Playblast is overwriting previously rendered files... 🙈😭

Question

Ok, I discovered something today (and I'm quite new to rendering in Blender).
I have rendered a long animation to EXR files, but then I made some small adjustments at the end and wanted to create a 'playblast', but it used the same output folder and file format, so it overwrites the EXR files I have rendered (which took several hours).
Shouldn't there be a separate output folder/file setting for playblasts? I don't typically want EXR for playblasts, but changing output settings is easy to forget.

There is an option to not overwrite files, but what does it do if you create a long cycles render? Does it give a warning or does it render (for hours) without saving? Do you have any experience or tips?

Is there any way to handle this better, built in workflows, or addons?

Answer 1 · 2026-03-09T14:12:46Z

Martin Bergwerf replied March 9, 2026 2:12pm

HI Markus,

This is how we learn😉

If you disable Overwrite, Blender will not Render the Image Sequence, if it's already Rendered in the Output Folder, so you won't lose anything.

You'll have to pay attention when Rendering and it's a good idea to keep an eye on the first few Frames, to see if everything goes as planned.

Blender does exactly what you tell it to do, so you'll have to be careful with what you ask.

There might be Addons that do what you want, but I don't know if and which.

1 love

Answer 2 · 2026-03-09T18:16:10Z

Omar Domenech replied March 9, 2026 6:16pm

Yeah stuff like this happens a lot, not only when rendering, but in like every stage of the pipeline and no matter the 3D package, it's just that these software's are so huge and have so many functionalities, it's hard to keep safeguards everywhere, so it's most of the time on us to be mindful of things. As Martin said, we learn the hard way.