quantization tables are too coarse for baseline JPEG

Support and queries relating to all previous versions of ZoneMinder
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qriff
Posts: 15
Joined: Thu Sep 20, 2007 9:11 pm

quantization tables are too coarse for baseline JPEG

Post by qriff »

Regarding http://www.zoneminder.com/forums/viewtopic.php?t=1215

I confirm this for even the current version...
(just to get the "issue" logged to this forum)

Running ZM v1.22.3, using a generic one-chip four-port bt878 on a dual-processor p3 with 256Mb memory. (Gentoo)

Using a setting of 15% to lower bandwidth and still producing high enough image quality:

With ZM_JPEG_IMAGE_QUALITY set bellow 25 (%) there will be a warning

Code: Select all

10/07/07 14:41:16.762567 zms[4708].INF-zm_jpeg.c/72 [Caution: quantization tables are too coarse for baseline JPEG]
Dont know what it reflects on but everything seems to be working ok.
qriff
Posts: 15
Joined: Thu Sep 20, 2007 9:11 pm

Post by qriff »

Still same, running v1.23.3.
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