Frank, Thank you for your help, you can download the files at: http://dev.market-ip.com/B250048_P72_Y2005_S68.tif http://dev.market-ip.com/out.tif I used this command line: gdal_translate -of GTiff -co "TFW=TRUE INTERLEAVE=PIXEL" B250048_P72_Y2005_S68.tif out.tif Hope this can help to point the problem. Regards. Philippe