Ask HN: What is the best solution for storing and serving user uploaded video?

I am working on an app where users can upload few minutes long videos. This is my first time I am building something like this and I wanted some advice on how I should go about implementing it. I understand storing media in DB is not the ideal solution and using something like Amazon S3 or Google Cloud Storage would be better. So what should I know before making a decision? It would be a youtube style app where certain users can upload videos and everyone can check it out. The current tech stack I am leaning towards is a NodeJs app with PSQL and Firebase Cloud Storage for storing the actual media files. Does this sound sensible? what are my other options?