I don't know how you'd make it from a video unless it's on a tripod and the camera is pointing in one position. If that's the case you can grab a bunch of frames using something like Premiere Pro (that's what I use anyway) then make the sequence shot in photoshop etc.
Normally to get a shot like that you would use a stills camera, ideally a DSLR with a decent frame rate mounted on a tripod in position. Then you just need to take the shots you want, open them all as separate layers in photoshop and just mask out everything except the rider in each layer, flatten the image, edit.
I've made a couple but have never had a tripod when taking the shots. The minute movement between each shot is a royal pain in the ass.