Check out an awesome work by Jakub Javora who managed to bring a traditional painting to life with a tool you might find interesting.
This awesome animation was made with software called EbSynth, being developed by Secret Weapons, which lets users turn paintings into hand-drawn animations. The beta version of the tool can now be downloaded for free and used for commercial projects. The team is now working on the final professional version that will come up with a license and will be paid.
The process is quite simple: users can upload a video and a couple of keyframes — the tool will do the rest. "Always start with one painted keyframe and run the synthesis. After a while, you‘ll see the output frames start to get messy. That‘s the time to add more keyframes. You‘ll create one by picking one of the messy result images and fix it by painting additional brush strokes over it. That way you make sure that all keyframes are consistent which is essential for the natural-looking of the final blend," notes the FAQ page.
Here are some other cool examples from the concept artist showing how the tool synthesizes animations from sketches: