How can I remove black bars from sequencer cinematics?

I can’t find any answers to this and it seems like there’s an option that was removed from later versions of the engine. The answer found here, is for matinee and the option is no longer available, or has been moved:

I don’t see any boolean called “Constrain Aspect Ratio” to toggle. I’m trying to play a scene that works for any aspect ratio and can’t figure out how.

Any ideas?
Thanks!

Unfortunately, it’s there, but it’s hidden from the details panel. I don’t know of any workarounds that don’t involve modifying code. If you can modify code, you can just remove this segment from CineCameraComponent:

HideCategories = (CameraSettings)

Cine camera derive from regular cameras. The property is on the regular camera but the cine camera hides all the properties in the “Camera Settings” group in favor of the “Current Camera Settings” group. Unfortunately this “Constrain Aspect Ratio” toggle is in the “Camera Settings” group.

This should be fixed in code so that it only hides the irrelevant settings, like aspect ratio, which for the cine cameras is a value that is determined by the filmback settings. I’ve filed a bug and you can track it here once it comes online.

yeah, that’s a bit of a downer. I’ve switched my scene back to using CameraActors instead of CineCameraActors in the meantime. Sucks to have those bars showing up; so old school it shouldn’t be the standard, imo.

thanks for logging the issue!

I see this has been fixed in 4.20. Nice!