Ashampoo Video Optimizer Pro provides quite precise image stabilization, meaning you can substantially improve any video recorded with your smartphone or camera. Though the program is a bit complicated to handle starting out, you'll very quickly get familiar with the interface and should soon be able to use all its features.
One of the key things about Ashampoo Video Optimizer Pro is that it also lets you improve more specific parameters such as the color, contrast, or exposition. The latter can be quite useful for videos recorded in bad lighting conditions.
If you need to optimize your videos and don't want to deal with more complicated editing programs, Ashampoo Video Optimizer Pro is a good option that should make postproduction a piece of cake.