Strange thumbnail quality problem

herr_k. · Post by **herr_k.** » Mon Feb 25, 2008 12:20 pm

i am using 1921,
i delete the dbcache,
i am entering a pix-folder,
the thumbs are build,
looking like this:

i click on a picture to view it,
i click back - the view switches again to the thumbs,
the thumbs look still like on the snapshot above.
i enter another folder,
i enter again back to the first folder above,
the thumbs look like this:

??
i rebuild the thumbs, they look like the first snapshot,
move to another folder, move back and again the same (snap2)..
happens only moving back and forth between folders, not between picture/folder..
anybody an idea?

Post by **xnview** » Mon Feb 25, 2008 4:31 pm

herr_k. wrote:i am using 1921,
i delete the dbcache,
i am entering a pix-folder,
the thumbs are build,
looking like this:
i click on a picture to view it,
i click back - the view switches again to the thumbs,
the thumbs look still like on the snapshot above.
i enter another folder,
i enter again back to the first folder above,
the thumbs look like this:
??
i rebuild the thumbs, they look like the first snapshot,
move to another folder, move back and again the same (snap2)..
happens only moving back and forth between folders, not between picture/folder..
anybody an idea?

I think that you use lossy compression for thumbnail cache

herr_k. · Post by **herr_k.** » Mon Feb 25, 2008 7:28 pm

but that doesnt explain why the thumbnails have way better quality in the first snapshot?!

Post by **xnview** » Mon Feb 25, 2008 7:29 pm

herr_k. wrote:but that doesnt explain why the thumbnails have way better quality in the first snapshot?!

On the second pass, thumbnail are loaded from cache (jpeg)

herr_k. · Post by **herr_k.** » Mon Feb 25, 2008 7:36 pm

jes, but i still dont get it,
so xnview is converting 2 times when building thumbnails,
first time for viewing directly and then again for saving?
wouldnt it be faster then to convert directly to the saving thumbnail quality?

Post by **xnview** » Tue Feb 26, 2008 7:32 am

herr_k. wrote:jes, but i still dont get it,
so xnview is converting 2 times when building thumbnails,
first time for viewing directly and then again for saving?
wouldnt it be faster then to convert directly to the saving thumbnail quality?

Not exactly that. Xnview creates the thumbnail, shows it, and saves it in cache (compression)

XnView Software

Strange thumbnail quality problem

Strange thumbnail quality problem

Re: strange thumbnail quality problem