相关疑难解决方法(0)

在录制视频之前,我在调用摄像机视图时实现了叠加视图.

pickerController.cameraOverlayView =myOverlay;

视频录制并在录制视频和通过电子邮件等共享后将视频保存到相册中一切正常.

如果我将视频质量用作"高品质",那么录制的视频已变得庞大.例如,如果我以高质量录制视频30秒,录制的视频大约为30 - 40 mb.

pickerController.videoQuality = UIImagePickerControllerQualityTypeHigh;

如何在共享之前对高质量录制视频进行压缩编程,就像Apple如何使用内置录像机一样？

请指导我解决这个问题.

谢谢!

更新:

这就是我最近的尝试,但仍然没有成功:我想压缩拍摄的录制视频来到didFinishPickingMediaWithInfo并存储在相同的相册实际视频路径本身,而不是其他任何地方.我测试同一个视频被压缩到非常小的尺寸,当我从照片库中选择时,但从相机拍摄的同一视频来自didFinishPickingMediaWithInfo并未压缩,尽管我使用下面的AVAssetExportSession代码.

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];


if ([mediaType isEqualToString:(NSString *)kUTTypeMovie])
{

    NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
    NSString *urlPath = [videoURL path];

    if ([[urlPath lastPathComponent] isEqualToString:@"capturedvideo.MOV"])
    {
        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum (urlPath))
        {
            [self copyTempVideoToMediaLibrary :urlPath];


        }
        else
        {
            NSLog(@"Video Capture Error: Captured video cannot be saved...didFinishPickingMediaWithInfo()");                
        }
    }       
    else
    {
        NSLog(@"Processing soon to saved photos album...else loop of lastPathComponent..didFinishPickingMediaWithInfo()");
    }
}    
[self …