NConvert EPS->PNG : DPI question

Bingo · Post by **Bingo** » Fri Sep 10, 2004 7:13 am

Hello !

It is my second try with nconvert to automate eps to png conversion.
The first time, I had problem with the transparent colors in the EPS not being converted to white in the PNG, buit to a more or less gray color.
I want to give this a second try (imagemagick's mogrify is just too sloooooow), but now I just can't find a way to specify the DPI for the output !
Inputs are in EPS format, so outputting without a DPI value doesn't make sense !
I tried :
nconvert -out png -dpi 150 toto.eps
nconvert -out ong -dpi 10 toto.eps
nconvert -out png toto.eps
and all with the same result ! The dpi value doesn't change the size of my PNG !
What am I doing wrong ?

Thanks a lot !

Arnaud

Bingo · Post by **Bingo** » Fri Sep 10, 2004 7:28 am

OK I have some hints !
The eps is recognized as a tiff I think

C:\temp>nconvert -v -out png -dpi 50 toto.eps
** NCONVERT v4.22 (c) 1991-2004 Pierre-E Gougelet (Jul 7 2004/09:58:01) **
Version for Windows NT/9x/2000 (All rights reserved)
** This is a freeware software (for non commercial use)

A TIFF (RGB) - Rle was recognized : toto.eps
Width:1192 Height:1875 with 16777216 colors
Nplanes : 1 Bitscount : 24
Bytes Per Plane : 3576
xdpi : 36 ydpi : 36
A PiNG was writen : toto.png
Width:1192 Height:1875 with 16777216 colors

Conversion of toto.eps into toto.png OK

When I try to force input to eps :

C:\>nconvert -v -out png -in eps -dpi 50 toto.eps
** NCONVERT v4.22 (c) 1991-2004 Pierre-E Gougelet (Jul 7 2004/09:58:01) **
Version for Windows NT/9x/2000 (All rights reserved)
** This is a freeware software (for non commercial use)

Error: Don't know how to read this picture (toto.eps)

I am quite puzzled now ....

Post by **xnview** » Fri Sep 10, 2004 9:38 am

Bingo wrote:OK I have some hints !
The eps is recognized as a tiff I think

Yes, your file seems to be a TIFF file. Are you sure that it's an EPS?
Or EPS with TIFF preview??
Pierre.

Guest · Post by **Guest** » Fri Sep 10, 2004 9:46 am

xnview wrote:
Bingo wrote:OK I have some hints !
The eps is recognized as a tiff I think
Yes, your file seems to be a TIFF file. Are you sure that it's an EPS?
Or EPS with TIFF preview??
Pierre.

Yes, it is an EPS with a TIFF preview.
But I think I can't help that ! It is generated automatically by another software...

NB : I used the same EPS, when I first tried nconvert, and this did not happen...

Bingo · Post by **Bingo** » Fri Sep 10, 2004 3:00 pm

Oups sorry, I was not logged in. The last post was from me

Post by **xnview** » Fri Sep 10, 2004 3:16 pm

Bingo wrote:Oups sorry, I was not logged in. The last post was from me

Is it possible to send me the file?
Pierre.

Guest · Post by **Guest** » Fri Sep 10, 2004 4:41 pm

Sure it is !
But it is a 15MB file

I can upload it on an ftp if you want.

Bingo · Post by **Bingo** » Fri Sep 10, 2004 4:42 pm

Anonymous wrote:Sure it is !
But it is a 15MB file
I can upload it on an ftp if you want.

Ooops, that was me again

Post by **xnview** » Fri Sep 10, 2004 4:48 pm

Anonymous wrote:Sure it is !
But it is a 15MB file
I can upload it on an ftp if you want.

Yes please.
Pierre.

Bingo · Post by **Bingo** » Tue Sep 14, 2004 11:53 am

xnview wrote:
Anonymous wrote:Sure it is !
But it is a 15MB file
I can upload it on an ftp if you want.
Yes please.
Pierre.

Pierre, did you find something special with my file ?

Post by **xnview** » Tue Sep 14, 2004 2:15 pm

Bingo wrote:Pierre, did you find something special with my file ?

i have tested, and here is my result with NConvert v4.22
nconvert -dpi 10 -out jpeg -o test.jpg test.eps
The result file is 330x520
nconvert -dpi 50 -out jpeg -o test.jpg test.eps
The result file is 1654x2603

Code: Select all

** NCONVERT v4.22 (c) 1991-2004 Pierre-E Gougelet (Jul  7 2004/09:58:01) **
        Version for Windows NT/9x/2000  (All rights reserved)
** This is a freeware software (for non commercial use)
A Encapsuled Postscript (RGB) was recognized : toto.eps
    Width:330 Height:520 with 16777216 colors
    Nplanes : 1      Bitscount : 24
    Bytes Per Plane : 990
    xdpi : 10         ydpi : 10
A Jpeg was writen : test.jpg
    Width:330 Height:520 with 16777216 colors

Are you sure to have installed ghostscript?
Could you try again, please?
Pierre.

Bingo · Post by **Bingo** » Tue Sep 14, 2004 2:19 pm

xnview wrote:Are you sure to have installed ghostscript?

I think I am going to burry myself deep underground !
Sorry for the work it gave you, Pierre !