Converting georeferenced .png files to .ecw using IrfanView

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Is there anyway I can preserve image georeferencing information after processing or converting the image via IrfanView? I have a couple of .png files with spatial reference and I'm trying to save them as ecw images. Unfortunately this process destroys the spatial reference vital for using the images in GIS software. If there was a way around this problem it would be a great help. Thanks.

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I would recommend using gdal_translate to handle all your geospatial translation needs.

Assuming that you have a PNG with a world file associated then you can easily convert to ecw (providing that the propitiatory ecw driver is compiled in).