[Qgis-user] QGIS Windows build fails to load WMS with format image/jpeg

[Tim Sutton]

Hi

I think this is just a packaging bug in that the qt jpeg drivers
probably arent packaged properly / at all. Marco Pasetti would be the
guy to go to on this.

Regards

Tim

2008/8/8 Stephan Holl <stephan.holl at intevation.de>:
> Hallo Andreas,
>
> Andreas Neumann <a.neumann at carto.net>, [20080808 - 11:19:26]
>
>> Hi QGIS Windows users,
>>
>> I have a strange problem that my QGIS Windows build (Metis) doesn't
>> support the display of image/jpeg with WMS. It works fine in Linux,
>> but not in Windows. I only get image/png as a choice, although the
>> GetCapabilities output of the WMS shows support for gif/jpeg/png/tiff.
>>
>> Is this due to a bug in QT for Windows? I replicated the behavior on
>> both Win2000 and WinXP. The same WMS works fine on Linux with
>> image/jpeg.
>
> I was told that at least QGIS 0.10.0 (IO) had that problem, that the
> windows build was built without JPEG-support. It seems that this is
> also the case for 0.11.0 (Metis).
>
>> On the same issue, we discovered that some WMS (e.g. UMN Mapserver)
>> offers two version of PNG:
>>
>>        <Format>image/png</Format>
>>        <Format>image/png; mode=24bit</Format>
>>
>> QGIS only picks up the first variant, but in my case I want the
>> second one - jpeg is prefered, but png/24bit would be the second
>> choice. I am serving orthoimages in this case, where we want 24bit
>> color depth.
>>
>> The second issue affects all versions of QGIS, while the first issue
>> only appears on Windows - works fine in Linux/MacOSX.
>>
>> Thanks for any feedback on this issue.
>
> I leave this topic for others, since I don't know anything about that.
>
> Best regards
>
>        Stephan
>
>
> --
> Stephan Holl <stephan.holl at intevation.de>, http://intevation.de/~stephan
> Tel: +49 (0)541-33 50 8 32 | Intevation GmbH | AG Osnabrück - HR B 18998
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-- 
Tim Sutton
QGIS Project Steering Committee Member - Release Manager
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