iOS: ios视频播放（MPMediaPlayerController，AVPlayer，AVPlayerViewcontroller、ffmpeg-AVPlayer）...-白红宇

iOS: ios视频播放（MPMediaPlayerController，AVPlayer，AVPlayerViewcontroller、ffmpeg-AVPlayer）...

阅读量：5965 次

发布时间：2019-06-19

本文共 7792 字，大约阅读时间需要 25 分钟。

介绍：

和音频播放一样，ios也提供个很多的API。如mediaPlayer.framework下的MPMediaPlayerController、AVFounditon.framework下的AVPlayer和AVKit下的AVPlayerViewcontroller。MPMovieplayerController已经在ios9.0中被废弃了，用来替代的是AVPlayerViewcontroller。尽管如此，但还是说一下比较熟悉的MPMovieplayerController.

1、MPMovieplayerController

<1>初始化MPMovieplayerController

// 创建本地URL（也可创建基于网络的URL)NSURL* movieUrl = [[NSBundlemainBundle]URLForResource:@"movie"withExtension:@"mp4"];// 使用指定URL创建MPMoviePlayerController// MPMoviePlayerController将会播放该URL对应的视频MPMoviePlayerController *moviePlayer = [[MPMoviePlayerControlleralloc]initWithContentURL:movieUrl];

<2>设置属性并添加到当前控制器的View上

// 设置该播放器的控制条风格。moviePlayer.controlStyle =MPMovieControlStyleEmbedded;// 设置该播放器的缩放模式moviePlayer.scalingMode =MPMovieScalingModeAspectFit;//设置播放视图大小 _movieplayer.view.frame = self.view.bounds;//设置播放视图宽高自适应调整_movieplayer.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

//添加到当前控制器的View上[self.View  addSubview:moviePlayer.view];

<3>播放选择

//播放缓冲[self.movieplayer prepareToPlay];//播放开始[moviePlayer play];//播放暂停[moviePlayer pause];//播放停止[moviePlayer stop];

由于属性太多，这里只列出能完成简单的播放器的属性，其他属性可在头文件中查找，注意：播放的状态的监听和截图功能都是通过通知实现的。

这里给一个具体的代码：

ViewController类

#import "ViewController.h"#import "PlayViewController.h"@interface ViewController ()
      
       @property (weak, nonatomic) IBOutlet UIImageView *imageView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        self.navigationItem.title = @"播放器";}-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{        PlayViewController *playContronller = segue.destinationViewController;    playContronller.delegate = self;}#pragma mark 
       
        -(void)dismissPlayViewController{        [self dismissViewControllerAnimated:self completion:nil];}-(void)setImageWithThumbnailImage:(UIImage *)image{        self.imageView.image = image;}@end

View Code

PlayViewController类

#import 
      
       @protocol PlayViewControllerDelegate 
       
        //关闭模态窗体-(void)dismissPlayViewController;//设置截图-(void)setImageWithThumbnailImage:(UIImage *)image;@end@interface PlayViewController : UIViewController@property (assign,nonatomic)id
        
