Right. it fails $ gdal_translate web_mercator.tif web_mercator_jpeg.tif -co COMPRESS=JPEG -co BIGTIFF=YES -of GTIFF -co TILED=YES -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 -oo NUM_THREADS=ALL_CPUS Input file size is 677881, 303664 0.. - estimated remaining time: 00:31:20ERROR 1: LZWDecode:Not enough data at scanline 0 (short 2 bytes)
But if I change -oo with -co, it fails somewhere else: $ gdal_translate web_mercator.tif web_mercator_jpeg_co.tif -co COMPRESS=JPEG -co BIGTIFF=YES -of GTIFF -co TILED=YES -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 -co NUM_THREADS=ALL_CPUS Input file size is 677881, 303664 0...10... - estimated remaining time: 00:10:55ERROR 1: web_mercator.tif:Using code not yet in table ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: web_mercator.tif, band 1: IReadBlock failed at X offset 2570, Y offset 216: TIFFReadEncodedTile() failed. On Wed, 20 Aug 2025 at 22:43, Even Rouault <even.roua...@spatialys.com> wrote: > > > Can I do other useful tests tonight? > > Maybe just check/confirm that the issue is multithreading on the decoding > side (which it looks to be) with: > > gdal_translate web_mercator.tif web_mercator_jpeg.tif -co COMPRESS=JPEG > -co BIGTIFF=YES -of GTIFF -co TILED=YES -co BLOCKXSIZE=512 -co > BLOCKYSIZE=512 -oo NUM_THREADS=ALL_CPUS > > where web_mercator.tif is LZW or Deflate compressed > > -- http://www.spatialys.com > My software is free, but my time generally not. > >
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