Runtime can be entered at both the series and episode level. For shows with variable runtime per episode, you should enter the value for each episode separately and leave the runtime on the series level blank. For shows with a consistent runtime, it's better to enter a single value on the series level. Runtimes can then be backfilled to the episode periodically.
Reply by raze464
on February 24, 2025 at 1:49 PM
Because episode runtimes are not consistent:
https://www.themoviedb.org/bible/tv#59f7403f9251416e7100002e