Возвращает, если текстура изображение поворачивается вертикально
Please note, that this will query platform-specific part, which might be not ready before actual video feed started; so it is not enough to call it once after play.
scaleY = webcam.videoVerticallyMirrored ? -1.0 : 1.0; texture.transform.localScale = new Vector3(width, scaleY * height, 0.0);