如何从文件目录中播放视频

应用中存储视频的名字是'video2.MOV'，现在要播放出了问题。

因为无法从文件中获取。

-(void)playVideo:(NSTimer *)theTimer
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"video2.MOV"];
    NSLog(@"filePath - %@",filePath);

    NSString *content = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:NULL];
    NSLog(@"contentPath - %@",content);

    MPMoviePlayerViewController *videoPlayerView = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:content]];
    [ [CCDirector sharedDirector] presentMoviePlayerViewControllerAnimated:videoPlayerView];
    [videoPlayerView.moviePlayer play];
}

在控制台中，每次获取contentPath 都是null。