Regarding the YouTube video, it does not work for two reasons:
- The video quality is rather poor (240p) and not sufficient for the current recognition algorithms
- When variations are shown, multiple stones are removed from the board. Baduk Cap only supports removal of the last played stone.
At the moment, I am working on image recognition improvements - that might help with the first issue.
Enabling variations, however, would introduce a lot of complexity, both in the program and on the UI, and I currently do not see enough demand to justify that.