ECW picture format is often used for export of maps and other GIS related files, so kmz to ecw conversion is most likely possible. Your best bet is to use some of the advanced GIS solutions like ArcGIS, but perhaps some 3rd party converters may be also capable of converting kmz to ecw.
Convert Compressed Keyhole Markup Language (Google Earth) data to Enhanced Compressed Wavelet image format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert kmz to ecw on Windows
A group of GIS (geographic information system) applications
Convert from kmz file format
|Yes, ArcGIS supports ecw file conversion as a target file type.||No||No||No||No||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.