Need help with animation videos

Hello,

How can I use a video background as a reference to create a walk cycle?

I have some reference videos of people walking and would like to have this video in the background so that I can use the video of the person walking as a direct reference to keyframe my 3D model and create a realistic walk cycle.

Is it possible? Can I cycle the animation videos forward/backward and pause it at the correct point etc?

Any help would be greatly appreciated

 thank you.