I want to process a video with the chromakey filter and the output should be reproduced on the screen.
Below the code I developed that is not showing any video and I can't understand why:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let aSelector : Selector = "start:"
let tapGesture = UITapGestureRecognizer(target: self, action: aSelector)
tapGesture.numberOfTapsRequired = 1
view.addGestureRecognizer(tapGesture)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func start(sender: AnyObject) {
NSLog("tap pressed")
play()
}
func play(){
let path = NSBundle.mainBundle().pathForResource("glass_buster", ofType: "mp4")
let player = AVPlayer()
let pathURL = NSURL.fileURLWithPath(path!)
NSLog(pathURL.absoluteString)
let playerItem = AVPlayerItem(URL: pathURL)
player.replaceCurrentItemWithPlayerItem(playerItem)
let gpuMovie = GPUImageMovie(playerItem: playerItem)
gpuMovie.playAtActualSpeed = true
let filter = GPUImageChromaKeyFilter()
gpuMovie.addTarget(filter)
gpuMovie.playAtActualSpeed = true
gpuMovie.startProcessing()
player.play()
}
You also need a GPUImageView which displays the movie and you cannot store the player in a local var. Try the following:
var player: AVPlayer! = nil
var playerItem : AVPlayerItem! = nil
func play() {
let path = NSBundle.mainBundle().pathForResource("glass_buster", ofType: "mp4")
player = AVPlayer()
let pathURL = NSURL.fileURLWithPath(path!)
playerItem = AVPlayerItem(URL: pathURL)
player.replaceCurrentItemWithPlayerItem(playerItem)
let gpuMovie = GPUImageMovie(playerItem: playerItem)
gpuMovie.playAtActualSpeed = true
let filteredView: GPUImageView = GPUImageView();
filteredView.frame = self.view.frame
self.view.addSubview(filteredView)
let filter = GPUImageChromaKeyFilter()
gpuMovie.addTarget(filter)
gpuMovie.playAtActualSpeed = true
filter.addTarget(filteredView)
gpuMovie.startProcessing()
player.play()
}
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