Global. For more information, see Global and Keyframeable Parameters.

Allows you to create and customize variable speed or strobe motion clips based on all or part of the clip currently displayed in the Source pop-up monitor.

Variable Speed and Strobe Motion parameters are available in the Motion Effect dialog box. To open the Motion Effect dialog box, click the Motion Effect button in the Source pop-up monitor.

The duration of the effect in frames. Doubling the number of frames causes the frame rate to be half the current rate.

The rate of speed in frames per second (fps) at which the video will be played. Normal speed is 30 fps for NTSC, 25 fps for PAL.

The percent of speed at which the video will be played. Normal speed is 100%.

Sets the Variable Speed parameters, so the duration of the motion effect will match the IN to OUT duration marked in the sequence.

Specifies the update rate in frames for the Strobe Motion effect. For example, entering a rate of 5 causes every fifth frame to be displayed in the Strobe Motion effect.

The Avid editing application uses a single field to create the effect.

For two-field media, this reduces the information stored by half because it drops one field of the image, resulting in a lower quality image.

For single-field media, this is usually the best choice because of its speed (the other options do not improve effect quality for single-field media).

Effects render in the shortest amount of time using this option.

The Avid editing application uses both fields to create the effect. For example, the first two frames of a half-speed (50%) slow-motion effect repeat the original Frame 1 (both fields) twice.

This option is good for shots without inter-field motion and still shots.

With footage that includes inter-field motion, this method might result in minor shifting or bumping of the image because it disturbs the original order of fields: a Field 1 will appear both before and after the corresponding Field 2.

Effects render relatively quickly. For best results, use evenly divisible frame rates with this option.

The Avid editing application creates a second field for the effect by combining scan line pairs from the first field in the original media.

This option calculates the motion effect at the field level rather than the frame level. Because the Avid editing application considers all fields and does not disturb the original order of fields, the smoothest effect results.

Effects created using this option take the longest amount of time to render.

The Avid editing application creates a second field for the effect by shifting selected video fields of the original media by a full scan line. This technique is similar to that used by high-quality professional video decks when playing footage at less than normal speed.

This option also creates the motion effect at the field level rather than the frame level; however, because pixels are not filtered, the final image is sharper than that created by the Interpolated Field option. The image might display some slight jitter at certain speeds.

The time needed to render effects created with this option is longer than the time for effects created using either Duplicated Field or Both Fields but similar to the time needed for Interpolated Field.

If a specific motion effect type is set in the Motion Effects Render Using option of the active Render setting, the Avid editing application automatically selects that motion effect type, makes all other motion effect type options unavailable, and displays the Ignore Render Setting check box. Click the Ignore Render Setting check box to temporarily override the active Render setting and make all four motion effect types available.