suggestion: Speed up for rotating maybe possible

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xntest
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suggestion: Speed up for rotating maybe possible

Post by xntest » Sun Jul 27, 2008 1:58 pm

Hello

I often rotate my JPGs depending on EXIF data and i figure out that nconvert is not faster if it does not rotate a picture than the cases it rotates pictures.

Maybe nconvert does something that is not neccesary if it has not rotate a picture.
Pierre, maybe you can speed up nconvert for the case that it has not to rotate pictures.

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xnview
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Re: suggestion: Speed up for rotating maybe possible

Post by xnview » Mon Jul 28, 2008 7:09 am

Ok right
Pierre.

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xnview
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Re: suggestion: Speed up for rotating maybe possible

Post by xnview » Thu Sep 04, 2008 7:00 am

Do you use "-jpegtrans exif"?
Pierre.

xntest
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Post by xntest » Thu Sep 04, 2008 8:19 am

Yes.

I use:

-jpegtrans exif -keepfiledate
Chris

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xnview
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Post by xnview » Thu Sep 04, 2008 12:49 pm

Could you send me your email by PM to send you a test version?
Pierre.

xntest
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Post by xntest » Thu Sep 04, 2008 10:53 pm

I've done.
Chris

xntest
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Post by xntest » Fri Sep 05, 2008 2:28 pm

Hello Pierre

Thanks for the testversion but it is not faster.

I tested it with 20 pictures with 48 MB size. All pictures are from my digicam and must be rotated.
It needs 15 seconds with your testversion.
After pictures were rotated I put them to nconvert again and it took 15 seconds again although no pictures had to be rotated.


I tested it with the version of nconvert that I'm using usually. It's version 4.79. The behaviour of version 4.79 is the same and it takes 15 seconds also.


BTW:
First I tried to generate me some pictures that are noch rotated upside.
For that purpose I rotated pictueres with xnview an save them. After that nconvert did not rotate them back.
Then I unchecked the flag "keep EXIF data" in the options menu from xnview while saving jpeg.
After that all EXIF data were lost and nconvert couldn't rotate pictures upside.

Is it possible to rotate pictures with xnview and keep EXIF data but change the orientation information in EXIF?
Chris

xntest
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Post by xntest » Fri Sep 05, 2008 4:14 pm

Yeahh!!!


Pierre, the new version rocks :-)))


I have tested the same pictures as before.
20 pictures with 48 MB were rotated in 15 seconds.

Then I have put the same pictures to nconvert again and it took only 3 seconds :-)


Can I use this testversion for all my pictures or is it a non stable version or something with risk functions?

Should I wait until the new feature is integrated into an official version?


Thanks a lot!
Chris

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Post by xnview » Sat Sep 06, 2008 3:21 pm

xntest wrote: Can I use this testversion for all my pictures or is it a non stable version or something with risk functions?
You can use it, xnview 1.95 & nconvert 5.02 will be available in 1 week for beta testing
Pierre.

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