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<p>Hi Randal,</p>
<p>A crash is always a bug, in my opinion, even if your file isn't optimized.</p>
<p>Note, that the correct parameter is "tiled=yes" not "tiles=yes". Not sure if this helps.</p>
<p>Fyi - here is one of my examples with gdal_warp:</p>
<p>gdalwarp -of GTiff -wm 500 --config GDAL_CACHEMAX 500 -multi -wo NUM_THREADS=2 -wo OPTIMIZE_SIZE=TRUE -srcnodata "255 255 255" -dstnodata '255 255 255' -t_srs 'EPSG:2056' -co 'BIGTIFF=YES' -co 'TILED=YES' -co 'COMPRESS=JPEG' -co 'JPEG_QUALITY=85' -co 'PHOTOMETRIC=YCBCR' -co 'SPARSE_OK=TRUE' Originaldaten/*.tif DOP2011_LV95.tif</p>
<p>the PHOTOMETRIC=YCBCR is specifically to be used for aerial images or satellite images.</p>
<p>Of course, for good performance, you also need the pyramids:</p>
<p>gdaladdo -r cubic --config BIGTIFF_OVERVIEW YES --config COMPRESS_OVERVIEW JPEG --config JPEG_QUALITY 85 --config PHOTOMETRIC_OVERVIEW YCBCR --config INTERLEAVE_OVERVIEW PIXEL DOP2016_LV95.tif 2 4 8 16 32 64 128 256</p>
<p>Hope this helps,</p>
<p>Andreas</p>
<p>On 2017-05-08 15:29, Randal Hale wrote:</p>
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<ul>
<li>QGIS: 2.18.7 </li>
<li>GDAL 2.1.3</li>
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<p>I have a tiff file. I decided to jpeg compress it for some help with the size. </p>
<p>I did: gdal_translate -co compress=jpeg -co tiles=yes oldfile.tif newfile_jpg.tif </p>
<p>When I open the file in QGIS (2.18.7) on linux it crashes immediately.</p>
<p>When opened on windows if the file is small it takes about a minute but displays. If I compress a larger tiff (compressed size is 1.1 gb) QGIS on windows crashes. </p>
<p>I checked for bugs and there seems to be a jpeg bug out there: <a class="moz-txt-link-freetext" href="https://issues.qgis.org/issues/16049">https://issues.qgis.org/issues/16049</a></p>
<p>If I do this with compress=deflate, QGIS is happy. </p>
<p>Anyway - file a bug report? or I'm doing the compression incorrectly? </p>
Randy<br />
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Randal Hale
North River Geographic Systems, Inc
<a class="moz-txt-link-freetext" href="http://www.northrivergeographic.com">http://www.northrivergeographic.com</a>
423.653.3611 <a class="moz-txt-link-abbreviated" href="mailto:rjhale@northrivergeographic.com">rjhale@northrivergeographic.com</a>
twitter:rjhale</pre>
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