when trying to record,shooting screen seems to be larger than preview screen in galaxy s7.
On your Samsung Galaxy S7, kindly check whether Video Stabilization feature is enabled. If this Video Stabilization feature is activated, then the side area of recording screen is cropped for stabilization adjustment after completion of recording. For this, shooting screen is larger than the preview screen and you can reduce this phenomenon if you turn off Video Stabilization feature.
Thank you for your feedback!
Please answer all questions.