Bending a Potion of the Image

[Colorful_sincerityB82A]

LHS is a  screen shot of a video. I want to bend the legs like in the second image. Is it possible? I tried with puppet tool but found that background also moves as well. Video is attach as well. How to do it?  

Abs workout

[Rick Gerard · Accepted solution]

To bend the leg, it needs to be on a separate background. Duplicate the layer and then create a mask or edit the image in Photoshop and create separate layers for the body parts you want to animate. 

[Colorful_sincerityB82A]

Thanks.