Blueprint Actor not appearing in Matinee Movie

Development Cinematics & Media
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1

Hi Everyone,

I have recently been recording some promotional footage of my companies game, and have run into some issues with the matinee movie recording functionality.

I have an actor that fades in over time (through blueprint) and it has always worked fine and works fine in PIE with the matinee running from level load.

However, when I render out the matinee as a movie, the actor does not fade in at all.
I am not sure what is causing this, and was wondering if anyone else had run into the same issue?

The only thing that I can thing that it may be is that the actor appears according to a timeline after a short delay. Perhaps Delta Time is distorted during the matinee recording.

Thanks for any help, if I come across a solution I will post it below.

2

Another actor is doing the same. The correlation is that they are both based off the same c++ header file.

3

It turns out the project needed it’s binaries rebuilding but the engine did not realise. I never realised this myself as I always launch through Visual Studio. When you launch through the Epic Games launcher it was actually failing to load the headers that the blueprints relied on, which was clearly the same way the matinee window was loading them.

Anyone who has this issue, delete your binaries folder in the project and relaunch through the .uproject

The binaries will rebuild and, alas, the actors will appear in matinee!