以 iOS 播放视频

Question

我正在尝试播放存储在我设备上的视频，同时尝试 AVPlayer 和 MPMoviePlayerController。视频 URl 是：file:///var/mobile/Containers/Data/Application/73695F3E-9351-447B-BB8A-0B4A62CE430F/Documents/08-03-201711:48:50.3gp。现在的问题是我出现黑屏。

AVPlayer *player = [AVPlayer playerWithURL:fileURL];
AVPlayerViewController *playerViewController = [AVPlayerViewController new];
[player pause];
[player play];
playerViewController.player = player;

[self addChildViewController: playerViewController];
[self.view addSubview: playerViewController.view];
//[playerViewController.player play];//Used to Play On start
[self presentViewController:playerViewController animated:YES completion:nil];

我认为问题出在 link。我正在做的是获取本地目录 link 并将名称附加到 link.

Answer 1

编辑：MPMoviePlayerController 现已弃用。所以我使用了 AVPlayerViewController。并编写了以下代码：

 NSURL *videoURL = [NSURL fileURLWithPath:filePath];

//filePath may be from the Bundle or from the Saved file Directory, it is just the path for the video
    AVPlayer *player = [AVPlayer playerWithURL:videoURL];
    AVPlayerViewController *playerViewController = [AVPlayerViewController new];
    playerViewController.player = player;
    //[playerViewController.player play];//Used to Play On start
    [self presentViewController:playerViewController animated:YES completion:nil];

请不要忘记导入以下框架：

#import <AVFoundation/AVFoundation.h>
#import <AVKit/AVKit.h>

您可以使用MPMoviePlayerController播放本地文件。

添加 Mediaplayer 框架并在 viewController 中执行#import。
将您在桌面上创建的视频文件拖放到 xcode。
获取本地视频路径

NSStringthePath=[[NSBundle mainBundle] pathForResource:@"yourVideo" ofType:@"MOV"]; NSURLtheurl=[NSURL fileURLWithPath:thePath];
用你的路径初始化moviePlayer。

self.moviePlayer=[[MPMoviePlayerController 分配] initWithContentURL:theurl]; [self.moviePlayer.view setFrame:CGRectMake(40, 197, 240, 160)]; [self.moviePlayer prepareToPlay]; [self.moviePlayer setShouldAutoplay:NO]; // 其他选项你可以通过文档查看。 [self.view addSubview:self.moviePlayer.view];
控制播放后要做什么：

[[NSNotificationCenter defaultCenter] addObserver:self 选择器:@selector(playBackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer]; //playBackFinished 将是您自己的方法。

编辑 2：要处理 AVPlayerViewController 而不是 MPMoviePlayerController 的完成，请使用以下...

AVPlayerItem *playerItem = player.currentItem;

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playBackFinished:) name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];

在此示例中，我在完成后关闭 AVPlayerViewController：

-(void)playBackFinished:(NSNotification *) notification {
    // Will be called when AVPlayer finishes playing playerItem

    [playerViewController dismissViewControllerAnimated:false completion:nil];
}

Answer 2

这可能是因为您的文件 url 不正确。

尝试以下代码来获取答案的路径。

如果您的 mac 中有视频，请先将其复制到您的项目中，然后将其添加到 Xcode 中。

NSString *filepath   =   [[NSBundle mainBundle] pathForResource:@"08-03-201711:21:67" ofType:@"3gp"];  

NSURL *fileURL    =   [NSURL fileURLWithPath:filepath];

并使用此路径到 AVPlayer

AVPlayer *player = [AVPlayer playerWithURL:fileURL];
AVPlayerViewController *playerViewController = [AVPlayerViewController new];
[player pause];
[player play];
playerViewController.player = player;

[self addChildViewController: playerViewController];
[self.view addSubview: playerViewController.view];

**当我检查你的代码时，黑屏可能是由于你将 AVPlayer 添加到层中而不是 subview/childviewcontroller。所以试试我的代码吧！

Answer 3

我会好好的 solution.It 完美无缺。

ViewController.h

#import <UIKit/UIKit.h>
#import <AVKit/AVKit.h>

@interface ViewController : UIViewController
@property (strong, nonatomic) AVPlayerViewController *playerViewController;
- (IBAction)actionPlayVideo:(id)sender;

@end

ViewController.m

#import "ViewController.h"

@interface ViewController (){
    NSURL *vedioURL;
}

@end

@implementation ViewController
@synthesize playerViewController;

- (IBAction)actionPlayVideo:(id)sender{
    NSString *fullpath = [[self documentsDirectory] stringByAppendingPathComponent:@"yourdate.3gp"];
    vedioURL =[NSURL fileURLWithPath:fullpath];
    AVPlayerItem* playerItem = [AVPlayerItem playerItemWithURL:vedioURL];
    AVPlayer* playVideo = [[AVPlayer alloc] initWithPlayerItem:playerItem];
    playerViewController = [[AVPlayerViewController alloc] init];
    playerViewController.player = playVideo;
    playerViewController.player.volume = 0;
    playerViewController.view.frame = self.view.bounds;
    [self.view addSubview:playerViewController.view];
    [playVideo play];
}
-(NSString *)documentsDirectory{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    return documentsDirectory;
}

以 iOS 播放视频

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