Do they have the same Pixel Aspect Ratio?
Thanks for reaching out. When we change the resolution of the file, we compress it which makes it lose information. Hence, it is normal if we observe some change in the preview. Having said that, I'm not denying that there could be a possible difference which you were not expecting.
In addition to the question asked by @Peru Bob, I'd to see the export settings that you are selecting. Could you share a screenshot?
We're here to help.
Match source High bit rate, and I'm changing the size in the Basic video settings.
What I need to do is a Uncompressed Quicktime AVI/MOV.
Until now, I was doing my videos in (1920 X 1080) and reduced them in after effect at (448 X 252) and everythings was fine, but it's time consuming when i'm having a bunch of videos.
I Used to do this in Media Encoder 1 or 2 years ago and it was going great.