Question

我是新来的。我已经有两天的时间浏览解决方案，但不满意。

这是我的代码：

NSString *docPath = [NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *docaPathFull = [docPath stringByAppendingPathComponent:@"/IMG_0003.m4v"];
self.videoURL = [NSURL fileURLWithPath:docaPathFull];

MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
UIImage  *thumbnail = [player thumbnailImageAtTime:4.0 timeOption:MPMovieTimeOptionExact];
player = nil;       
self.imageView.image = thumbnail;

问题是，我无法为MPMoviePlayerController制作视频文件。我无法获得缩略图，我无法播放它，只是黑色播放器和加载无限。

我确实尝试过：

NSString*thePath=[[NSBundle mainBundle] pathForResource:@"IMG_0003" ofType:@"m4v"];
self.videoURLtheurl=[NSURL fileURLWithPath:thePath];

和这个

self.videoURL = [[NSBundle mainBundle] URLForResource:@"IMG_0005" withExtension:@"mov"];

和这个

NSString *filePath = @"/Users/[user]/Documents/video/IMG_0004.mov";
self.videoURL = [NSURL fileURLWithPath:filePath];

如果你有任何想法如何挽救我的生命，请做!!!

非常感谢你的时间。

Answer 1

实际上这是我项目中的工作示例。确保已将m4v文件添加到项目中。通知是我的需要，也许对你来说没有必要。

theMovie = [[MPMoviePlayerController alloc] initWithContentURL:
    [NSURL fileURLWithPath: [[NSBundle mainBundle] 
    pathForResource:@"yourmovie" ofType:@"m4v"]]];

theMovie.view.frame = CGRectMake(0, 0, 320, 480);
[theMovie setControlStyle:MPMovieControlStyleNone];
[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(moviePlayBackDidFinish:) 
                                             name:MPMoviePlayerPlaybackDidFinishNotification 
                                           object:theMovie];
[self.view addSubview:theMovie.view];    
[theMovie play];

Answer 2

您可以使用以下方法获取给定视频网址的缩略图，

    -(UIImage *) giveThumbofVideoUrl:(NSURL *) url{
            NSString *urlString = [url absoluteString];
            AVAsset *asset = [AVAsset assetWithURL:url];
            AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc]initWithAsset:asset];
            imageGenerator.appliesPreferredTrackTransform = YES;
            //imageGenerator.maximumSize = CGSizeMake(320,480);
            CMTime time = CMTimeMake(1, 1);
            CGImageRef imageRef = [imageGenerator copyCGImageAtTime:time actualTime:NULL error:NULL];
            UIImage *image = [UIImage imageWithCGImage:imageRef];
            CGImageRelease(imageRef);
    return image;
   }

如何使用它？，

NSString*thePath=[[NSBundle mainBundle] pathForResource:@"IMG_0003" ofType:@"m4v"];
NSURL *movieUrl=[NSURL fileURLWithPath:thePath];
UIImage  *thumbnail = [self giveThumbofVideoUrl:movieUrl];

Answer 3

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

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>

希望这有助于......

ios MPMoviePlayerController无法在模拟器上播放本地文件

3 个答案: