They are talking about compressed geometry, not pixels. This is more similar to alembic and other geometry streaming tech https://en.wikipedia.org/wiki/Alembic_(computer_graphics)

There is one out there from 5 years ago or so that is similar to Google's Seurat but for animated stuff, I think pre-baking triangle culling for different views within a limited volume. I can't remember the name of it, from the details I remember (there was a realistic orangutan or something like that rendered with fur) I should be able to find it on Google, but Google search has become degraded recently.