One sounds like an actual product and the other sounds like an add-on to something else.
"Yahoo Pipes! $7.99 a month with a generous free tier!"
"Mashup Editor included with every Google Cloud subscription above $5/month."
You never want a product to sound like an add-on: Add-ons are low-value and generally used to rent seek off of people who are already locked in. Naming something in a way that it feels like its own standalone product will inspire consumer confidence.
Generic word + descriptor is an easy way to sound like an add-on.
"Video Editor" could be for anything, but is certainly not an independent product.
"Pachi Video Editor" sounds a bit more like its own thing.
"Pachi Cutting Room" is closer to the mark, despite being two words and a company name.
