Desktop - Massive Stars in NGC 6357

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( Click for desktop-size image )

Help request

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I wanna make .gifs. Specifically, I wanna make .gifs from film clips. Like this:





(Yes, that's Karl. Yes, he's hot. Hey. HEY! EYES DOWN HERE.)

So, can anyone either tell me how to do that, or point me to a good tutorial? I've got several that I've been really really wanting for a while now. (Will share when I have them, o'course!)