English 中文(简体)
AVCaptureVideoDataOutput and establishing kCVPixelBuffer WidthKey & kCVPixelBuffer ight 关键
原标题:AVCaptureVideoDataOutput and setting kCVPixelBufferWidthKey & kCVPixelBufferHeightKey

I m trying to capture frames in a specific size from AVCaptureVideoDataOutput by setting kCVPixelBufferWidthKey & kCVPixelBufferHeightKey.
Problem is the buffer width and height never change, they always come back 852x640

下面是我的法典:

// Add the video frame output   
    self.videoOutput = [[AVCaptureVideoDataOutput alloc] init];
    [videoOutput setAlwaysDiscardsLateVideoFrames:YES];
// Use RGB frames instead of YUV to ease color processing
[videoOutput setVideoSettings:[NSDictionary dictionaryWithObjectsAndKeys:
                               [NSNumber numberWithFloat:320.0], (id)kCVPixelBufferWidthKey,
                               [NSNumber numberWithFloat:320.0], (id)kCVPixelBufferHeightKey,
                               [NSNumber numberWithInt:kCVPixelFormatType_32BGRA],(id)kCVPixelBufferPixelFormatTypeKey,
                                                              nil]];
 [videoOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];   

EDIT:SOS:CaptureOutputh: 目前,唯一得到支持的关键是KCVPixelBufferPixelFormatTypeKey。

任何人都知道确定产出缓冲宽度/宽度的工作方法?

最佳回答

缩略语:Currently, 唯一支持的关键是kCVPixelBufferPixelFormatTypeKey.

这笔钱是这样。

问题回答

暂无回答




相关问题
List Contents of Directory in a UITableView

I am trying to list the contents of Ringtones directory in a TableView, however, I am only getting the last file in the directory in ALL cells, instead of file per cell. This is my code: - (...

iPhone NSUserDefaults persistance difficulty

In my app i have a bunch of data i store in the NSUserdefaults. This information consists of an NSObject (Object1) with NSStrings and NSNumbers and also 2 instances of yet another object (Object2). ...

Writing a masked image to disk as a PNG file

Basically I m downloading images off of a webserver and then caching them to the disk, but before I do so I want to mask them. I m using the masking code everyone seems to point at which can be found ...

Resize UIImage with aspect ratio?

I m using this code to resize an image on the iPhone: CGRect screenRect = CGRectMake(0, 0, 320.0, 480.0); UIGraphicsBeginImageContext(screenRect.size); [value drawInRect:screenRect blendMode:...

Allowing interaction with a UIView under another UIView

Is there a simple way of allowing interaction with a button in a UIView that lies under another UIView - where there are no actual objects from the top UIView on top of the button? For instance, ...

热门标签