Iphone开发获取视频缩略图和时长

最新推荐文章于 2025-10-01 16:54:48 发布

转载最新推荐文章于 2025-10-01 16:54:48 发布 · 1.8k 阅读

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#视频

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获取视频缩略图

+(UIImage *)getImage:(NSString *)videoURL
{
NSDictionary *opts = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:AVURLAssetPreferPreciseDurationAndTimingKey];

    NSURL *url = [[[NSURL alloc] initFileURLWithPath:videoURL] autorelease];

    AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:url options:opts];

    AVAssetImageGenerator *generator = [AVAssetImageGenerator assetImageGeneratorWithAsset:urlAsset];

    generator.appliesPreferredTrackTransform = YES;
    generator.maximumSize = CGSizeMake(600, 450);

    NSError *error = nil;
    CGImageRef img = [generator copyCGImageAtTime:CMTimeMake(10, 10) actualTime:NULL error:&error];
    UIImage *image = [UIImage imageWithCGImage: img];

    return image;
}

注意添加AVFoundation框架

ios4 怎么获取视频的总时长

NSURL    *movieURL = [NSURL URLWithString:movieStr];
                    NSDictionary *opts = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO]
                                                                     forKey:AVURLAssetPreferPreciseDurationAndTimingKey];
                    AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:movieURL options:opts];  // 初始化视频媒体文件
                    int minute = 0, second = 0;
                    second = urlAsset.duration.value / urlAsset.duration.timescale; // 获取视频总时长,单位秒
                    //NSLog(@"movie duration : %d", second);
                    if (second >= 60) {
                        int index = second / 60;
                        minute = index;
                        second = second - index*60;
                    }