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AVCaptureVideoDataOutput我正在尝试通过设置kCVPixelBufferWidthKey&捕获特定大小的帧kCVPixelBufferHeightKey
问题是缓冲区的宽度和高度永远不会改变,它们总是回来852x640

这是我的代码:

// 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()];   

编辑:来自 iOS AVCaptureOutput.h:目前,唯一支持的键是 kCVPixelBufferPixelFormatTypeKey。

有人知道设置输出缓冲区宽度/高度的工作方法吗?

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1 回答 1

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来自 iOS AVCaptureOutput.h:Currently, the only supported key is kCVPixelBufferPixelFormatTypeKey.

这总结了它。

于 2011-11-02T10:18:05.080 回答