Q1: how to replace the videos? A1: step1: upload the videos in C:\Users\Chuntung\Documents\GitHub\bodymaps\dist\utils\AbdomenAtlas1.0 and C:\Users\Chuntung\Documents\GitHub\bodymaps\dist\utils\AbdomenAtlas1.1 step2: adjust the link corresponding to line 8-15 in App.jsx file step3: in terminal, do: npm run start, npm run deploy