Thank you for your words! Actually Godot's video support was more or less straightforward, it's just that it doesn't support MP4 files so I had to convert the video to OGV which ended up making the video pretty choppy at first so I had to find a reliable way of converting the video file format without messing it up ahaha
And thanks for the tip, I'll definitely look into the mouse locking issue next time. It's a pretty weird bug that sometimes pops up, and sometimes doesn't. Hmm.. a challenge for next time!