High speed thumbs

[Alexey]

I have a problem with "high speed" thumbnails:



switching to "fast" solves the problem.



And here are the settings as they may help. I have been ignoring this for a while as I thought clearing cash will help. But it didn't.

[admin]

Seems to be related to EXIF-rotated images. Alas, I cannot repro it here.

[Alexey]

Here are the folders with 1 file each if you want to reproduce. I tried it with all speeds. Only high spreed generates this mess.

https://dl.dropboxusercontent.com/u/101 ... thumbs.zip

[admin]

I tried your pics: No problem here.

[Alexey]

Ok, I'll just switch back to Fast then.

[admin]

Here is a test. Select one of the rotated JPG files and run this line through the address bar:

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echo get("exif", 0x112);

It should return "6" for the files you have sent me (e.g. 2016-01-24 09.14.11.jpg).

[Alexey]

It's 6 for both rotated images I sent and 1 for non-rotated.

[admin]

OK, I hoped it was something else.

[Alexey]

Could it be auto-rotate option being turned on. So it auto-rotate twice - once for photo and second time for the thumb to be used on folder?

EDIT: It looks like High Speed auto-rotates thumbs even if this option is not set. At least that's how it works for me.

[admin]

Yes, that might be indeed the solution! On my system High Speed does NOT auto-rotate.

I will find a way now...

[admin]

I was on the wrong track. It's the other way round. High Speed *always* auto-rotates (also here); so XY de-rotates them if auto-rotate is off. There is not double rotation.

So this does not explain your issue. Still totally weird.

[Alexey]

Confusing. Probably I should mention I use Picasa to organize my photo archive. But I guess if it made any changes to EXIF of photos you would get the same result with my photos so it's something else. I can't think of any other program that may have influence on my photos or system behavior.

[Alexey]

I tested it on my other computer. Result is the same, probably cause it uses almost the same list of programs.

Update: I tried

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::freshhere;

to see if that somehow related to any XY settings but no changes. Buggy rotation.

[ColdNose]

Hi, came across this old thread and note that I experience the exact same thing (v18.0). I tried many different config options to no avail. I've stopped using high-speed thumbs (now use "crisp") and all is well. Strange.

[admin]

Thanks for the info. Yes, Windows systems are complex. 2 machines, 2 solutions.