YouTube can't process my video

johnnyferalcat Posts: 4 Just Starting Out

So I'm using hitfilm Express 13. And I finished my video, exported it to a YouTube 1080p HD.mp4. and then I saved it as a file but when I try to upload it to YouTube it doesn't work, what am I doing wrong? I work so hard for this video, I've struggled with other video editors and such, and now I'm starting to feel hopeless. Please help me. Like the file doesn't look like a video file.