giant thumbnail cache

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obelisk
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Joined: Fri Jan 09, 2009 9:54 am

giant thumbnail cache

Post by obelisk »

I have some folders with jpg files. thumbnail cache set to jpg lossy - low qual

the size shown is:

images size
11 307kb
14 800kb
17 1017kb


Why is this? thumbnails are 200x200
My other pc 11 images would take 80kb and it's using jpg lossy - high qual.
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bmezenga
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Post by bmezenga »

Hi obelisk;

Your observation may be related to mine.

This discussion was continued by e-mail, so the result was:
- XnView copy all metadata info to its cache. This means: thumbnail, exif and makernotes. This behavior can´t be configured yet.

In my case, I found that the Pentax K100D makernotes are a lot bigger than my old Lumix LZ5 and I just stopped using the cache feature.

Disabling the cache didn´t had any negative impact because XnView can read the thumbnail embedded in the jpg and pef files from my camera.
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xnview
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Post by xnview »

bmezenga wrote: This discussion was continued by e-mail, so the result was:
- XnView copy all metadata info to its cache. This means: thumbnail, exif and makernotes. This behavior can´t be configured yet.
No not all, exif thumbnail is not saved in DB. I need iptc & exif for thumbnail labels...
Pierre.
obelisk
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Post by obelisk »

yes it is a pentax k10d and ist*D jpgs giving the large caches
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xnview
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Post by xnview »

obelisk wrote:yes it is a pentax k10d and ist*D jpgs giving the large caches
Could you send me samples to check?
Pierre.
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xnview
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Post by xnview »

Ok, the problem is size of makernotes...
Pierre.
obelisk
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Post by obelisk »

What is the solution here? I have a 920MB cache now, at low qual jpeg
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bmezenga
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Re: giant thumbnail cache

Post by bmezenga »

Hi Pierre,

Thumbnail cache is working as expected for Pentax raw and camera jpeg files.
i.e.: it doesn´t store Exif makernotes in the DB.

However, jpeg files created by Pentax Photo Laboratory v3.61 are different enough to fool your actual filter.

I just sent you some samples.
Last edited by bmezenga on Thu Oct 01, 2009 9:53 pm, edited 1 time in total.
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xnview
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Re: giant thumbnail cache

Post by xnview »

bmezenga wrote: However, jpeg files created by Pentax Photo Laboratory v3.61 are different enough to fool your actual filter.
I just sent you some samples.
Ok, i'll check
Pierre.
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