iOS AVPlayer play a lot videos and cause memory too high - ios

Question

First of all, thank you for your help.
The Questions:
1.I need to test a lot videos.I wrote two methods to test videos.
2.When playing a video status change, and I set avPlayer = nil and avPlayerItem = nil, i also add the #autoreleasepool {}, but the memory is slowly increased, I used the instruments but I did not find memory leaks, I find a lot questions and did not find a solution.
3.Here is my code：
-(void)CheckVideoURlCanPlay{
#autoreleasepool {
VideoPlayDataObj *videoPlay = [self.needCheckArr objectAtIndex:0];
NSString *str = videoPlay.videoURL;
NSURL *url = [NSURL URLWithString:str];
self.playItem = [AVPlayerItem playerItemWithURL:url];
self.player = [AVPlayer playerWithPlayerItem:self.playItem];
self.playLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
self.playLayer.videoGravity = AVLayerVideoGravityResizeAspect;
self.playLayer.frame=CGRectMake(100, 80, 100, 100);
[self.view.layer addSublayer:self.playLayer];
[self.player play];
[self.playItem addObserver:self forKeyPath:#"status" options:NSKeyValueObservingOptionNew context:nil];
}}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context{
#autoreleasepool {
if ([keyPath isEqualToString:#"status"]) {
if (self.player.currentItem.status == AVPlayerItemStatusReadyToPlay) {
#autoreleasepool {
[self.player.currentItem.asset cancelLoading];
[self.player.currentItem cancelPendingSeeks];
[self.player cancelPendingPrerolls];
[self.playItem removeObserver:self forKeyPath:#"status"];
self.playItem = nil;
self.player = nil;
}
[self.needCheckArr removeObjectAtIndex:0];
[NSThread sleepForTimeInterval:5];
[self CheckVideoURlCanPlay];
}
}
}
}
4.I also tried to relieve the current view, but it does not relieve all. If you play a large number of video memory will be high, the final app will be killed.
5.I wonder if after loading a video, it will produce dirty memory?
this my app start memory:13M
this test some videos and i pop the view :
enter image description here
this test some videos again and pop the view :
enter image description here
6.Finally, I hope you can help me, thank you very much.

Answer 1

It does not look like you are ever removing the AVPlayerLayer from the view:
[self.playerLayer removeFromSuperlayer];
Also I cannot see the point of #autoreleasepool here, especially if you have ARC turned on (which you almost certainly do!). #autoreleasepool is usually only useful when you have ARC turned off, or when you are churning through a lot of memory (as in, many megabytes) in a single main-loop invocation and need to control when they get cleaned up.