heroku addons:add zencoder:dev. The "Developer" account is just like the Zencoder "Test" account that will allow free integration using short test clips. Beyond that, we're offering a wide range of plans starting at 1,000 minutes with many intermediate steps up to 100,000 minutes (larger accounts available on request). We're big fans of the Heroku platform and are excited to join the add-on catalog. Try it out and let us know what you think.