The specifications mentioned in your request refer to specific digital file attributes typically found in authorized digital distribution or physical media:
Jared Harris as Valery Legasov, Stellan Skarsgård as Boris Shcherbina, Emily Watson as Ulana Khomyuk, and Paul Ritter as Anatoly Dyatlov. The specifications mentioned in your request refer to
This indicates a high-definition resolution (1280x720) sourced from a digital stream or rip. While the original master was produced in 4K, 720p remains a common standard for standard HD playback. Stellan Skarsgård as Boris Shcherbina