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-rmeta reduces quality ?
Posted: Wed Sep 03, 2008 7:10 am
by xenry
hello and thanks for the wonderful xnview =)
I am trying to write a simple program that uses nconvert to remove jpeg metadata (exif and so on). So I call nconvert with:
all works fine, the metadata is removed, but the jpeg file is a lot smaller ( as filesize ), about 2-3 times. I was wondering whether after the metadata removal the jpeg is resaved with lower quality? Any suggestions will be appreciated. Thanks in advance =)
Re: -rmeta reduces quality ?
Posted: Wed Sep 03, 2008 7:59 am
by xnview
Yes currently -rmeta doesn't work like clean in xnview, the picture is saved again
Posted: Wed Sep 03, 2008 8:42 am
by xenry
thanks for the answer
so is there any way to access xnview->edit->metadata->remove all metadata externally? or any other workaround for removing metadata without losing quality ?
Posted: Wed Sep 03, 2008 9:36 am
by xnview
I'll add such option in next version
Posted: Wed Sep 03, 2008 9:48 am
by xenry
thanks for the great support !
Posted: Thu Sep 04, 2008 9:31 pm
by DOS386
xnview wrote:I'll add such option in next version
Code: Select all
-jpegtrans op : JPEG lossless transformations
rot90 : Rotate 90 degrees
rot180 : Rotate 180 degrees
rot270 : Rotate 270 degrees
exif : Use orientation EXIF tag
vflip : Flip vertical
hflip : Flip horizontal
-jpegcrop x y w h : JPEG lossless crop
-rmeta : Remove Metadata (EXIF/IPTC/...)
The bottom line is not yet lossless in 5.00 ...
Re: -rmeta reduces quality ?
Posted: Tue Feb 05, 2013 2:51 pm
by dadaniel
And it's still not lossless
