Confusing mysterious rotate buttons - lossy or lossless?

Ask for help and post your question on how to use XnView MP.

Moderators: XnTriq, helmut, xnview

user123
Posts: 10
Joined: Tue Jul 26, 2022 3:08 pm

Confusing mysterious rotate buttons - lossy or lossless?

Post by user123 »

What is the difference between these two rotation options?

Image

Are buttons at [1] lossy rotation ? Or are they both lossless rotation?

Pop up doesn't say what kind of rotation those buttons are. But Icons are different - one has file icon in it, the other one one doesn't..
Image

If they are lossy, there should be warning added about changing of file.. Because I accidentally have rotated several photos using rotate option 1.

...
I noticed that subsampling has been changed after using the 1st rotate option. From YCbCr4:2:2 to YCbCr4:4:0.
User avatar
xnview
Author of XnView
Posts: 39834
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: Confusing mysterious rotate buttons - lossy or lossless?

Post by xnview »

Buttons [1] use Settings>Browser>Misc
Pierre.