XnView Software

How convert to Jpeg2000 format?

Anonymous wrote:How convert to Jpeg2000 format?

Code: Select all

nconvert.exe -out jp2 Picture32.png
Bad output format 'jp2'

Do you have the jpeg2000 plugin?

do i need one!?


ok i copy/paste plugins dir from xnview so it converts now.
But i was unable to get 32bit jpeg2000 image.

how convert to 32bit jpeg2000?

Anonymous wrote:do i need one!?


ok i copy/paste plugins dir from xnview so it converts now.
But i was unable to get 32bit jpeg2000 image.

how convert to 32bit jpeg2000?

32bits is not possible with Jasper plugin, try the lurawave one

nconvert.exe -v -out lwfjp2 321Go_png.png
gives 24bit jp2 image

nconvert.exe -v -out lwf 321Go_png.png
gives some rubish image


actual 32bit png:



nconvert.exe -v -out lwf 321Go_png.png



btw what option for jp2 compression quality?

xnview wrote: 32bits is not possible with Jasper plugin, try the lurawave one

hmm... actualy after repeated tests i noticed that JasPer plugin converts to 32bit, and i was able to convert back to png and got correct alpha,
but lurawave compressed without alpha.

noticed that current JasPer Version is 1.900, nconvert use v1.701.

so what option is for jp2 compression quality?

Anonymous wrote: noticed that current JasPer Version is 1.900, nconvert use v1.701.

Right, i'll update

so what option is for jp2 compression quality?

Quality

I tried to convert dds to jpeg2000 with alpha plane using xnview but i get a DXT1 without any alpha plane

I tried to use the nconvert using the parameter

nconvert.exe -v -out lwfjp2

and

nconvert.exe -v -out lwf

And i get

Bad output format

I copy the dll from xnview too but i get the same error
I'm using the 5.02 version and i don't see any reference about jpeg2000
Yes i have the plugins

Maybe in the 5.02 this plugins/options are gone?

Thanks !!!

Me wrote: I copy the dll from xnview too but i get the same error
I'm using the 5.02 version and i don't see any reference about jpeg2000
Yes i have the plugins

The dll's are in Plugins folder?

Thanks a silly mistake, and what a about to get the mipmaps of the DDS files?
Actually i only can convert to DXT1 with 1 mipmap?
Thanks!