Subtitles of the Movie

Next is the Ping Pong Behavior. From the In point of this behavior Motion counts the number of frames in the Duration field and then plays it backward and forward again and again until it reaches the end of the behavior, or plays forward when the last captured frame of the behavior regardless of the actual Source frame. A number of the behaviors act like this so that you have seamless playback from the end of the behavior forward. Next is the Replay Behavior which jumps the Playhead to a specific frame set in the Inspector and then plays it forward from there. It does not loop the footage, it just jumps to a frame and plays forward from there. The Out point of this behavior is also disregarded in favor of continuous and seamless playback. Next is the Reverse Behavior. I won't play this one yet. This is a simple behavior that reverses playback of Source footage but it uses an odd method of doing it. This behavior has no parameters so it doesn't let you set when the reverse playback begins via the Inspector and has no Duration fields. Instead, the behavior's tracks In and Out points are used. The In point turns on the Reverse Playback but the frame that it starts from is set by the Track's Out point, so currently parked over the In point, but as I drag the Out point of the track the frame changes. So, in this case the behavior's Track length is very important because that's the only control you have over this behavior. Next is Scrub. Let's play that. By itself the Scrub Behavior doesn't do anything different from a Hold Frame Behavior. Now I have another behavior that's actually controlling this behavior. The Frame Offset parameter is being controlled by this Oscillate Behavior. I'll turn that on and now you see its Icon turned On in the Scrub Behavior and we'll play the scene. You could, of course, set keyframes with the Frame Offset parameter, but using another behavior to control the Offset is a very elegant technique of controlling the playback of the footage as if you were scrubbing it forward and backward. At the end of the behavior the playback reverts back to normal sync of the Source footage to the Timeline. I really like the Set Speed Behavior. Beside the Speed Controls like you can set in the Properties tab, this behavior adds the ability to smoothly ramp in and out of the speed you set, like this. Very cool. At the end of the behavior Motion plays forward from the last captured frame of the behavior regardless of the actual Source frame. The Scrub Behavior is very much like the Quantize Parameter Behavior. It holds frames for longer than 1 frame per frame, so it gives you a jerky, stepped effect. The longer the Duration value the longer the steps. Let me stop it. Notice as I toggle the behavior on and off the frame it chose to catch and hold is basically in sync with the normal playback, thereabouts. So the Scrub Behavior is holding a frame, then it ignores subsequent frames counting forward for the duration of the whole, then it grabs another frame and holds that one and so on. It's basically changing the Frame Rate. At the end of the behavior the clip plays back normally. The last Retiming Behavior is Stutter. I'll play it. This behavior catches and holds frames like a piece of film caught in a projector. The Stutter Amount parameter is the frequency, or likelihood, that a stutter will occur. The Duration value sets how long the stutter will be. Basically, these stutters are hold frames that make footage play back in a skipping fashion. The Random Seed button lets you regenerate what frames Motion is choosing to pick and hold. At the end of the behavior Motion plays forward from the last captured frame of the behavior regardless of the actual Source frame. Motion provides many ways to retime your footage. The Retiming Behaviors are there for some common tasks so that you can retime your footage quickly. For more precise control you'd probably use Variable Speed Keyframing.