[krita] [Bug 445657] Loading 250 Frames performance problem and jump back/forward buttons doesn't seem to do ANYTHING

[Hoang Duy Tran]

https://bugs.kde.org/show_bug.cgi?id=445657

--- Comment #2 from Hoang Duy Tran <hoangduytran1960 at gmail.com> ---
What about this idea, load only the first frame, or where ever the playhead is,
and only show 1920x1080 * size of pixel, and display it in canvas, because
after loading the animation in that's what is shown. Then open (forking) a
thread in the background to load other frames in, creating a reduced version
for display purposes if you like (automatically, in Blender they called
proxies, by default is 25% of the original), so at least allowing user to
scrubbing through the video without any visual delays. Just a suggestion for
the implementation. If I was doing the coding, that's what I would have done in
this situation, to speed up the display.

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