Which black bar are you referring to? Assuming it the areas to the sides of the video when viewed in landscape mode, depending on your screen size and proportion, the video may actually be larger if you do NOT put it in full screen mode.
Customer support service by UserEcho
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Which black bar are you referring to? Assuming it the areas to the sides of the video when viewed in landscape mode, depending on your screen size and proportion, the video may actually be larger if you do NOT put it in full screen mode.