mˈoʊʃən kˈæptʃɚɹ ɪz jˈuːzd wɛn lˈaɪvˈækʃən ˈæktɚz wˈɛɹ spˈɛʃəl sˈuːts ðæt ɐlˈaʊ kəmpjˈuːɾɚz tə kˈɑːpi ðɛɹ mˈuːvmənts ˌɪntʊ sˌiːdʒˈiː kˈæɹɪktɚz.
Motion capture is used when live-action actors wear special suits that allow computers to copy their movements into CG characters.