Seamless Loop Video - objective-c

Question

I have seen lots of examples to seamless loop a video in iOS, but I haven't found much that I can get working in MacOS. I am just experimenting with AVPlayer looping a video in a window. I can get the video to play and loop, but I can't get it to be seamless.
I have an example here that plays a 3 second video on loop and you can clearly see it isn't a seamless loop.
I know there is an AVPlayerLooper but I'm very new and I don't know how to implement that.
#import "AppDelegate.h"
#import "VideoWindow1.h"
#import <AVFoundation/AVFoundation.h>
#import <AVKit/AVKit.h>
#interface AppDelegate ()
#property (weak) IBOutlet AVPlayerView *playerView;
#property (weak) IBOutlet NSWindow *window;
#property (weak) IBOutlet NSWindow *VideoWindow;
#end
#implementation AppDelegate
AVPlayer *player;
BOOL loopPlayer;
- (void) movieEndDetected:(NSNotification *) note
{
if (loopPlayer) {
[player seekToTime:kCMTimeZero];
[player play];
}
}
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
loopPlayer = YES;
// set up player
NSBundle *mb = [NSBundle mainBundle];
NSURL *demoURL = [mb URLForResource:#"Video2" withExtension:#"mp4"];
player = [[AVPlayer alloc] initWithURL:demoURL];
self.playerView.player = player;
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc addObserver:self selector:#selector(movieEndDetected:)
name:#"AVPlayerItemDidPlayToEndTimeNotification"
object:player.currentItem];
[player play];
[_VideoWindow setAspectRatio:NSMakeSize(16, 9)];
}
- (void)applicationWillTerminate:(NSNotification *)aNotification {
// Insert code here to tear down your application
}
#end

Answer 1

I was able to get this to loop seamless with avlooper.
#import "VideoWindow.h"
#import <AVFoundation/AVFoundation.h>
#import <AVKit/AVKit.h>
#interface VideoWindow ()
#property (strong) IBOutlet AVPlayerView *playerView;
#property (strong) IBOutlet NSWindow *aspectView;
#end
#implementation VideoWindow
{
AVPlayerItem *_playerItem;
AVQueuePlayer *_player;
AVPlayerLooper *_playerLooper;
AVPlayerLayer *_playerLayer;
}
- (void)windowDidLoad {
[super windowDidLoad];
NSString *videoFile = [[NSBundle mainBundle] pathForResource:#"Video2" ofType:#"mp4"];
NSURL *videoURL = [NSURL fileURLWithPath:videoFile];
_playerItem = [AVPlayerItem playerItemWithURL:videoURL];
_player = [AVQueuePlayer queuePlayerWithItems:#[_playerItem]];
_playerLooper = [AVPlayerLooper playerLooperWithPlayer:_player templateItem:_playerItem];
_playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player];
_playerLayer.frame = self.playerView.bounds;
_playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
[self.playerView.layer addSublayer:_playerLayer];
[_aspectView setAspectRatio:NSMakeSize(16, 9)];
[_player play];
}
- (void)windowWillClose:(NSNotification *)aNotification {
[_player pause];
[_player seekToTime:kCMTimeZero];
}
#end