iPhone视频压缩开/关

Question

我已经通过以下方式实现了视频采集：

IImagePickerController *imagePicker = [[UIImagePickerController alloc] init];    
imagePicker.sourceType =  UIImagePickerControllerSourceTypeCamera;  
NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:imagePicker.sourceType];
if ([sourceTypes containsObject:(NSString *)kUTTypeMovie ]){
    imagePicker.mediaTypes =  sourceTypes;
}           
imagePicker.delegate = self;
[self presentModalViewController:imagePicker animated:YES];
[imagePicker release];

我可以使用YouTube接口录制视频并将其发送到YouTube，但如果视频长度超过大约5分钟，并且我单击USE -应用程序将关闭。但如果我从库中选择了10分钟的视频(我看到“正在压缩视频”的进度)，视频就会保存到我的视图中并上传到YouTube。

有人能告诉我问题出在哪里吗？

Answer 1

您使用的是高分辨率1280x720的QualityTypeHigh。所以它需要很大的内存。

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;

[imagePicker setVideoQuality:UIImagePickerControllerQualityQualityTypeMedium];

imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;

imagePicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];

[imagePicker setVideoMaximumDuration:30];

imagePicker.allowsEditing = YES;

[self presentModalViewController:imagePicker animated:YES];

[imagePicker release];