Skeleton to create a looping video view.

LoopingVideoViewSkeleton

#import "MyViewController.h"
#import <AVFoundation/AVFoundation.h>

@interface MyViewController ()
@property (strong, nonatomic) IBOutlet UIView *movieView;
@property (strong, nonatomic) AVPlayer *player;
@end

@implementation MyViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self setupPlayer];
}

- (void)setupPlayer
{
    AVPlayerLayer *playerLayer;
    NSURL *url;
    
    url = [[NSBundle mainBundle] URLForResource:@"video" withExtension:@"mp4"];
    playerLayer = [AVPlayerLayer layer];
    self.player = [AVPlayer playerWithURL:url];
    playerLayer.player = self.player;
    playerLayer.frame = self.movieView.bounds;
    [self.movieView.layer addSublayer:playerLayer];
    [self.player play];
    [self.player addObserver:self forKeyPath:@"rate" options:NSKeyValueObservingOptionNew context:nil];
}

- (void)dealloc
{
    [self.player removeObserver:self forKeyPath:@"rate"];
}

#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    if((object == self.player) && (self.player.rate == 0))
    {
        [self.player seekToTime:kCMTimeZero completionHandler:^(BOOL finished) {
            [self.player play];
        }];
    }
}
@end