[DonHopkins]

"Once Upon a Time" (2011-2018, with Robert Carlyle as Rumplestiltskin!) was shot on virtual chroma-keyed sets with real time integrated pipeline tools to preview how it would look.

https://en.wikipedia.org/wiki/Once_Upon_a_Time_(TV_series)

The tech behind Once Upon a Time’s Frozen adventures

https://www.fxguide.com/fxfeatured/the-tech-behind-once-upon...

Once Upon a Time” TV Series VFX Breakdown

https://web.archive.org/web/20180623020817/http://www.animat...