Streaming a video file from firebase storage using Javascript

I have worked with images, they seem to do well when you use the downloadURL() to embed them in html tags,but the video doesn't work. I tried using the video and iframe tag in html but it doesn't work. From what I understand, is that incoming file is not a video but a general file, it downloads with ".mp4 extension. Please suggest what should I do. I am working on a small time project where users can upload videos and watch other user's video.