UHD Copy wrong output size

[gantz]

source is uhd , size (46.5 GB (50,034,442,752 bytes))

I want to create uhd-BD50G. And get output

24.4 GB (26,201,750,368 bytes)

[Ashley]

source is uhd , size (46.5 GB (50,034,442,752 bytes))

I want to create uhd-BD50G. And get output

24.4 GB (26,201,750,368 bytes)

The QA team cannot duplicate the issue.

Your log shows "opening folder I:/[COMPLETE]/THE GRINCH_UHD/BDMV/". Do you have the original disc? Please load the disc into DVDFab to copy and see the result.

[gantz]

The QA team cannot duplicate the issue.

Your log shows "opening folder I:/[COMPLETE]/THE GRINCH_UHD/BDMV/". Do you have the original disc? Please load the disc into DVDFab to copy and see the result.

I try to compress this movie with another program. It gets output 26GB like dvdfab.
So I Think this problem come from nVidia. I try to compress with software and get output 36GB as it should be.

I don't have original disc. The source come from "The Grinch 2018 2160p UHD Blu-ray HEVC TrueHD 7.1-BeyondHD"
and I remux it with scenaristUHD. And bring output to compress with dvdfab.