Reprojecting a layer using gdaltindex

[Frederico Lucca]

Hello list,

Can I reproject a image that is inside a layer using tileindex?
My problem is that I need to show a ECW that is in Corrego Alegre Datum.
First of all I tried to use
PROJECTION
   "init=epsg:4225"
END
without success.
Than I tried to use gdalwarp to convert it to WGS84 that is my map Datum,
but I can't write ECW format, why not?
So, the only solution I found is convert using gdalwarp exporting as GTiff,
but the image size is very large.

I have many photos and want to use only a layer if is possible.
There is a solution?

Thanks,

Fred

-- 
"Everything under the sun is in tune
But the sun is eclipsed by the moon"
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