Learn how to say Rotoscoping correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word rotoscope:
a device which projects and enlarges individual frames of filmed live action to permit them to be used to create cartoon animation and composite film sequences.
a computer application which combines live action and other images in a film.
transfer (an image from live action film) into another film sequence using a rotoscope:
the gulls were filmed from a cliff top and rotoscoped into the shot
1950s: origin obscure; perhaps the same word as 19th-century rotascope, denoting a kind of gyroscope