[gdal-dev] Bigger file size from 64-bit than 32-bit

Jukka Rahkonen jukka.rahkonen at mmmtike.fi
Thu Jan 16 05:52:37 PST 2014


What could be the reason that Windows 64-bit gdal_translate makes many times
bigger jpeg compressed tiff files than 32-bit build? I have not made a
thorough analysis but I feel that this happens only with B/W images.

My command is simple
gdal_translate -of GTiff -co tiled=yes -co compress=jpeg 
FLPIS_K003412.jp2 64bit.tif

Samples can be downloaded from

http://latuviitta.org/downloads/FLPIS_K003412.jp2 (18 MB, original JP2)
http://latuviitta.org/downloads/gdal_translate_32bit.TIF (9.6 MB)
http://latuviitta.org/downloads/gdal_translate_64bit.tif (57 MB)

Builds I use are specially made by Tamas and I can ask for details if
someone gives a hint about what to ask.

-Jukka Rahkonen-

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