视频播放

Tanghulu.png

视频播放器的实现有多种方式，此处主要针对主流方式实现一个播放器

MediaPlayer框架

• 直接用系统提供的MPMoviePlayerViewController

NSString *path = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"mp4"];
MPMoviePlayerViewController *moviePlayerVC = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:path]];
[self presentViewController:moviePlayerVC animated:YES completion:nil];

• 基于MPMoviePlayerController自定义
  例如KRVideoPlayer

AVKit框架

DDYPlayerView.h

#import 
@import AVFoundation;
@interface DDYPlayerView : UIView
@property (nonatomic ,strong) AVPlayer *player;
@end

DDYPlayerView.m

#import "DDYPlayerView.h"
@implementation DDYPlayerView
- (id)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor blackColor];
    }
    return self;
}
+ (Class)layerClass {
    return [AVPlayerLayer class];
}
- (AVPlayer *)player {
    return [(AVPlayerLayer *)[self layer] player];
}
- (void)setPlayer:(AVPlayer *)player {
    [(AVPlayerLayer *)[self layer] setPlayer:player];
}

@end

获取视频第一帧

 - (UIImage *)getVideoFirstPic:(NSURL *)url {
     // 获取资源类
     AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
     // 视频中截图类
     AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
     generator.appliesPreferredTrackTransform = YES;
     //设置时间为0秒
     CMTime time = CMTimeMakeWithSeconds(0, 600);
     // 取出视频在0秒时候的图片
     CGImageRef image = [generator copyCGImageAtTime:time actualTime:nil error:nil];
     UIImage *thumb = [[UIImage alloc] initWithCGImage:image];
     CGImageRelease(image);
     return thumb;
 }

附

• 视频采集

• UIImagePickerController 视频录制操作，视频大小，时间长度