[MS4W-Users] ECW performance and licensing questions

Mark Volz MarkVolz at co.lyon.mn.us
Mon Aug 10 16:50:25 EDT 2020


I am trying to figure out if it might be worthwhile to consider using ECW files instead of MrSid files.  I am wondering if ECW performs better than MrSID.  In addition, I am curious if there is any licensing restrictions.  When I look at gdal.org the documentation https://gdal.org/drivers/raster/ecw.html implies that we need a license to use ECW on a server.  However in the MS4W documentation https://ms4w.com/README_INSTALL.html we can enable ECW by moving a file around.  Perhaps the version packed with MS4W is old enough that there are no license concerns?

Thank You!

Mark Volz

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