Sharp: vips warning: VipsJpeg: error reading resolution

[mahnunchik]

I've faced with a lot of warnings like:

vips warning: VipsJpeg: error reading resolution
vips warning: VipsJpeg: error reading resolution
vips warning: VipsJpeg: error reading resolution
vips warning: VipsJpeg: error reading resolution

macOS 10.12.1
[email protected]

$ node -v
v6.7.0

libvips was downloaded by sharp

[lovell]

Hello, my best guess would be that this is related to https://github.com/jcupitt/libvips/pull/518 introduced in libvips v8.4.2.

These warnings are mostly harmless and can be ignored by setting the VIPS_WARNING environment variable.

(See also https://github.com/jcupitt/libvips/issues/544 for some future possible improvements around logging.)

[jcupitt]

Hi @mahnunchik, I'm the libvips maintainer. Could you post a sample image that produces a warning? I'd like to fix this, if I can.

[mahnunchik]

Hi @jcupitt

Sample images:

• http://www.aranzadi.eus/fileadmin/images/micologia/Eskaneatuak/11_digital/Agaricus_abruptibulbus_paa_090619.jpg
• http://www.first-nature.com/fungi/images/agaricaceae/agaricus-silvicola1.jpg

Tell me If you need more images with the same behavior.

[jcupitt]

OK, I've removed the warning. This change will be in libvips 8.5. Thanks!

Your images have exif data but no exif resolution fields, even though they are required by the spec, since (I think) CS3 is assuming that readers will fall back to the jfif resolution settings.

The libvips reader does this, so the warning for out of spec exif is probably not useful.

[jyotman]

@lovell version 8.5.1 has been released :1st_place_medal:. Check here.

[lovell]

Warning messages from libvips will be suppressed by default in sharp v0.18.0+, which will require libvips v8.5.2+. Please subscribe to #607 for details and updates.