Sometimes videos suffer from symptoms like “shaky-camera-itis” or “augmented-darkness-levels” that keep viewers from seeing just how awesome your video really is. We made a big step last year with the YouTube Video Editor, and now we’re adding a feature that does the work of curing these symptoms for you.
If you upload a video that’s shaky or dark, we’ll automatically offer to fix it for you, creating an updated version of your video on YouTube.
If you want to experiment doing this yourself Virtualdub is the ticket. There are literally thousands of filters available including ones that will attempt to fix shaky video. Keep in mind a filter like this basically destroys content on the perimeter of the video.
Ideally you should shoot with a nice tripod and the anti shake off unless it's mechanical because this too reduces resolution.