iOS的影片播放 MediaPlayer 和 AVPlayer

最新推荐文章于 2023-11-17 09:15:00 发布

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最新推荐文章于 2023-11-17 09:15:00 发布

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本文对比了iOS开发中MediaPlayer与AVPlayer在影片播放方面的应用。MediaPlayer简便易用，适合基本需求；AVPlayer则提供了更多控制选项，适用于需要精细调整的场景。文章还提供了两种方式播放影片的具体代码示例。

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iOS的影片播放 MediaPlayer 和 AVPlayer

分类： Iphone 2013-01-28 16:19 10488人阅读评论(0) 收藏举报

在iOS開發上，如果遇到需要播放影片，如開機動畫…，我們很習慣地會使用MediaPlayer來播放影片，因為很方便使用，所以就一直使用下去。但是隨著客戶的要求越來越嚴苛，尤其是過場動畫或互動效果上的表現。所以如果在一些動畫中還挾帶影片一起運算，那勢必機器會跑不動。所以在iOS 4之後，我們可以使用AVPlayer這個類別來進行更細微的操作。

備註：

MediaPlayer的影片是放在UIView 裡面，而AVPlayer是放在AVPlayerLayer裡面，AVPlayerLayer是CALayer 的子類別。
使用MediaPlayer前，要記得加入MediaPlayer.framework及#import <MediaPlayer/MediaPlayer.h>
使用AVPlayer前，要記得加入AVFoundation.frameworkk及#import <AVFoundation/AVFoundation.h>

請參考以下的範例：

使用MediaPlayer來播放影片

[cpp] view plain copy print ?

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"backspace" ofType:@"mov"];
NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:sourceMovieURL];
moviePlayer.view.frame=CGRectMake(0, 0, 1024, 768);
moviePlayer.controlStyle=MPMovieControlStyleNone;
// Play the movie!
[self.view addSubview:moviePlayer.view];

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"backspace" ofType:@"mov"];
    NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
 
    moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:sourceMovieURL];
    moviePlayer.view.frame=CGRectMake(0, 0, 1024, 768);
    moviePlayer.controlStyle=MPMovieControlStyleNone;
 
    // Play the movie!
    [self.view addSubview:moviePlayer.view];

使用AVPlayer來播放影片

[cpp] view plain copy print ?

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"backspace" ofType:@"mov"];
NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
AVAsset *movieAsset = [AVURLAsset URLAssetWithURL:sourceMovieURL options:nil];
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:movieAsset];
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
playerLayer.frame = self.view.layer.bounds;
playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
[self.view.layer addSublayer:playerLayer];
[player play];

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"backspace" ofType:@"mov"];
    NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
 
    AVAsset *movieAsset	= [AVURLAsset URLAssetWithURL:sourceMovieURL options:nil];
    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:movieAsset];
    AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];
    AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
    playerLayer.frame = self.view.layer.bounds;
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
 
    [self.view.layer addSublayer:playerLayer];
    [player play];