See the UDN for sample project. This is caused by the Editor Python sample not using the UMoviePipelineQueueSubsystem, which (when rendering) blocks the Sequencer from auto-binding to PIE.

The fix will be to reimplement:
UFUNCTION(BlueprintCallable, Category = "Movie Render Pipeline|Rendering")
void RenderQueueWithExecutorInstance(UMoviePipelineExecutorBase* InExecutor);

From the runtime UMoviePipelineQueueEngineSubsystem into UMoviePipelineQueueSubsystem

Steps to Reproduce

Open provided demo project

Open the Level Sequence (there's only one)
Click the top left icon in Sequencer and ensure 'Auto bind to PIE' is CHECKED
Add the level sequence to the Movie Render Queue UI

In the python console, run the following two lines:

import MoviePipelineEditorExample


Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-138236 in the post.

Login to Vote

ComponentUE - Anim - Sequencer
Affects Versions5.0
Target Fix5.0
Fix Commit18522506
Main Commit18522690
Release Commit18522506
CreatedJan 4, 2022
ResolvedJan 5, 2022
UpdatedJan 26, 2023