ios - 从视频ios创建缩略图？

Question

我从照片库中的视频中获得了缩略图，现在我想在缩略图上添加持续时间和相机图标，如​​ image 。有什么建议吗？谢谢。

Answer 1

当您从库中选择视频文件时，您可以获得视频的持续时间，如下所示:-

- (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);
}

您可以使用以下方式获取视频拇指:-

-(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;
}

现在你有你只需要创建你的自定义 View 并做你想做的事。

不要忘记添加

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

这里还有一个很好的答案，适合
您的问题请检查以下内容:-

iOS: get video duration and thumbnails without playing video