AVPlayer does not show video - ios

Question

I am trying to play a movie at the beginning of my game. I am using AVPlayer to do this. My problem is, when I register a KVO to check the status of my AVPlayer, my game proceeds as usual without waiting for the video to load and finish. As a result, I can only hear the audio from my .mov file and can't see any video (since my game has already started).
I would like the video to load and finish before proceeding with the game.
Here's the code:
#interface RMVideoView : NSView
{
NSURL* _videoURL;
AVPlayer* _player;
AVPlayerLayer* _playerLayer;
}
#property (nonatomic, readonly, strong) AVPlayer* player;
#property (nonatomic, readonly, strong) AVPlayerLayer* playerLayer;
#property (nonatomic, retain) NSURL* videoURL;
- (void) play;
#end
static void *RMVideoViewPlayerLayerReadyForDisplay = &RMVideoViewPlayerLayerReadyForDisplay;
static void *RMVideoViewPlayerItemStatusContext = &RMVideoViewPlayerItemStatusContext;
#interface RMVideoView()
- (void)onError:(NSError*)error;
- (void)onReadyToPlay;
- (void)setUpPlaybackOfAsset:(AVAsset *)asset withKeys:(NSArray *)keys;
#end
#implementation RMVideoView
#synthesize player = _player;
#synthesize playerLayer = _playerLayer;
#synthesize videoURL = _videoURL;
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.wantsLayer = YES;
_player = [[AVPlayer alloc] init];
[self addObserver:self forKeyPath:#"player.currentItem.status" options:NSKeyValueObservingOptionNew context:RMVideoViewPlayerItemStatusContext];
}
return self;
}
- (void) setVideoURL:(NSURL *)videoURL {
_videoURL = videoURL;
[self.player pause];
[self.playerLayer removeFromSuperlayer];
AVURLAsset *asset = [AVAsset assetWithURL:self.videoURL];
[asset retain];
NSArray *assetKeysToLoadAndTest = [NSArray arrayWithObjects:#"playable", #"hasProtectedContent", #"tracks", #"duration", nil];
[asset loadValuesAsynchronouslyForKeys:assetKeysToLoadAndTest completionHandler:^{
dispatch_async(dispatch_get_main_queue(),^{
[self setUpPlaybackOfAsset:asset withKeys:assetKeysToLoadAndTest];
});
}];
}
#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (context == RMVideoViewPlayerItemStatusContext)
{
AVPlayerStatus status = [[change objectForKey:NSKeyValueChangeNewKey] integerValue];
switch (status)
{
case AVPlayerItemStatusUnknown:
break;
case AVPlayerItemStatusReadyToPlay:
[self onReadyToPlay];
break;
case AVPlayerItemStatusFailed:
[self onError:nil];
break;
}
}
else if (context == RMVideoViewPlayerLayerReadyForDisplay)
{
if ([[change objectForKey:NSKeyValueChangeNewKey] boolValue])
{
self.playerLayer.hidden = NO;
}
}
else
{
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#pragma mark - Private
- (void)onError:(NSError*)error {
// Notify delegate
}
- (void)onReadyToPlay {
// Notify delegate
[self.player play];
}
- (void)setUpPlaybackOfAsset:(AVAsset *)asset withKeys:(NSArray *)keys {
for (NSString *key in keys) {
NSError *error = nil;
if ([asset statusOfValueForKey:key error:&error] == AVKeyValueStatusFailed) {
[self onError:error];
return;
}
}
if (!asset.isPlayable || asset.hasProtectedContent) {
[self onError:nil];
return;
}
if ([[asset tracksWithMediaType:AVMediaTypeVideo] count] != 0)
{ // Asset has video tracks
_playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
self.playerLayer.frame = self.layer.bounds;
self.playerLayer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;
self.playerLayer.hidden = NO;
[self.layer addSublayer:self.playerLayer];
[self addObserver:self forKeyPath:#"playerLayer.readyForDisplay" options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew context:RMVideoViewPlayerLayerReadyForDisplay];
}
// Create a new AVPlayerItem and make it our player's current item.
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset];
[self.player replaceCurrentItemWithPlayerItem:playerItem];
}
#pragma mark - Public
- (void) play {
[self.player play];
}
#end
I am calling the above code from my entry function's -(void)drawView method this way:
-(void)drawView
{
if(playVideo)
{
RMVideoView *rmVid = [[RMVideoView alloc]init];
NSURL* MovieURL;
NSBundle *bundle = [NSBundle mainBundle];
if(bundle != nil)
{
NSString *moviePath = [bundle pathForResource:#"MyVideoResource" ofType:#"mov"];
if (moviePath)
{
MovieURL = [NSURL fileURLWithPath:moviePath];
[MovieURL retain];
[rmVid setVideoURL:MovieURL];
}
}
playVideo = kFalse;
}
}
The call made to [rmVid setVideoURL:MovieURL] returns when KVO is setup and the game runs forward.
Please help!

Answer 1

You can listen for a notification, when the video playback reaches the end like this:
AVPlayerItem *avPlayerItem =[[AVPlayerItem alloc]initWithAsset:avAsset];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(playerItemDidReachedEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:avPlayerItem];