PNG or MLT

Hi I make 3D animations in blender and then use them directly in the video project as “series of PNG images” or I first put this animation in Shotcut - save and then insert in the video project " open MLT as a shot… " The result is the same and since I insert these files into projects repeatedly I don’t care which method I use. The question is: which of the methods used is more friendly, more suitable for Shotcut? Thank you for the answer.

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