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How to add custom transition on video: Hello I am trying to add transition b/w video clip using AVMutableVideoCompositionLayerInstruction i am able to add only simple transition and not able to add any complex transition like ripple, reveal and etc.Please guide me how to add complex transition b/w video clip.Code snippet for Simple Transition b/w Video Clips:AVMutableVideoCompositionLayerInstruction *fromLayer;AVMutableVideoCompositionLayerInstruction *toLayer;if (i+1 < [ClipPath count]) { // Add transition from clip i to clip i+1. AVMutableVideoCompositionInstruction *transitionInstruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction]; transitionInstruction.timeRange = transitionTimeRanges[i]; fromLayer = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:compositionVideoTracks[alternatingIndex]]; toLayer = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:compositionVideoTracks[1-alternatingIndex]]; if ([transitionType isEqualToString:@"Multi-Push"]) { if(i== 0){ [fromLayer setTransformRampFromStartTransform:CGAffineTransformIdentity toEndTransform:CGAffineTransformMakeTranslation(videoWidth, 0.0) timeRange:transitionInstruction.timeRange]; } else if (i == 1 ) { [fromLayer setTransformRampFromStartTransform:CGAffineTransformMakeTranslation(0, 0) toEndTransform:CGAffineTransformMakeTranslation(0,0 - videoHeight) timeRange:transitionInstruction.timeRange]; } else if (i == 2 ){ [fromLayer setTransformRampFromStartTransform:CGAffineTransformMakeTranslation(0, 0) toEndTransform:CGAffineTransformMakeTranslation(0,videoHeight) timeRange:transitionInstruction.timeRange]; } else{ [fromLayer setTransformRampFromStartTransform:CGAffineTransformMakeTranslation(0, 0) toEndTransform:CGAffineTransformMakeTranslation(0 - (videoWidth),0) timeRange:transitionInstruction.timeRange]; } }}Help in either Swift or Objective C Appreciated.Thank you in advance