What?
Look, buddy, I don't know. I wanted to play with Rails in my last couple weeks at the Recurse Center and draw more attention to the extremely cool ffmpeg-artschool project; this demonstrates a few of the transforms that they provide examples for, using any of your own videos, with Ruby's carrierwave interface to ffmpeg. "On Ice" kind of calls to mind "On Rails," and ffmpeg does a little performance for you in the browser, and ...
Please explain the joke more
OK, fine, anyway, it lives at https://ffmpeg-on-ice.herokuapp.com/. I do a lot of my own cowboy deployments lately for various reasons (server sovereignty, free academic resources, years of running desktop Linux...) and using Rails also seemed like a good excuse to use Heroku. Plus, this thing actually hits the CPU pretty hard when it processes video, and Heroku's limited compute hours and transient storage were just the ticket for a project that needs a real backend but doesn't do anything persistent. Heroku's free tier memory limits, on the other hand, were rather less helpful... no promises it'll stay up.
Used this as a very helpful starting point.
bundle install
rake db:create
rake db:migrate
Optionally, depending on platform (try it without; Windows msys hates this but webpacker might be unhappy without it):
rails webpacker:install
bundle exec rake assets:precompile
And run with rails s