The single camera Rokoko Vision is a fully free video-to-mocap solution. It was one of the earlier attempts in this area and I was excited when it first came out. However, compared to other applications in this category, the quality of the results it produces are on the lower end of the spectrum… 😕
Give it a go but other free apps like PINOC will probably produce better results.
Rokoko Vision also offers a two-camera variation, which is significantly better but may be more difficult to setup. I haven’t personally tested it at this time.