Hi,
We’ve come across an issue with Movie Render Graphs and setting a custom start and end range.
We have a sequence setup up where we have sub sequences that are all 1 frame long. We are doing this as we want to render out stills. We have tooling that then dynamically adjusts the frame range to select which angle we want to render.
However, we discovered that when setting this to say ranges: 1 - 2 we get this in our output, a weird ghosting of two frames overlayed in the same output file. This is also inconsistent but most ranges that are set 1 frame long can cause this to happen:
In the render preview we can see it briefly blip to another frame before then jumping back to the correct frame, but it seems Unreal writes out the frame with both in the buffer.
We’ve tried turning off Motion blur, didn’t seem to help. We’ve tried changing the file output from EXR to PNG, same issue.
We are now struggling to think of what it could be. Theory might be that Movie Render Graph isn’t sampling the ranges correctly. Unless we are missing a CVAR or something that can save the day.
Attached is a reproduction project. Inside the Sequences folder you can find a Movie Render Queue that then you can render the sequence to reproduce the image above.
MRQGhostingIssue.zip (118.6 KB)
