Need some advice about what to use, flash, html5, etc..

[aguayro]

Hi, i have in mind write an app that need 2D animations from files (so the users can make skins).
At first i decided use Flash, but somebody said to me that Flahs uses too many system resources, and HTML5 is better, lighter, etc.
My app wil be an arcade cab front end, so i need nice 2D animations like flash, running on a humble computer.
I'm not a very experienced programmer, so i need some advice about what to use, flash, html5, or any other format, bearing in mind that i want use Qt as much as possible, and ii'm not sure what Qt can play.

Thnaks, and sorry for my english.

[wysota]

In this situation I'd suggest using QtQuick (QML).

[aguayro]

i need to learn java for working wit QML, i'm right?

[wysota]

No. QML uses JavaScript. It has nothing to do with Java (apart the name). It's much closer to C.