Why is this GIF jumping?

[JoshBB]

http://i.imgur.com/LWHr6G9.gif

I'm pretty sure I haven't missed any frames from the video convert.

[GypsyGoth]

Looks like you might have repeated some of the frames.

[LukeB]

how do people make gifs D:

[Marc]

Maybe she just moved so fast that the human eye couldn't detect it

[JoshBB]

Looks like you might have repeated some of the frames.

There are twenty I have saved, and the first ten work fine without skipping. If I add more than that, it glitches.