Could you please share a full screenshot of your chart?

I think you are using a different time interval on your chart, like 1hr or 1 day. If that's the case, you will get a different result from that in the video. The video author's chart is on a weekly interval, which means his 200 MA means 200 weekly MA

If his chart is on a daily interval, that would mean the MA shown would be 200 Daily MA