XnView Software

Posted: **Wed Jul 24, 2019 5:21 pm**

There are requests from time to time to be able to convert images only if a specified file parameter condition is satisfied, for example only if 'pixel height is greater than 720px' or only if 'filesize is greater than 1000kb'.

A recent thread Pull out image height requested a way to copy a specified image file parameter to a variable, which could then be used in a script. That could have general application, but would require familiarity with a scripting language.

Another possible solution might be to add a new NConvert option to convert an image only if a specified file parameter condition is satisfied; as access to file parameters is already available, that might not be difficult to implement.

Initial support might be for: height | width | filesize set to | greater than | less than .

So maybe something like:

Code: Select all

-convert height_px greater_than 720

Posted: **Fri Jul 26, 2019 2:05 pm**

If this option can be implemented the following notation, or parts of it, might possibly be clearer:

Code: Select all

-only height greater 720

Alternatively the number of arguments could be reduced by using:

Code: Select all

-only_greater height 720

I think this function could be quite useful...

Posted: **Tue Sep 03, 2019 3:51 pm**

will be added in next version

Posted: **Wed Sep 04, 2019 11:44 am**

xnview wrote: ↑Tue Sep 03, 2019 3:51 pm will be added in next version

Thanks for including in NConvert 7.32...

Looks like a small typo in the help file:

Code: Select all

 -greater_than type value  : Process only if arg is less than value: Overwrite existing file
 -less_than type value     : Process only if arg is less than value
       type : height width filesize

First line less -> greater

And is 'Overwrite existing file' in the first line intended??

Posted: **Wed Sep 04, 2019 4:37 pm**

Continued...

Tested - six combinations - all work!

If possible, could the help file indicate that height and width are pixels [pretty obvious] and that the filesize parameter is *bytes* [less obvious but understandable].

Posted: **Thu Sep 05, 2019 5:20 am**

cday wrote: ↑Wed Sep 04, 2019 4:37 pm Continued...

Tested - six combinations - all work!

If possible, could the help file indicate that height and width are pixels [pretty obvious] and that the filesize parameter is *bytes* [less obvious but understandable].

ok

Posted: **Sun May 10, 2020 9:24 pm**

Is there a way of getting "longest" as there is in the resize function?

XnView Software

Request: Option to 'Convert only if specified file parameter condition is satisfied'

Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'

Re: Request: Option to 'Convert only if specified file parameter condition is satisfied'