OC获取视频的第一帧图片

原创

已于 2024-12-13 15:26:18 修改 · 289 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#服务器 #linux #数据库

于 2023-11-14 14:18:42 首次发布

获取一堆
AVAssetImageGenerator *imageGenerator = [AVAssetImageGenerator assetImageGeneratorWithAsset:self.asset];
imageGenerator.maximumSize = CGSizeMake(200.0f,0.0f);
CMTime duration = self.asset.duration;
NSMutableArray *times = [NSMutableArray array];
CMTimeValue increment = duration.value/20;
NSLog(@"%lld",increment);
CMTimeValue currentValue = 0;
while (currentValue <= duration.value) {
     NSLog(@"%lld",increment);
     NSLog(@"currentValue==%lld",currentValue);
    CMTime time = CMTimeMake(currentValue, duration.timescale);
    CMTimeShow(time);
    [times addObject:[NSValue valueWithCMTime:time]];
    currentValue+=increment;
    NSLog(@"%lld",increment);
    NSLog(@"currentValue===%lld",currentValue);
}
__block NSUInteger imageCount = times.count;
__block NSMutableArray *images = [NSMutableArray array];
__block  AVAssetImageGeneratorCompletionHandler handler;
[imageGenerator generateCGImagesAsynchronouslyForTimes:times completionHandler:^(CMTime requestedTime, CGImageRef