It seems that an unwanted side effect of ticking the banner box (and saving the changes) is that the image gets re-saved with a high compression level.  With one particular front cover the size of the image file went from 186KB to 74KB.  I see similar reductions in size with other cover scans if I change the media banner option.

Although this definitely counts as a change, it also definitely sounds like a bug - why should the image be re-saved (and re-compressed) at all, if one just toggles the media banner option?

if this is what happens when you change the banner setting then remind me never to change the banner setting until this is fixed.

Quoting bbbbb:

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Quoting Ranavalone:

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It seems that an unwanted side effect of ticking the banner box (and saving the changes) is that the image gets re-saved with a high compression level.  With one particular front cover the size of the image file went from 186KB to 74KB.

I'm shocked. Is this true?

Indeed it is.

You can easily verify the behaviour (and restore the image) taking these steps:
- open any profile for editing
- toggle the media banner option for frront or back cover scan
- save changes (obviously no need to contribute the change perceived by DVD Profiler)
- select Online -> Refresh DVD from Invelos -> Preview Changes...
- observe the different sizes between the cover scan in your local database and in the on-line database
- accept the cover scan(s) from the on-line database

I usually change the media banner option from Automatic to Off for Criterion Collection Blu-rays, as they come in custom HD Keep Case with no Blu-ray logo on top.  After that I restore the cover from the on-line database and everything is fine.  I don't see the media banner and I still have exactly the same cover scan as in the on-line database.

I've been aware of this mysterious "change" detected by the DVD Profiler when toggling the Media Banner option for a few weeks, but I never realised at that time what was happening to the cover images. The behaviour just seemed like a minor nuisance.

Only when the color information additions started to pour down in droves from the common database, I saw differences in sizes in my local cover images vs. the cover images coming along with the color information updates.

It was puzzling but I still didn't take the time to connect the dots, as just processing the avalanche of updates has been taking a lot of time.

Thanks to Kathy for bringing this up; this behaviour can be really bothersome for somebody who has their own scans which are not in the common database at all, e.g., because the covers have changed from the original release.

In the interim, try to set the image quality to 100%.

Edit Profile -> Cover Scans -> File -> Adjust Compression.

Quoting Kathy:

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In the interim, try to set the image quality to 100%.

Should this be set at 100%?

JPG compression is always lossy, so more quality is lost every time the JPG file is compressed and saved again. 100% does not mean no compression, just less compression and thus less loss.