iphone - UIVideoEditorController 丢失视频分辨率

Question

我正在尝试使用 UIVideoEditorController 来编辑我的视频，但它似乎失去了我的视频分辨率。我的原始视频是 720 x 1280，但在使用 UIVideoEditorController 后，质量变成了 360 x 640。

我尝试将 videoQuality 设置为 UIImagePickerControllerQualityTypeHigh 甚至 UIImagePickerControllerQualityTypeIFrame1280x720，但这没有帮助。

我在 iPad 上工作，这是我的代码:

self.editorController = [[[UIVideoEditorController alloc] init] autorelease];
self.editorController.videoPath = self.tempVideoPath;
self.editorController.delegate = self;
self.editorController.videoQuality = UIImagePickerControllerQualityTypeHigh;

CKLog(@"%d", self.editorController.videoQuality);

self.popOverController = [[[UIPopoverController alloc] initWithContentViewController:self.editorController] autorelease];
self.popOverController.delegate = self;
self.popOverController.popoverContentSize = CGSizeMake(700, 700);
[self.popOverController presentPopoverFromRect:CGRectMake(0, 0, 1, 1) inView:self.videoView permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

Answer 1

根据 UIVideoEditorController 文档:

A UIVideoEditorController object, or video editor, manages the system-supplied user interface for trimming video frames from the start and end of a previously recorded movie as well as reencoding to lower quality...

UIVideoEditorController 类有一个名为 videoQuality 的属性。它允许我们在保存修剪后的视频时选择视频质量。 (默认值为 UIImagePickerControllerQualityTypeLow)

UIImagePickerControllerQualityTypeHigh 使用设备上事件相机支持的最高质量视频录制。它看起来好多了，但似乎仍然失去了一些原始分辨率。