Retiring the OpenJPEG (jp2) plugin

[Alvin Wong]

jpeg2000 isn't only used for movies though... I heard that medical
images use them too. I heard that it has the ability to save in
dynamic range and in 16-bit, in both lossy and lossless formats with
really good compression, which sounds pretty nice for exporting Krita
sketches in.

But it seems to lack mainstream support, so I never actually looked
into more details.

It might be a good format for storing images when the original .kra
isn't needed...

Alvin

2016-08-02 17:28 GMT+08:00 Fazekas László <mneko at freemail.hu>:
> Honestly I had no idea yet that Krita can use jpeg2000... Actually it's the
> picture format of the movie frames inside the DCP format (with XYZ color
> space). However, DCP is a final export format for cinema projection but it's
> very hard to play in real time without special hardware. I think it's not
> really used for compositing and animation. At least that's what I see. So I
> think it's safe to remove.
>
> What would be better to support for animation is the DPX format. It's
> uncompressed, the native capture format of the BMD cards and I think it's
> widely used in high quality digital video/cinema projects, like color
> grading.
>
> Fazek
>
> 2016-08-02 10:58 keltezéssel, Boudewijn Rempt írta:
>>
>> Hi,
>>
>> We've had an openjpeg plugin for nearly a decade. However, the plugin
>> is based on openjpeg 1.5, and does not build with 2.0, We do not build
>> the plugin on Windows and OSX, though that has become possible with the
>> patch at https://phabricator.kde.org/D2332 . There is one further problem
>> with the plugin: on the platforms where it's built (Linux distribution
>> packages), its only function seems to be to confuse people who think
>> they are saving to jpeg.
>>
>> I want to propose to delete the plugin altogether instead of spending
>> time and effort to update it and teaching users the difference between
>> jp2 and jpg.
>>
>> I've put out a quick user poll on twitter asking people whether they
>> would want to use the format (since most people haven't had access
>> to the plugin anyway:
>> https://twitter.com/Krita_Painting/status/760399095542448128
>>
>
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