从视频ios创建缩略图？

Question

我从照片库中的视频获得了缩略图，现在我想在图像缩略图上添加持续时间和相机图标。有什么建议吗？感谢。

Answer 1

当你从图书馆选择视频文件时，你可以获得视频的持续时间： -

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    selectedVideoUrl = [info objectForKey:UIImagePickerControllerMediaURL];

    AVPlayerItem *SelectedItem = [AVPlayerItem playerItemWithURL:selectedVideoUrl];

    CMTime duration = SelectedItem.duration;
    float seconds = CMTimeGetSeconds(duration);
    NSLog(@"duration: %.2f", seconds);
}

你可以使用以下方式获取视频： -

-(UIImage *)getThumbNail:(NSString*)stringPath
{

//stringPath is a path of stored video file from document directory
    NSURL *videoURL = [NSURL fileURLWithPath:stringPath];

    MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];

    UIImage *thumbnail = [player thumbnailImageAtTime:1.0 timeOption:MPMovieTimeOptionNearestKeyFrame];

    //Player autoplays audio on init
    [player stop];

    return thumbnail;
}

现在您只需要创建自定义视图并执行所需操作。

不要忘记添加

#import <MediaPlayer/MediaPlayer.h>
#import <AVFoundation/AVFoundation.h>
#import <AVFoundation/AVAsset.h>

这里还有一个很合适的答案  与您的问题请检查Bellow： -

iOS: get video duration and thumbnails without playing video