CODEWITHSUNDEEP
iosobjective-cswiftvideocabasicanimation
bpa
bpa

Reputation: 183

CALayer position animation on video layer

In this tutorial I have found how to make an animation CALayer in video: http://www.raywenderlich.com/30200/avfoundation-tutorial-adding-overlays-and-animations-to-videos

CABasicAnimation *animation
=[CABasicAnimation animationWithKeyPath:@"opacity"];
animation.duration=3.0;
animation.repeatCount=5;
animation.autoreverses=YES;
// animate from fully visible to invisible
animation.fromValue=[NSNumber numberWithFloat:1.0];
animation.toValue=[NSNumber numberWithFloat:0.0];
animation.beginTime = AVCoreAnimationBeginTimeAtZero;
[overlayLayer1 addAnimation:animation forKey:@"animateOpacity"];

But it does not work when I want to animate the movement of CALayer:

animation.keyPath = @"position.x";

or

animation.keyPath = @"position.y";

Is it possible to animate the movement of the CALayer?

Upvotes: 1

Views: 1377

Answers (2)

bpa
bpa

Reputation: 183

Any animations will be interpreted on the video's timeline, not real-time, so you should:

  1. Set animations’ beginTime property to AVCoreAnimationBeginTimeAtZero rather than 0 (which CoreAnimation replaces with CACurrentMediaTime);

  2. Set removedOnCompletion to NO on animations so they are not automatically removed;

Upvotes: 2

Kujey
Kujey

Reputation: 1122

Try using this keypath : 

animation.keyPath = @"transform.translation.x";

Upvotes: 0

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