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How an animator learned to love motion capture
Thursday, 27 January 2011 20:59

This week marks my fifth year as a game developer. And like any anniversary, I can’t help but reminisce about times gone by. Add to that the fact I only started animating with the computer a little time before, and I am the definition of sentimental at this moment. But with this being my first post, I figured you might indulge my trip down memory lane as a perfect introduction to my background and way of thinking. So pull up a chair… er, pull your chair closer to your digital firebox and settle in for my technological soap opera.

My fear and distrust of technology started immediately. I went to school for hand drawn, “traditional” animation, forsaking the computer as an impure method of crafting such a magical art. 2d animation versus 3d animation was (is?) all the rage while I was in school, as many believed the influx of 3d KILLED 2d, and that to even THINK about trying computer animation was to sacrifice your warm, organic heart for a cold, lifeless toaster.

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Though once graduating, the reality of just wanting to animate instead of working at Radio Shack quickly tempers such hostility towards method. So by the time I finally realized learning how to animate in a 3d medium was necessary to find work, I just kept telling myself I had to make peace with it. But then a funny thing happened. I fell in LOVE with computer animation. I was no longer held back by my drawing ability or the time it took to process each drawing to finally see my character come to life. I could quickly add subtlety to facial expressions and held moments that breathed a sense of life into my creation more than I ever felt I could before. And ultimately, it was the same thing I was doing when was slaving over the drawing board. I was creating movement and life by my own hands, just with different tools. And by the time I was putting a reel together to find work, adding any of my hand drawn animation didn’t even enter my mind.

So fast forward through the job hunt, the job interviews, my first studio, learning how game animation varied from film, shipping my first game, then leaving my first studio for my second and you will find me excitedly animating The Incredible Hulk. Everyday I got to go to work creating over the top animations of a giant green monster smashing other brightly colored creatures. And after two years of hand keying animations in games, I was getting pretty comfortable with my skills. Sure, I still had a lot to learn, but I was as adapt with a mouse and keyboard as I ever was with a pencil and paper. But of course, comfort and technology are always at odds. It was getting towards the end of the project, and there was still the little issue of 30 minutes of cinemas that needed to be done. And as much as every animator at the studio would have LOVED to hand key every one of those 30 minutes with an attention and love it deserved, the deadline meant that wasn’t going to happen. So it was decided by those leading the project that we were going to use mocap.

And there it was. The first shot in the next animation war I was about to be drafted into.

I had heard of other animator’s war stories about their experience with motion capture. Most complained about how constrictive it was, having a key on every frame and no easy way to adjust timing without losing the subtlety of the motion. But the biggest issue was that the animation wasn’t yours. It was the director’s intent with an actor’s movement. By the time the animator got it, they were just meant to be a faceless drone that smoothed it all out, added some finger movement and copied the facial animation from the video of the actor. And that is the opposite of what an animator wants to do. We got into the field to create performances and feelings of emotion that are real to anyone that sees them. We are the actors, we are the directors. We are not the janitors of other people’s movements and performances.

So, with all those thoughts running in my mind, I am given my first cinematic with mocap. And instantly, all those horror stories came true. Without a mocap studio of our own, it had to be done offsite, many states away. That meant that only a couple people could go to interact with and direct the actors. Not having the tools to process or experience to clean up much of the data, everything was first outsourced to another studio. But as with any outsourcing, what you get back isn’t going to be able to go right into the game, so even when the cinematics were delivered, we still had to touch them up and get them into the engine. Our custom rigs and tools were not made with mocap in mind, so our workflow took a real hit. It was a nightmare and everyday I swore that I would never work with mocap. Ever. Again. The war of key framed vs mocap was on, and I felt stronger about it than I had about 2d vs 3d. Probably because this directly affected how the rest of my career was going to play out. Mocap was a dirty skinjob!

But again, life has a way of finding ways to challenge those convictions. I was on the search for a new studio to hang my hat, and the one I was most interested in was heavily invested in mocap. To the point they had their own motion capture space. And while I was initially being brought on to do key framed animation, I knew I would have to deal with mocap. But be it hubris or just general excitement for the studio, I accepted. And when it came time to work with mocap data, I braced for the worst. Then surprising thing happened. What I found was that it wasn’t as bad. Mind you, it still sucked. I was having to clean up someone just talking in front of a table, and neither the performance, movement or direction were ones I felt any form of connection to. But at least this time there were tools in place and I knew if something wasn’t working, it could be recaptured quickly or I could talk about the intent of the performance with the director or actor. It also fit the characters and the world better than in a superhero game. So both visually and work flow wise it made sense. So I dealt with it as the majority of my time was still key framing creatures and just generally awesome stuff. I was comfortable and content, so of course mocap had to find a new method of attack.

As that project was wrapping up, I was moved to another game with another team and lead animator. And quickly my day to day work was ONLY dealing with mocap data. And what was worse, it was just taking files from an excel list, with no interaction between the director or actor what so ever. Sure, the tools were better than what I had on Hulk, but this felt just as soul crushing. My connection to the characters was non-existent and I am sure that was felt in every asset I checked in. Mocap had fired back, and it was a critical shot. So, when I again switched teams and leads, I felt like I was being medevaced to safety. And now I was part of a resistance to fight back! When my new lead said he didn’t care if we used mocap or key frame, just as long as we got the work done to the proper standard, I gave mocap the middle finger. I was going to do nothing but key frame, and my time with mocap was all but a distant memory.

