[OZAPRS] .ecw file format

[Mark Dods]

vk3xci at aanet.com.au wrote:
> G'day all,
> 
> Fiddling with IrfanView here at work, converting some .eps files. Notice
> that it handles .ecw format. it may be possible to convert the
oziexplorer
> maps? A question would then arise as to copyright of the original
material
> of course.
> 
> We would also lose a few of the advantages of the ECW format. See Here.
> http://en.wikipedia.org/wiki/ECW_(file_format)
> 
> Here for IrfanView
> http://www.irfanview.com/
> 
> 
> I'm QRT at the moment, moving house for the third time in 2 years, so
> can't easily follow it up. Maybe someone else could run with it 'till I
> get organised again?

I've had a look at this previously and found that although Irfanview can
preview 
.ecw files as large as 573 MB, it has trouble opening one of even 9997 kB.
A 
5887 kB file opened OK, but scrolling it was excruciatingly slow.

I was however able to use Irfanview to produce a 17 MB .jpg from the 9997
kB 
.ecw which I was able to open in Paint Shop Pro and reduce to 4.9 MB with
.jpg 
compression and still have a decent looking map.

I've been meaning to try on of the half gig .ecw files. I'll give it a go
and 
let you know what happens.

-- 
Regards,

Mark A. Dods, VK3XMU, madods at optusnet.com.au
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