Editing softwear

So I got a problem, my video editing softwear doesn't do what I want. I need to be able to speed up clips, but I don't have the ability to do it. Right now I'm useing magix 12 or something, it's alright, but it's missing some shtuff I want, I liked windows movie maker for all the effects (affects?), such as speed up and slow down, but my camera does .mov so it doesn't work. I've tried saving clips in magix as .wmv, then windows movie maker will freeze about 46 secs into editing it and also won't play the audio. What the shell bro? I want some help, at least some sympathy. Comment me please

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