[Gdal-dev] ecw-compressing >500MB files

[Brent Fraser]

Ken,

  Sounds like the gdal_translate delivered with FWTools does not use the
GPL'ed ECW SDK yet.    That's the error I got when I tried to compress > 500
mb with the old ECW library.

The unlimited ECW SDK can be compiled into gdal_translate (on Windows
anyways, I think there may be a few bugs when running on *nix ) if you're
into compiling...

Brent Fraser


----- Original Message ----- 
From: "Ken Boss" <Ken.Boss at dnr.state.mn.us>
To: <gdal-dev at xserve.flids.com>
Sent: Thursday, May 12, 2005 4:07 PM
Subject: [Gdal-dev] ecw-compressing >500MB files


> Under FWTools 0.9.8, I can successfully use gdal_translate to generate
> an ECW output from a 400 MB input file.  If I try to do the same with a
> 750 MB input, however, I get:
>
> gdal_translate -of ECW -co target=95 two_tiles.tif two_tiles.ecw
> Input file size is 18988, 14016
> 0.100 - done.
> ERROR 4: `d:\ken_mrsid\test_tiles\two_tiles.ecw' does not exist in the
> file syst
> em,
> and is not recognised as a supported dataset name.
>
> I'm guessing this might owe to input file size limitations, but looking
> at the ECW 3.1 SDK page at http://www.ermapper.com/ecw/ and the price
> list at http://www.ermapper.com/document/doc.aspx?doc_id=54, I'm left
> with the distinct impression that the free GPL-style license for the SDK
> (surely this is what gdal uses?) provides unlimited compression.
>
> Can anybody clarify this for me?
>
> Thanks,
>
> Ken Boss
> _______________________________________________
> Gdal-dev mailing list
> Gdal-dev at xserve.flids.com
> http://xserve.flids.com/mailman/listinfo/gdal-dev