创建图像选择器
//1. 判断是否可用
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]) {
return;
}
//2. 创建图像选择器
UIImagePickerController *picker = [UIImagePickerController new];
//3. 设置类型
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
//4. 设置媒体类型
picker.mediaTypes = @[(NSString *)kUTTypeMovie];
//5. 设置代理
picker.delegate = self;
//6. 模态弹出
[self presentViewController:picker animated:YES completion:nil];
压缩视频
#pragma mark 选中视频的时候, 进行压缩处理
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
//1. 获取媒体类型
NSString *mediaTyep = info[UIImagePickerControllerMediaType];
//2. 获取视频的地址
id url = info[UIImagePickerControllerMediaURL];
//3. 开始导出--> 压缩
[self exportWithURL:url];
}
- (void)exportWithURL:(NSURL *)url
{
//1. 获取资源
AVAsset *asset = [AVAsset assetWithURL:url];
//2. 根据资源, 创建资源导出会话对象
//presetName : 压缩的大小
AVAssetExportSession *session = [[AVAssetExportSession alloc] initWithAsset:asset presetName:AVAssetExportPresetHighestQuality];
//3. 设置导出路径
session.outputURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:@"12345.mov"]];
//4. 设置导出类型
session.outputFileType = AVFileTypeQuickTimeMovie;
//5. 开始导出
[session exportAsynchronouslyWithCompletionHandler:^{
NSLog(@"当你看到这句话的时候, 恭喜你已经导出成功");
}];
}
