This turorial time-lapse video was created by Brian Horgan. he is a freelance character animator/rigger working with Autodesk Maya and Maxon Cinema 4D. Other skills include MEL and Python scripting, ZBrush and After Effects.
A little demo of how Bryan block out a quick walk-cycle using custom mirroring tools he have written for Maya. This is 6x speed and was about 25 minutes in real time. Generally he don't animate most things in such a layered fashion, but for walks and runs he find it's a nice way to work quickly.
The main tools he has been using here are scripts that allows him to mirror different kinds of controllers, from IK feet and hands to Spine controllers and FK arms. These will work with pretty much any rig and don't need any set-up. During the blocking section he has been also using a tool that keys the same pose on the first and last frame of the cycle so Bryan don't have to play that frame when animating (which would look like a hitch since it's the same pose as frame 1). That tool is based on the 'set prompt' tool in Maya but automatically figures out how long the loop is so he don't have to type it in each time (he thinks he is actually using it too quickly to see clearly in the video but you'll see it flash up now and then.
The other thing you'll see him doing from time to time is favoring keys using my own version of the classic 'TweenMachine' tool. Bryan wrote a TweenMachine tool for C4D a while back and found. He preferred just having some buttons to nudge poses back and forward rather than a slider so he wrote one for Maya too. At the end of the video Bryan convert the walk-in-place to one that translates in world space using another toolheI created called 'bh_snapToWorldspace'.
All credit goes to the owner of the video Brian Horgan.