Create a walk cycle with Progressive Looping

You can use the Progressive Looping function in the Time Editor to create cyclical animation with a single clip. When you add an animation clip to the Time Editor, it will automatically interpret animation clips that have potential for a progressive animation cycle as a default when you use Loop. However, you can always set this option manually in the Clip Loop Before/After menu in the Attribute Editor.

Animation loop created from Content Browser files (RobotHumanoid.ma and walk1.ma)

To create a walk cycle from an animation clip

1. Import an animation clip into the Time Editor.
   Tip: Make sure that the start and the end frame of the clip are as similar as possible to create the smoothest possible transition.
2. Select the clip on the track.
3. In the Attribute Editor, check that Clip Loop Before and Clip Loop After Modes are set to Progressive. See Loop types in the Time Editor for a description of Loop modes.
   Note: The Time Editor automatically detects clips that have the potential to be a walk cycle and this option should be already be set.
4. Click the Loop icon on the Time Editor toolbar.
5. Drag the beginning or end of the animation clip. The cursor changes to show you are in Looping mode.
   
6. Play or scrub your animation.

Note: Tweak your walk cycle in the Graph Editor.