val exifInterface: <ERROR CLASS>
contains frame metadata like orientation by which the frame needs to be rotated The orientation ExifInterface.TAG_ORIENTATION would be one of ExifInterface.ORIENTATION_NORMAL // does not need rotation ExifInterface.ORIENTATION_ROTATE_90 // needs 90 degree rotation ExifInterface.ORIENTATION_ROTATE_180 // needs 180 degree rotation ExifInterface.ORIENTATION_ROTATE_270 // needs 270 degree rotation