Its ok
If you are consciously trying to make a very stable video during recording it always looks shaky and jittery when you watch it full screen on pc. This app can clean up and smooth those videos and do a decent job of it. However the quality suffers, so for video where visual quality doesnt matter, this can improve the overall look by smoothing the shakes out. You will have to play with the settings and reduce the stabilization strength so that black bars dont appear when you pan.
I prefer my slightly shakier full quality videos in most cases.
RunkyTunky about
Emulsio 4 › Video Stabilizer, v1.1