          delegate;@end

View Code

#import "PlayViewController.h"#import 
      
       #import 
       
        @interface PlayViewController ()@property (strong,nonatomic)MPMoviePlayerController *movieplayer;@end@implementation PlayViewController/** 创建视频播放器 */-(MPMoviePlayerController *)movieplayer{        if (!_movieplayer) {                //设置播放器的属性        NSURL *URL = [[NSBundle mainBundle]URLForResource:@"风景" withExtension:@".mp4"];        _movieplayer = [[MPMoviePlayerController alloc]initWithContentURL:URL];        _movieplayer.view.frame = self.view.bounds;        _movieplayer.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;                //添加通知        [self addNotify];    }    return _movieplayer;}- (void)viewDidLoad {    [super viewDidLoad];        [self.view addSubview:self.movieplayer.view];    [self.movieplayer prepareToPlay];    [self.movieplayer play];}//添加通知-(void)addNotify{        //注册播放完成的通知    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification                                               object:_movieplayer];        //注册播放状态改变的通知    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackStateChanged) name:MPMoviePlayerPlaybackStateDidChangeNotification                                              object:_movieplayer];        //注册全屏通知    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayDidEnterFullScreen) name:MPMoviePlayerDidEnterFullscreenNotification                                            object:_movieplayer];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayDidExitFullScreen) name:MPMoviePlayerDidExitFullscreenNotification                                               object:_movieplayer];        //注册请求截屏的通知    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerRequestThumbnailImage) name:MPMoviePlayerThumbnailImageRequestDidFinishNotification                                               object:_movieplayer];    //发送截图请求    [self.movieplayer requestThumbnailImagesAtTimes:@[@(5.0f),@(10.0f)] timeOption:MPMovieTimeOptionNearestKeyFrame];}//截屏-(void)moviePlayerRequestThumbnailImage{        //获取图片    UIImage *image = [self.movieplayer thumbnailImageAtTime:5.0f timeOption:MPMovieTimeOptionNearestKeyFrame];        NSLog(@"%@",image);        if ([self.delegate respondsToSelector:@selector(setImageWithThumbnailImage:)]) {                [self.delegate setImageWithThumbnailImage:image];    }}//播放完成-(void)moviePlayBackDidFinish:(NSNotification *)notification{        NSLog(@"播放完成");}//播放状态改变-(void)moviePlayBackStateChanged{        switch (self.movieplayer.playbackState) {        case MPMoviePlaybackStateStopped:            NSLog(@"播放停止");            break;        case MPMoviePlaybackStatePlaying:            NSLog(@"播放中");            break;        case MPMoviePlaybackStatePaused:            NSLog(@"播放暂停");            break;        case MPMoviePlaybackStateInterrupted:            NSLog(@"播放中断");            break;        case MPMoviePlaybackStateSeekingForward:            NSLog(@"快进播放");            break;        case MPMoviePlaybackStateSeekingBackward:            NSLog(@"回退播放");            break;    }}//进入全屏-(void)moviePlayDidEnterFullScreen{        NSLog(@"进入全屏");}//离开全屏-(void)moviePlayDidExitFullScreen{        NSLog(@"离开全屏");        //关闭播放器    [self.movieplayer.view removeFromSuperview];     self.movieplayer = nil;        if ([self.delegate respondsToSelector:@selector(dismissPlayViewController)]) {               [self.delegate dismissPlayViewController];    }    [[NSNotificationCenter defaultCenter]removeObserver:self];}@end

View Code

演示结果截图：

播放前：播放中：

播放过程中一个指定时间点的视频截图

2、AVPlayer

AVPlayer既可以播放音乐又可以播放视频；使用AVPlayer不能直接显示视频，必须要加入AVPlayerLayer中，并添加到其他能显示的layer中。

//获取播放源的urlNSString *filePath = [[NSBundlemainBundle] pathForResource:@"backspace"ofType:@"mov"];NSURL *sourceMovieURL = [NSURLfileURLWithPath:filePath];//创建播放器AVAsset *movieAsset= [AVURLAsset URLAssetWithURL:sourceMovieURL options:nil];AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:movieAsset];AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];//创建播放图层AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];playerLayer.frame = self.view.layer.bounds;playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;[self.view.layer addSublayer:playerLayer];//开始播放[player play];

3、AVPlayerViewcontroller

AVPlayerViewcontroller继承自UIViewController，一般适用于点击一个视频缩略图，modal出一个新的界面来进行播放的情况。

用法：

//创建播放器AVPlayerViewController *player = [[AVPlayerViewController alloc]init];player.player = [[AVPlayer alloc]initWithURL:movieUrl];//模态出播放器[self presentViewController:player animated:YES completion:nil];

4、ffmpeg-AVPlayer-for-iOS——强大的iOS视频播放框架

ffmpeg-avplayer-for-ios是一个微小但是强大的iOS视频播放框架，能够播放大多数的音频和视频格式文件（包括网络音频和视频流），没有格式转换的烦恼，不依赖VLC和SDL。支持播放1080P视频，但是建议只在iPad Air & iPhone 5s设备上播放1080P视频。

ffmpeg-avplayer-for-ios是专门针对iOS开发者编写的AVPlayer SDK，只需几行代码便可在应用中加入强大的视频播放器。

ffmpeg-avplayer-for-ios依赖于iOS OpenGL ES 2.0框架和基于LGPL协议开源的FFmpeg类库。

截图：