RESOLVED WORKSFORME 222150
Some JPEG 2000s fail to load in iOS 14.5 
https://bugs.webkit.org/show_bug.cgi?id=222150
Summary Some JPEG 2000s fail to load in iOS 14.5
Eric Portis
Reported 2021-02-18 17:57:22 PST
Many JPEG 2000 images, which decoded and displayed fine in iOS 14.4, fail to load in iOS 14.5 betas. I don't have access to a beta versions of Big Sur but I wouldn't be surprised if this affected MacOS too. I'm testing with Simulator Version 12.5 (961). Steps to reproduce: Try to load any of the following images: (generated with OpenJPEG) https://ericportis.com/etc/jp2_test_files/USA_Pro_Challenge/USA_Pro_Challenge.jp2 https://ericportis.com/etc/jp2_test_files/Snowman_snowman/Snowman_snowman.jp2 https://ericportis.com/etc/jp2_test_files/Zion_narrows/Zion_narrows.jp2 (generated with Cloudinary, which uses Kakadu) http://o.img.rodeo/w_500/sample.jp2 http://o.img.rodeo/w_500/dogs/5.jp2 http://o.img.rodeo/w_1000,q_auto/dogs/7.jp2 Not all JP2s are affected. This image, exported from Preview.app on MacOS Big Sur, loads successfully: https://ericportis.com/etc/dog-5.jp2 I am assuming this is the fault of an underlying system framework, and will be closed, as previous image decoding bugs in WebKit have been. I have also submitted FB9010730, about this.
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Alexey Proskuryakov
Comment 1 2021-02-19 22:34:39 PST
FWIW, I cannot reproduce this on an iPhone or a Mac. I don't have a working simulator to try at the moment.
Eric Portis
Comment 2 2021-02-20 09:04:01 PST
Alexey Proskuryakov #1 what version of iOS and Mobile Safari are you attempting on?
Radar WebKit Bug Importer
Comment 3 2021-02-25 17:58:12 PST
<rdar://problem/74770141>
Said Abou-Hallawa
Comment 4 2021-03-10 21:24:02 PST
(In reply to Eric Portis from comment #2) > Alexey Proskuryakov #1 what version of iOS and Mobile Safari are you > attempting on? I could not reproduce this bug on iPhone 11 Pro Max with iOS 14.5 beta. I could not reproduce this bug on iOS simulator Version 12.5 (961.1) and macOS Big Sur 11.3 Beta. I also noticed that the first link "https://ericportis.com/etc/jp2_test_files/USA_Pro_Challenge/USA_Pro_Challenge.jp2" is currently broken. But I could see the rest of the images on the device and on the simulator.
Said Abou-Hallawa
Comment 5 2021-03-10 22:48:24 PST
Correction: the first picture "https://ericportis.com/etc/jp2_test_files/USA_Pro_Challenge/USA_Pro_Challenge.jp2" is not broken. But webkit-bug-importer imported it as "https://ericportis.com/etc/jp2_test_files/USA_Pro_Challenge/USA_Pro_+Challenge.jp2". So I was not able to load it.
Smoley
Comment 6 2021-03-11 10:20:06 PST
This does not reproduce for me either on iPhone 12 mini with latest iOS 14.5 beta.
Smoley
Comment 7 2021-03-11 10:24:19 PST
I also tested on latest macOS Big Sur 11.3 beta btw. All linked images loaded fine.
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