两种视频播放形式和 视频截图

#import "ViewController.h"

#import <MediaPlayer/MediaPlayer.h>

#import <AVFoundation/AVFoundation.h>

@interface ViewController ()

@property(nonatomic,weak)UIImageView *image;

@property(nonatomic,strong)MPMoviePlayerController*controll;

@property(nonatomic,weak) UIView *avView;

@property(nonatomic,strong)AVAssetImageGenerator*gener;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

UIButton *btn=[[UIButton alloc]init];

[btn setTitle:@"model出视频控制器" forState:UIControlStateNormal];

btn.backgroundColor=[UIColor grayColor];

btn.frame=CGRectMake(10, 50, 150, 50);

[self.view addSubview:btn];

[btn addTarget:self action:@selector(btnModelController) forControlEvents:UIControlEventTouchUpInside];

UIButton *btn1=[[UIButton alloc]init];

[btn1 setTitle:@"视图上显示视频" forState:UIControlStateNormal];

btn1.backgroundColor=[UIColor grayColor];

btn1.frame=CGRectMake(200, 50, 150, 50);

[self.view addSubview:btn1];

[btn1 addTarget:self action:@selector(btnShowInCurrentController) forControlEvents:UIControlEventTouchUpInside];

UIButton *btn2=[[UIButton alloc]init];

[btn2 setTitle:@"点击截图" forState:UIControlStateNormal];

btn2.backgroundColor=[UIColor grayColor];

btn2.frame=CGRectMake(self.view.bounds.size.width/2+20, 110, 100,100);

[self.view addSubview:btn2];

[btn2 addTarget:self action:@selector(cutImage) forControlEvents:UIControlEventTouchUpInside];

UIImageView *image=[[UIImageView alloc]init];

image.frame=CGRectMake(0, 110, self.view.bounds.size.width/2, self.view.bounds.size.width/2);

[self.view addSubview:image];

image.backgroundColor=[UIColor grayColor];

self.image=image;

UIView *avView=[[UIView alloc]init];

avView.frame=CGRectMake(0, 110+ self.view.bounds.size.width/2,self.view.bounds.size.width ,self.view.bounds.size.height-110-self.view.bounds.size.width/2);

avView.backgroundColor=[UIColor greenColor];

[self.view addSubview:avView];

self.avView=avView;

}

//model出来的控制器

-(void)btnModelController

{

NSURL *url=[NSURL fileURLWithPath: [[NSBundle mainBundle]pathForResource:@"Alizee_La_Isla_Bonita.mp4" ofType:nil]];

MPMoviePlayerViewController *vc=[[MPMoviePlayerViewController alloc]initWithContentURL:url];

[self presentViewController:vc animated:YES completion:nil];

}

-(void)btnShowInCurrentController

{

NSURL *url=[NSURL fileURLWithPath: [[NSBundle mainBundle]pathForResource:@"Alizee_La_Isla_Bonita.mp4" ofType:nil]];

self.controll=[[MPMoviePlayerController alloc]initWithContentURL:url];

[self.avView addSubview:self.controll.view];

self.controll.view.frame=self.avView.bounds;

//播放

[self.controll play];

}

//截图视频中某一时刻的图片

-(void)cutImage

{

NSURL *url=[NSURL fileURLWithPath: [[NSBundle mainBundle]pathForResource:@"Alizee_La_Isla_Bonita.mp4" ofType:nil]];

//获取资源

AVAsset *asset=[AVAsset assetWithURL:url];

//建立图片生成器

AVAssetImageGenerator*gener=[[AVAssetImageGenerator alloc]initWithAsset:asset];

self.gener=gener;

//获取此刻播放进度

NSTimeInterval time= [self.controll currentPlaybackTime];

CMTime cTime=CMTimeMake(time, 1.0);

NSValue *value=[NSValue valueWithCMTime:cTime];

//截图

[gener generateCGImagesAsynchronouslyForTimes:@[value] completionHandler:^(CMTime requestedTime, CGImageRef images, CMTime actualTime, AVAssetImageGeneratorResult result, NSError *error) {

//添加到主队列有问题,主线程没问题

dispatch_async(dispatch_get_main_queue(), ^{

UIImage *needImage=[UIImage imageWithCGImage:images];

[self.image setImage:needImage];

});

}];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

}

@end