button
  Select whether the speed of the timewarp will be set in relation to the speed at the beginning, middle or end of the timing curve for each frame or field.

Frame Interpolation amount field (Mix)
  This field displays the mix value for the timewarp. Each result frame is a blend of an equal number of frames from both sides of the given frame.

NoteThe Frame Interpolation settings for Trails and Motion are not shown in the image above.

Frame Interpolation Pre amount field (Trails)
  This field displays the value to mix the frames that follow the current frame with the current frame.

Frame Interpolation Pre weight field (Trails)
  This field displays the fall-off value for the pretrail. When the value is 0%, the image in the current frame is at 100% intensity and the first image in the trail is at 0% intensity. When the value is at 100%, there is no fall-off.

Frame Interpolation Post amount field (Trails)
  This field displays the value to mix the frames that proceeds the current frame with the current frame.

Frame Interpolation Post weight field (Trails)
  This field displays the fall-off value for the posttrail. When the value is 0%, the image in the current frame is at 100% intensity and the first image in the trail is at 0% intensity. When the value is at 100%, there is no fall-off.

Frame Interpolation Motion Analysis button (Motion)
  Use this button to select the level of motion analysis accuracy and processing speed. Select Use Full Resolution to process the images at the current resolution. This button is disabled when external input is attached to the node's forward flow and backward flow tabs.

Frame Interpolation motion blur active button (Motion)
  Enable this button to apply a motion blur to the selected clip.

Frame Interpolation motion blur samples field (Motion)
  This field displays the number of frames to sample when creating the time warp. The samples include the current frame, and an equal distribution of past and future frames.

Frame Interpolation motion blur shutter field (Motion)
  This field displays the number of frames for which the shutter stays open. For example, when the shutter value is set to 3, every third frame is as a sample.

Frame Interpolation reference button (Motion)
  Enable this button to apply the time warp only to objects that do not have the same relative motion as the selected pixel. When enabled, you can edit values in the X and Y fields.

Frame Interpolation reference color pot (Motion)
  Displays the color of the crosshair that marks the reference point.

Frame Interpolation reference X field (Motion)
  Displays the horizontal position of the pixel to use as a reference point at the selected frame.
Frame Interpolation reference Y field (Motion)
  Displays the vertical position of the pixel to use as a reference point at the selected frame.