<meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Thanks Even. Is it true that a recompile from source is necessary to support other drivers, namely the JasPer JP2 option? I haven't been able to find any windows binaries that make that driver available. But perhaps that option only supports three bands as well? I haven't been able to find a definitive answer.</div><div><br></div><div>Thanks again.<br><br><div><br></div></div><div><br>On Nov 26, 2014, at 10:42 AM, Even Rouault-2 [via <a href="http://OSGeo.org" target="_top" rel="nofollow" link="external">OSGeo.org</a>] <<a href="/user/SendEmail.jtp?type=node&node=5175169&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote:<br><br></div><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' type="cite"><div>

        Le mercredi 26 novembre 2014 17:31:34, jplacy2 a écrit :

<div class="shrinkable-quote"><div class='shrinkable-quote'><br>> Hi Folks-

<br>> 

<br>> I'm attempting to generate some 4-band JP2 files using the GDAL 1.11 Win64

> binary acquired from <a href="http://gisinternals.com" target="_top" rel="nofollow" link="external">gisinternals.com</a>.

<br>> 

<br>> I quickly ran into a problem... JP2 driver doesn't like four bands:

<br>> 

<br>> gdal_translate --debug on -of JP2OpenJPEG test.tif test.jp2

> GDAL: GDALOpen(test.tif, this=000000000061CB70) succeeds as GTiff.

<br>> Input file size is 5920, 7700

<br>> ERROR 6: Unable to export files with 4 bands

<br>> GDAL: GDALClose(test.tif, this=000000000061CB70)

<br>> 

<br>> So my question is simple: what options are there for creating multi-band

<br>> jpeg2000's with GDAL on the Windows platform?  I understand there are other

<br>> driver options, but from what I have read, they all require a license

<br>> and/or a recompile of GDAL from the source... the latter is not really in

> my skill set.

</div></div>Jim,

<br><br>This is known as <a href="http://trac.osgeo.org/gdal/ticket/5695" target="_top" rel="nofollow" link="external">http://trac.osgeo.org/gdal/ticket/5695</a>. The restriction has 

<br>been put, because currently the driver couldn't not produce correct RGBA files 

<br>with the alpha band correctly marked as such. I may have the opportunity to 

work on that in a medium term.

<br><br>In the meantime, you could perhaps try the opj_compress utility of openjpeg ( 

<br><a href="https://code.google.com/p/openjpeg/wiki/Downloads?tm=2" target="_top" rel="nofollow" link="external">https://code.google.com/p/openjpeg/wiki/Downloads?tm=2</a> ), but it will likely 

has the same flow as indicated above if you're interested in RGBA images.

<br><br>Even

<br><div class="shrinkable-quote"><div class='shrinkable-quote'><br>> 

<br>> Thanks for any guidance,

<br>> Jim

<br>> 

<br>> 

<br>> 

<br>> 

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