[Therion] Progressive coded JPG files??

[Jonny Prouty]

Actually, I just noticed all those rpms show fc41. Sure enough I'm still on
Fedora 41 on this machine. I'll check on my desktop, which I'm pretty
certain has actually been upgraded to Fedora 42. Sorry for the false trail
here.

Jonny

On Tue, Aug 19, 2025 at 10:05 AM Jonny Prouty <jonathanprouty at gmail.com>
wrote:

> Hi Bill,
>
> I don't have a solution for you, but I do have a similar install in case
> it help. I'm also on Fedora 42, and I just tested, I can load into
> xtherion without issue both progressive and non-progressive JPGs. I am
> using therion-6.3.4-1.fc41.x86_64, which I believe comes from the
> jmbegley COPR repository.
>
> The rpm I have installed requires libjpeg:
> rpm -qR therion | grep jpeg
> libjpeg.so.62()(64bit)
> libjpeg.so.62(LIBJPEG_6.2)(64bit)
>
> This library, libjpeg.so.62 is provided by libjpeg-turbo on my machine of
> which I have a slightly older version than you (3.0.2 vs 3.1.0):
>
> rpm -q --whatprovides libjpeg.so.62
> libjpeg-turbo-3.0.2-3.fc41.i686
>
> Here are other jpeg related packages I have installed, in case it helps:
> rpm -qa | grep jpeg
> libjpeg-turbo-3.0.2-3.fc41.x86_64
> libjpeg-turbo-utils-3.0.2-3.fc41.x86_64
> mjpegtools-libs-2.2.1-7.fc41.x86_64
> openjpeg-2.5.3-6.fc41.x86_64
> libjpeg-turbo-3.0.2-3.fc41.i686
> libnvjpeg-12-8-12.3.5.92-1.x86_64
> libnvjpeg-devel-12-8-12.3.5.92-1.x86_64
> mingw64-libjpeg-turbo-3.0.2-3.fc41.noarch
> mingw32-libjpeg-turbo-3.0.2-3.fc41.noarch
> libnvjpeg-12-9-12.4.0.76-1.x86_64
> libnvjpeg-devel-12-9-12.4.0.76-1.x86_64
> jpeginfo-1.7.1-4.fc41.x86_64
>
> Let me know if you want me to check anything else on my machine, I'm happy
> to help.
>
> Best of luck,
> Jonny
>
> On Tue, Aug 19, 2025 at 9:35 AM Bill Gee <bgee at campercaver.net> wrote:
>
>> Hello everyone - This has been annoying me for a bit.  Today I
>> discovered it is actually a big problem.
>>
>> For the past few months - I do not remember exactly how long - When I
>> add a background to a th2 file, I get a message about unable to load the
>> file.  Screen shot attached.  For new th2 files I have got around it by
>> using magick to convert the background images to PNG files.  Easy and
>> quick, though annoying that it has to be done at all.  Many of those
>> images come from a friend who scans the paper through a flatbed.  He
>> uses Windows, and I just assumed something about his scanner software
>> was wonky.
>>
>> Today I went back to some stuff I last worked on several years ago.  The
>> th2 file failed to open the background.  The message said the file was
>> not available.  I removed the background image and tried to reload it.
>> BAM!  I get the same message about unable to load and asking if the file
>> is a progressive JPG!  These background images did not come from my
>> friend's scanner.  They came from a 25 year old camera.  Some are PDF
>> files converted to JPG and others come from my flatbed scanner using
>> xsane.
>>
>> These are files that worked several years ago.  I have not changed them.
>>   Trying some other stuff ...  It appears that xTherion will no longer
>> load ANY jpg file.  The question about progressive format is bogus.
>>
>> Does anyone have any idea what is going on?
>>
>> Yeah, I could go back and convert thousands of background images from
>> all the maps I have worked on.  It would take days to find and update
>> all of them, and all the th2 files as well.  But dang it - This should
>> Just Work!  And what happens if PNG files stop working, too??
>>
>> The system is Fedora 42.  Therion is 6.3.4+dev, compiled back in April.
>> I have several jpeg libraries installed:
>>
>> root at main2:~# rpm -qa | grep jpeg
>> libjpeg-turbo-3.1.0-2.fc42.x86_64
>> openjpeg-2.5.3-6.fc42.x86_64
>> turbojpeg-3.1.0-2.fc42.x86_64
>> openjpeg-tools-2.5.3-6.fc42.x86_64
>> libjpeg-turbo-utils-3.1.0-2.fc42.x86_64
>> libjpeg-turbo-devel-3.1.0-2.fc42.x86_64
>> openjpeg-devel-2.5.3-6.fc42.x86_64
>> jpeginfo-1.7.1-6.fc42.x86_64
>> jpegoptim-1.5.5-6.fc42.x86_64
>> mjpegtools-libs-2.2.1-8.fc42.x86_64
>>
>> I ran jpeginfo -i across some of these files.  According to jpeginfo,
>> they are NOT progressive format, as shown by the 'N' right after the bit
>> depth:
>>
>> 2021_04_01 SHN-017 CAVE SPRING CAVE PLAN VIEW X23-X26.JPG 1686 x 2952
>> 24bit N JFIF,ICC                 Huffman,300dpi       1487615
>>
>>
>> Thanks!
>> --
>> ===============
>> Bill Gee
>> _______________________________________________
>> Therion mailing list
>> Therion at speleo.sk
>> https://mailman.speleo.sk/listinfo/therion
>>
>
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