[gdal-dev] JPEG compression in TIF doesn't work

Frank Warmerdam warmerdam at pobox.com
Fri Dec 19 14:22:56 EST 2008

Smith, Michael wrote:
> I have an 8-bit tif aerial photo, when I try to compress it with JPEG
> compression in any of the following examples:
> gdal_translate -ot Byte -of GTiff -co "COMPRESS=JPEG" -co
> "JPEG_QUALITY=100" allagash-lake.tif test_jpeg100_tif.tif
> gdal_translate -ot Byte -of GTiff -co "COMPRESS=JPEG" -co
> "JPEG_QUALITY=20" allagash-lake.tif test_jpeg20_tif.tif
> gdal_translate -ot Byte -of GTiff -co "COMPRESS=JPEG" allagash-lake.tif
> test_jpeg_tif.tif
> I get the error message:
> Warning 1: JPEGLib:Application transferred too many scanlines
> And there is a small part at the bottom where the rows are all value 0
> (and they shouldn't be).  Looks like it skips the last 11 rows and sets
> them all to 0 (in an image that is 9728c x 13963r)


What is the size of your input image in pixels and lines?

What does the gdalinfo report on the output file look like?

Best regards,
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent

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