我不太清楚如何处理前置摄像头的视频捕获方向。拍摄视频和图片时，我对后置摄像头进行了所有旋转处理，拍摄照片时，我对前摄像头进行了所有处理，并以正确的方向保存了捕获的视频和图片，但前置摄像头视频捕获除外。
第一个问题是，在任一横向模式下，都无法正确地以正确的方向正确保存视频。第二个问题是已保存的视频已镜像。虽然我知道如何使用前置摄像头处理图片的这种镜像效果，但我不确定调用视频处理该如何调用。
我很难找到专门针对此问题的任何东西，但未能做到。如果有人可以指出我要解决这个特定问题的线程，那将是很好的。
无论哪种方式，这都是在设备方向更改时处理视频方向的调用方法。如果使用前置摄像头，我不确定要在代码中添加什么内容。
/**************************************************************************
DEVICE ORIENTATION DID CHANGE
**************************************************************************/
func deviceOrientationDidChange() {
println("DEVICE ORIENTATION DID CHANGE CALLED")
let orientation: UIDeviceOrientation = UIDevice.currentDevice().orientation
//------ IGNORE THESE ORIENTATIONS ------
if orientation == UIDeviceOrientation.FaceUp || orientation == UIDeviceOrientation.FaceDown || orientation == UIDeviceOrientation.Unknown || orientation == UIDeviceOrientation.PortraitUpsideDown || self.currentOrientation == orientation {
println("device orientation does not need to change --- returning...")
return
}
self.currentOrientation = orientation
//------ APPLY A ROTATION USING THE STANDARD ROTATION TRANSFORMATION MATRIX in R3 ------
/*
x y z
--- ---
x | cosø sinø 0 |
y | -sinø consø 0 |
z | 0 0 1 |
--- ---
*/
//----- PERFORM BUTTON AND VIDEO DATA BUFFER ROTATIONS ------
switch orientation {
case UIDeviceOrientation.Portrait:
rotateButtons(self.degrees0)
if self.usingFrontCamera == true {
}
else {
}
println("Device Orientation Portrait")
break
case UIDeviceOrientation.LandscapeLeft:
println("Device Orientation LandScapeLeft")
rotateButtons(self.degrees90)
if self.usingFrontCamera == true {
println("Using front camera, rotation in landscape left")
// if let connection = self.captureConnection {
//
// connection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight
//
// println("Capture connection Orientation is LandScape Right")
// }
// else {
//
// println("Capture connection is nil, could not change video orientation")
// }
}
else {
if let connection = self.captureConnection {
connection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight
println("Capture connection Orientation is LandScape Right")
}
else {
println("Capture connection is nil, could not change video orientation")
}
}
break
case UIDeviceOrientation.LandscapeRight:
println("Device Orientation LandscapeRight")
rotateButtons(-self.degrees90)
if self.usingFrontCamera == true {
println("Using front camera, rotation in landscape right")
// if let connection = self.captureConnection {
//
// connection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight
//
// println("Capture connection Orientation is LandScape Left")
// }
// else {
//
// println("Capture connection is nil, could not change video orientation")
// }
}
else {
if let connection = self.captureConnection {
connection.videoOrientation = AVCaptureVideoOrientation.LandscapeLeft
println("Capture connection Orientation is LandScape Left")
}
else {
println("Capture connection is nil, could not change video orientation")
}
}
break
default:
break
}
}
最佳答案
基于此答案:Video Saving in the wrong orientation AVCaptureSession
我也遇到了同样的问题，并在发布此帖子后得以解决。
var videoConnection:AVCaptureConnection?
for connection in self.fileOutput.connections {
for port in connection.inputPorts! {
if port.mediaType == AVMediaTypeVideo {
videoConnection = connection as? AVCaptureConnection
if videoConnection!.supportsVideoMirroring {
videoConnection!.videoMirrored = true
}
}
}
}
}
请让我知道是否对您有帮助
关于ios - 使用前置摄像头时需要镜像视频方向和 handle 旋转，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/30406417/