Hi Keswick @kchow ,
If you have Rendered out an animation with Motion Blur in images (for instance PNG’s), that Motion Blur already exists in those images (just look at 1 of those images).
When then Rendering that Image Sequence to (for instance) an MP4 (which mostly comes down to changing the File Format in the Output Settings from PNG to MP4, after loading the Image Sequence in the VSE)), you don’t need another Motion Blur on top of that. But then again, I don’t think it would be used anyway if you’d (still) had it enabled.
