Used Media encoder and set out put how you wish.
Suggest you might want to post more descriptively in the future.
You are changing the shape of the image. Something bad is bound to happen. It is bad enough that you want to scale it down.
If you want to export a ratio of 1.333 (4:3) then I suggest that you capture a ratio of 1.333
I cant capture it at my end, just have a pdf video which is 1434x958 where i need to to do some edit, and have to give the output of a 640x480. which will looks good. But the output is blurry/fussy and text is breaking. Which setting i need to follow to get the better output? Thanks for your help.