MediaCentral | UX User’s Guide : Working with Video Media : Playing Assets : Using the J-K-L Keys for Playback
Using the J-K-L Keys for Playback
 
The J-K-L keys on the keyboard allow you to play and shuttle through media at varying speeds. This feature, also referred to as three-button play or variable-speed play, allows you to use three fingers to manipulate the speed of playback for greater control.
The playback speed is displayed in the upper right corner of the Media viewer. For backward play, the display includes a left-pointing arrow. For forward play, the display includes a right-pointing arrow.
You can use the J-K-L keys with focus in the Media pane or in the Sequence pane.
*Your ability to use the J-K-L keys when playing Interplay MAM assets depends on Interplay MAM rules. The credentials you use to sign in to the Interplay MAM database determine if you are allowed to change the playback speed.
*You cannot use the J-K-L keys with file-based playback. See Selecting Frame-Based Playback or File-Based Playback.
To play or shuttle through the media using the J-K-L keys on the keyboard:
*Press the L key to move forward through the footage at normal speed.
*Press the L key multiple times to move forward through the footage at faster speeds, as described in the following table:
 
Press the L Key
To Play Media At
2 times
2x normal speed
3 times
3x normal speed
4 times
4x normal speed
*An administrator can change the speed associated with the number of key presses. For more information, see MediaCentral System Settings.
*Press the J key to move backward at the same shuttle speed increments.
*Press the K key to stop playback.
*Press the K and L keys together for slow forward at ¼ times normal speed.
*Press the K and J keys together for slow backward at ¼ times normal speed.
*Press and hold the K key and tap the L key or the J key to step through footage one frame at a time.
To slow or change play direction one speed at a time:
*Press Alt (Windows) or Option (Macintosh) while you tap the J or L key.
Play slows or changes direction one speed at a time from the speed at which you are currently playing.
For example, you are shuttling backward with the J key at 2x normal speed. Press and hold Alt and tap the L key once. Play slows to backward at normal speed (1x speed). Hold Alt and tap L once again. Play stops. Continue to hold Alt and tap L once again. Play goes forward at normal speed.