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<div dir="ltr"><font color="#000000" size="2" face="Tahoma">Hi</font></div>
<div dir="ltr"><font face="tahoma">I'm having problems creating a jpeg compressed tif with ARGB pixel format with gdal_translate.</font></div>
<div dir="ltr"><font face="tahoma">I tried the command </font></div>
<div dir="ltr"><font face="tahoma">gdal_translate pngWithAlpha.png 3.tif -b 1 -b 2 -b 3 -mask 4 -co alpha=yes -co COMPRESS=JPEG --config GDAL_TIFF_INTERNAL_MASK YES</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">as it appears in the gdal_translate documentation, but the image I'm getting doesn't have an alpha channel.</font></div>
<div dir="ltr"><font face="tahoma">c:\Users\Atlas\Pictures>gdalinfo 3.tif<br>
Driver: GTiff/GeoTIFF<br>
Files: 3.tif<br>
Size is 480, 360<br>
Coordinate System is `'<br>
Image Structure Metadata:<br>
COMPRESSION=JPEG<br>
INTERLEAVE=PIXEL<br>
Corner Coordinates:<br>
Upper Left ( 0.0, 0.0)<br>
Lower Left ( 0.0, 360.0)<br>
Upper Right ( 480.0, 0.0)<br>
Lower Right ( 480.0, 360.0)<br>
Center ( 240.0, 180.0)<br>
Band 1 Block=480x16 Type=Byte, ColorInterp=Red<br>
Mask Flags: PER_DATASET<br>
Band 2 Block=480x16 Type=Byte, ColorInterp=Green<br>
Mask Flags: PER_DATASET<br>
Band 3 Block=480x16 Type=Byte, ColorInterp=Blue<br>
Mask Flags: PER_DATASET</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">I also tried without the -mask option, in which case I get errors:</font></div>
<div dir="ltr"><font face="tahoma">ERROR 1: JPEGLib:Bogus input colorspace<br>
ERROR 1: WriteEncodedTile/Strip() failed.</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">I'm using gdal 1.9.1 x64 on windows 7 64 bit. </font>
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<div dir="ltr"> </div>
<div dir="ltr"><font face="tahoma">Is there another way to do this, or is it a known limitation of the tiff driver?</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">Thanks </font></div>
<div dir="ltr"><font face="tahoma">Yehiyam</font></div>
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