Search found 4 matches

by dubiousdawg
Tue Nov 22, 2011 4:07 pm
Forum: NConvert
Topic: jpeg quality bug (png -> jpeg, tiff -> jpeg)
Replies: 6
Views: 2130

Re: jpeg quality bug (png -> jpeg, tiff -> jpeg)

Pierre, is there a way to turn subsampling off completely?
by dubiousdawg
Mon Nov 21, 2011 2:38 pm
Forum: NConvert
Topic: jpeg quality bug (png -> jpeg, tiff -> jpeg)
Replies: 6
Views: 2130

Re: jpeg quality bug (png -> jpeg, tiff -> jpeg)

Thanks for the response, Pierre! It was indeed the subsampling.
by dubiousdawg
Fri Nov 18, 2011 4:17 pm
Forum: NConvert
Topic: jpeg quality bug (png -> jpeg, tiff -> jpeg)
Replies: 6
Views: 2130

Re: jpeg quality bug (png -> jpeg, tiff -> jpeg)

pierre,

thx for the response. after looking into it a bit further, it seems like it was still converting it into a .png without the -out jpeg flag, even though i specified the jpeg extension

however, there are still issues with the jpeg step. they are rather drastic for this particular image. see ...
by dubiousdawg
Thu Nov 17, 2011 6:14 pm
Forum: NConvert
Topic: jpeg quality bug (png -> jpeg, tiff -> jpeg)
Replies: 6
Views: 2130

jpeg quality bug (png -> jpeg, tiff -> jpeg)

In cetain cases, the "-out jpeg" option seems to override the quality option.

When converting png -> jpeg or tiff -> jpeg with "-out jpeg" and "-q 100", nconvert will produce a low quality image with clear jpeg artifacts.