How to downscale from 4k to 1080P I have a video in 4k that i would like to downscale to 1080p. What i want to do is having the video with the same quality and carachteristics as the original but at 1080p.

I have tried the following:

1.- changing the output resolution to 1080p.
2.- stablished the "Percentage scale for render resolution" to 100%.
3.- Output: FFmepg
4.- Encoding:
       - output quality: Losless

the problem is that I ended up with a file with a size of 8 GB when the original video file 2GB.

Any help, please?
You have to use a compression like H264. Your 4k Video has also a compression on it and that the reason why it is smaller than your 1080 video.