The cinematographer for HBO's upcoming Harry Potter series, Adriano Goldman, has described the production process as 'brutal' due to the strict scheduling constraints imposed on young actors.Filming requires rapid shooting sessions, which compromise quality, as the cast members are limited in their screen time.This necessitates pre-shooting scenes during school hours, with lead actors often available for only an hour and a half per session.Warner Bros.has established a temporary school at Leavesden Studios to accommodate child actors, which will operate for a decade and handle up to 600 pupils during large crowd scenes.HBO boss Casey Bloys acknowledged the difficulty of maintaining the series' timeline without visible aging of the young cast.The first trailer for the series sparked mixed reactions, with debates over its necessity.The cast includes John Lithgow as Albus Dumbledore and Nick Frost as Rubeus Hagrid, alongside new actors facing backlash over J.K.Rowling's anti-trans views.Despite controversies, the series is set to premiere on HBO and HBO Max on Christmas Day.