[gdal-dev] gdal_translate receiving "Warning 6: driver GTiff does not support creation option WEBP_LOSSLESS"

[Marty J. Sullivan]

Hello,

I am attempting to create a COG format GeoTIFF with WEBP_LOSSLESS compression using GDAL.

I have compiled GDAL 3.2.1 from source with libwebp 0.4.2 installed from Debian Buster repos (I’ve also tried with libwebp v1.1.0 installed from source, no difference). When I run the ./configure script before compiling, WEBP support is listed as “Yes”

When I try to create a COG with gdal_translate, and setting QUALITY=100, GDAL returns “Warning 6: driver GTiff does not support creation option WEBP_LOSSLESS”

I would expect that WEBP_LOSSLESS would work because the documentation for the GTiff driver states “WEBP_LOSSLESS=True/False: (GDAL >= 2.4.0 and libwebp >= 0.1.4): By default, lossy compression is used. If set to True, lossless compression will be used.”

Here is the command I am running, it works fine when running with another compression (or choosing QUALITY=99 for WEBP)

gdal_translate -of COG -co COMPRESS=WEBP -co QUALITY=100 -co NUM_THREADS=ALL_CPUS -co RESAMPLING=NEAREST -co OVERVIEW_RESAMPLING=NEAREST -co WARP_RESAMPLING=NEAREST -co OVERVIEWS=AUTO -co TILING_SCHEME=CUSTOM -co ZOOM_LEVEL_STRATEGY=UPPER input.tif output.tif

Thanks for any guidance on getting WEBP_LOSSLESS to work!

Marty Sullivan
Cornell University
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