Help Me Understand S3 Bubble and Get (ADULT) Videos from AWS Hosted to WP site

I had a freelancer set up AWS elastic transcoder and cloudfront. They also recommended S3 Bubble. Unfortunately, they have not been able to get back to me due to war in their country. I am unable to get the videos on AWS to load on the site and I also don't understand how to use S3 Bubble in my current theme (or if it's possible). Part of other freelancer's job was to explain this to me but I can't get hold of him due to internet problems in his country. I need help to: - get the videos to display on WP site (using Divi theme). - If S3 Bubble wont' work, that's fine. I'm happy to get the link from AWS. I also need to understand: - how to upload videos so they will be encoded to webm format - then use them on site live - I don't want to use S3 Bubble monthly (US$99) charge. I only want the free version so if it won't work with free then I'd prefer to remove it (was recommended by other freelancer). I need: - mp4 videos to be able to be uploaded to AWS - compressed and encoded to webm via Amazon Elastic Transcoder (set up by other freelancer) - hosted in Cloudfront (setup) - delivered to WP site in Divi theme This should be just explaining and showing. Probably an hour max. Please quote with experience and put: "AWS Cloudfront expert" at top of proposal. thanks