Recording landscape video even if the iphone ist held for vertical video

If an iphone user is recording vertical video it would be a great feature if the iphone records left and right of the visual in the black bar area as well - this eleminates the problem while cutting a movie in landscape format to use poor looking ghost picture in the left and right bars. It would be nice if this feature is switchable in an option by using flags how the video was recorded and played back. Think about it - mainly people all over the world are recording vertical not because its cool, but because this is the best way to hold the device. Any suggestions... Thomas N.- Hamburg/Germany