[NTG-context] Re: Problem with JPEG2000 inclusion in 2025.02.28 update

Hi Wolfgang, thanks for replying. On Sun, Mar 23, 2025 at 18:34 (+0100), Wolfgang Schuster wrote:

Am 22.03.2025 um 13:18 schrieb Bruce Horrocks:

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On 20 Mar 2025, at 17:09, Jim wrote:

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I use JPEG2000 images and, unit the most recent update, these worked fine for me (i.e., anywhere a "normal" JPEG could be included, a JPEG2000 could be included).

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This seems to have come to a crashing halt with the 2025.02.28 update. Now I just get the gray box. Here is an example of it not working (I have attached a .JP2 image of ConTeXt's favourite cow):

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Which OS are you using because I have no problem displaying sample1.jp2 from https://toolsfairy.com/image-test/sample-jp2-files on a Mac using 2025.02.28.

I would add the following tracker at the beginning to get more information out of ConTeXt.

\enabletrackers[graphics.*]

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\starttext \externalfigure[sample1.jp2][height=20cm] \stoptext

Thanks for that suggestion. With that suggestion, and a bit more digging, the "mystery" is solved. First, I want to apologize for making an unforgivable mistake on my initial question, because although I thought (*cough*) I confirmed that example didn't work, in fact it does work for me (at least now, and presumably before). A more recent message I sent had the one which didn't work, and still doesn't: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \definegraphictypesynonym [jpx] [jp2] \setupexternalfigures[location={local,default}] \starttext \line{% \externalfigure[cow.pdf][height=1in]% \hss \externalfigure[cow-jp2.jp2][height=1in]} \vskip 20pt \line{% \externalfigure[cow-jpg.jpg][height=1in]% \hss \externalfigure[cow-jpx.jpx][height=1in]} \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% The problem (as I now discover, because of Wolfgang's sample and tracker suggestion) is the line \definegraphictypesynonym [jpx] [jp2] which I egregiously omitted from my first (over-)simplified example. I needed this before 2025.02.28 because up until then the .jpx extension was not known to ConTeXt, and some helpful person on this very mailing list suggested I add that to my context source files. However, including that line in the 2025.02.28 version (with the tracker) and running context produces this output: figures > label: cow-jp2.jp2, name: cow-jp2.jp2, parent: cow-jp2.jp2 graphics > inclusion > forcing format 'jp2' graphics > inclusion > unknown format 'jp2' graphics > inclusion > './cow-jp2.jp2' resolved to './cow-jp2.jp2' graphics > inclusion > checking conversion of './cow-jp2.jp2', fullname './cow-jp2.jp2', old format 'jp2', new format 'pdf', conversion 'default', resolution 'default', crop 'yes', arguments '' graphics > inclusion > format 'jp2' is not supported So even in a test file with no .jpx file like this %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \definegraphictypesynonym [jpx] [jp2] \setupexternalfigures[location={local,default}] \enabletrackers[graphics.*] \starttext \line{% \externalfigure[cow.pdf][height=1in]% \hss \externalfigure[cow-jp2.jp2][height=1in]} \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% the \definegraphictypesynonym causes context to not "know" .jp2 files. In summary, it would appear that \definegraphictypesynonym [jpx] [jp2] is now a very bad thing to have in a context file. I used diffpdf to compare two versions of a 24-page document: the one I created before upgrading to 2025.02.28 and the one I just did now, after removing that \definegraphictypesynonym line. Aside from a couple of changes in line-breaking, and some (presumed) false positive differences, all seems to be good. Again, thanks to everyone who contributed, and I am sincerely and profusely sorry for wasting your time. Jim