IOS AVPlayer won't play video

Thanks s1mon and matt for your help.

Here's the new code it might help someone:

- (void) viewDidAppear:(BOOL)animated
{
    avAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:filePath]];
    avPlayerItem =[[AVPlayerItem alloc]initWithAsset:avAsset];
    avPlayer = [[AVPlayer alloc]initWithPlayerItem:avPlayerItem];
    avPlayerLayer =[AVPlayerLayer playerLayerWithPlayer:avPlayer];
    [avPlayerLayer setFrame:self.view.frame];
    [self.view.layer addSublayer:avPlayerLayer];
    //[avPlayerLayer setBackgroundColor:[[UIColor redColor]CGColor]];
    [avPlayer seekToTime:kCMTimeZero];
    [avPlayer play];

}

Thank you.

This might not be the actual problem, but this code is certainly wrong:

[NSURL URLWithString:filePath]

First of all, try not to start with a file path; start with a file URL. That way, there is no conversion needed. But if you must perform a conversion from a file path to a URL, use fileURLWithPath:isDirectory:. A file URL is a special kind of animal and you must ask for one specifically when you are converting from a path.

I think you forgot to create an instance of AVPlayerItem in this line:

avPlayerItem =[avPlayerItem initWithAsset:avAsset];

This just sends initWithAsset: to avPlayerItem (which is probably nil when this method is called). Try changing it to instantiate an new AVPlayerItem which you can then assign to avPlayerItem, like this:

avPlayerItem = [[AVPlayerItem alloc] initWithAsset:avAsset];