IOS 播放視頻（MPMoviePlayerController、MPMoviePlayerViewController）

● iOS提供了叫 做MPMoviePlayerController、MPMoviePlayerViewController的兩個 類,可以用來輕松播放視頻

 ➢ YouTobe就是用MPMoviePlayerController實現的 ➢ MPMoviePlayerViewController只能全屏播放視頻

● 上述兩個類都定義在了MediaPlayer框架中

 

 

 

 

 

MPMoviePlayerController-01-加載資源

 // 加載視頻資源
NSString *urlString = [[NSBundle mainBundle]

pathForResource:@"sample_iTunes" ofType:@"mov"]; 

NSURL *url = [NSURL fileURLWithPath:urlString]; 

// 創建播放器

_player = [[MPMoviePlayerController alloc] initWithContentURL:url];

// 加載視頻資源
NSString *urlString = [[NSBundle mainBundle] pathForResource:@"sample_iTunes" ofType:@"mov"];

NSURL *url = [NSURL fileURLWithPath:urlString]; 

// 創建播放器

_player = [[MPMoviePlayerController alloc] initWithContentURL:url]; 

 

MPMoviePlayerController-02-顯示

 

// 設置尺寸
_player.view.frame = self.view.bounds;

_player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth |

UIViewAutoresizingFlexibleHeight; 

// 添加到控制器的view上
[self.view addSubview:_player.view]; // 播放
[_player play];

 

 

MPMoviePlayerController-03-添加通知 監聽

 

// 監聽播放狀態的改變

 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoStateChange)

name:MPMoviePlayerPlaybackStateDidChangeNotification object:_player]; 

// 監聽播放器結束全屏

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(exitFullscreen) name:MPMoviePlayerDidExitFullscreenNotification object:_player]; 

 

MPMoviePlayerController其他屬性

 

● 是否要自動播放
@property(nonatomic) BOOL shouldAutoplay;

● 全屏顯示
@property(nonatomic, getter=isFullscreen) BOOL

fullscreen;
- (void)setFullscreen:(BOOL)fullscreen animated: 

(BOOL)animated;

● 截取視頻中的圖片

- (void)requestThumbnailImagesAtTimes:(NSArray *)playbackTimes timeOption:(MPMovieTimeOption)option; 

 

 

MPMoviePlayerViewController

● MPMoviePlayerViewController繼承自UIViewController,它內部封裝了一 個MPMoviePlayerController

● MPMoviePlayerViewController只能全屏播放

● 簡單使用:

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

其他

● 音頻處理
➢ 依賴的框架:AVFoundation、AudioToolbox框架

➢ 播放長音樂:AVAudioPlayer
➢ 播放短音效:加載音頻文件生成SystemSoundID

➢ 錄音:AVAudioRecord

 

 ● 較為底層、高級的音頻\視頻處理

➢ CoreAudio、CoreVideo框架