But as is always the case, deadlines started to loom. And the need for mocap to get everything done became apparent. But this time, it came with a caveat. If we were going to use it, each animator was able to direct the actors. So even if we couldn’t animate it, we could still get the performance we wanted. While I figured this was mostly just a consolation prize after having my precious key frame taken away, I was on board to try my hand at directing, if for nothing other than the experience. Plus, directing actually sounded like it might be kinda fun. There was a glimmer of hope.

The first time I directed mocap, it was awkward. I wasn’t sure where I should stand, who I should talk to, how physically involved I should get with the actors, how MUCH direction I should give them, and when I was asking too much of them. I actually left that first session with a new level of dread for all things mocap. I had all but written off any sense of fun with the mocap process. But then I was delivered the data to be cleaned up. And at that moment I realized what I had always hated about mocap: the lack of ownership. Sure, the motions weren’t 100% dictated by me, but the intent was. The performance was what I would have done had I hand keyed it, and now I just got to go in and push the timing, and the poses. And that was enough to keep me going back to each session, willing to invest myself more and more into the mocap experience. By the end of the project, I was looking forward to directing the actors more than anything else I was involved with.

As that project wrapped, and we started to do R&D on the next, it was decided the art style was going to be less realistic and more stylized. You know, the type of thing animators dream about. We had visions of key frame animation and cup cakes dancing in our heads. But I had a nagging feeling that we would be missing out on an opportunity if we didn’t use mocap. The reality is, as games require more animation, the ability to keyframe all of them becomes harder and harder. And in all honesty, keying idles, turns and the sort aren’t the most fun. So I decided to work with the mocap department to try and come up with a method to integrate it with a more keyframe sensibility. The rest of the animators on the team weren’t too excited about the prospect, but since it was just R&D, and there hadn’t been much success before, I don’t think they worried much that anything would come of it.

Before we captured anything, I sat down to identify what the biggest issues the team had with mocap. At this point, I was done fighting the war, and wanted to come up with a treaty.

  1. The team did not like MotionBuilder, which was the defacto mocap program. They were comfortable with 3ds Max Character Studio and wanted that as the only program we had to use.
  2. Quick delivery of the solved data was needed so that the animators could jump right into the editing process.
  3. Proof of concept was needed that something stylized could be created, in essence not making it look like mocap, faster than just hand keying it.
  4. That complete ownership could be felt with the final product. We needed to be able to say, this is my animation from beginning to end.

The first two points were largely out of my hand. We had a mocap department that handled all the tech, and up until this point solving quickly to character studio biped had been an issue. But thankfully when they looked into it again, they found with newer versions a lot of the kinks had been worked out and they could deliver as quickly as they had in previous pipelines. Problems 1 and 2 were quickly taken care of. That left 3 and 4 squarely on my shoulders. But this was the fun part, and was ultimately what I had wanted all along.

First step was to get to know the character, like we would with anything we animated. But the important part was getting the actor in on the research soon after I had an idea what I was looking for. As soon as I had some reference pictures, video, key frame tests, concept art and the model, I would sit down with them as I was scheduling the shoot. This gave them time to understand the character and start thinking about what was going to be needed. This also got us both talking about and explaining the purpose of each animation before anything was even recorded. By the time we did get into the studio space to record, we were both aware of what I wanted out of the character, and how we were going to do it. This allowed us to just get past the functional part of the animation and drill down to the personality, timing and emotion of the action. You know, the stuff us animators go gaga over. This also opened both myself as the director and the actor to experiment with different methods of expression in their performance. If the character is blind and meant to stumble around, we would have the actor keep their eyes closed, and put some cushions and mats throughout the space for them to bump into unknowingly. If they are meant to be a violent, loud character, getting them to scream violently would come more easily if they weren’t worried about just trying to remember the basics. And having spent all that time getting into character meant we were both comfortable physically interacting with one another when it came time to posing. And getting that emotion out of the actor comes through in the data. The way they hold them selves, and whether they are giving it their all or holding back can be seen when you put it onto your character in the game. And getting that performance out of the actor is incredibly rewarding as a director, because you are crafting a performance. And THAT is that true sense of ownership we had yearned for.

After that, editing the mocap to get something stylized was just a matter of playing around. I first key framed the action I wanted to get a time estimate that I could compare the mocap against. With that in place, I dove into editing process. It was at this point I realized that essentially what I was doing was capturing video reference of what I wanted to animate, but now had the ability to manipulate that reference freely and quickly. And while I am in no way a propionate of character studio or biped (maya custom rigs FTW!) I found my familiarity with the tools made for quick and easy mocap editing that was FUN! It became my sloppy joe moment. See, I don’t like ketchup or mustard on their own, but when you mix them together with some magic, it becomes a delicious sloppy joe. And in the case of max and mocap being ketchup and mustard, ownership was that magic ingredient.

And here is the moment I fell in love with mocap.

 

(download)

Sure, nothing revolutionary in the final product or the work method. But it was enough that at the end of the process, I was excited about the animation and proved that adding mocap into the workflow could personally pay off. I wasn’t saying we should use mocap for everything, just that we could benefit from using it where it excels: idles, walks, runs, transitions. It would give us the base that we could quickly push to fit out needs, and save us time, allowing us to really throw ourselves into the more elaborate, over the top animations we all love. The moment that I truly realized it was successful was when a couple days later a couple of the animators most against its use were in the mocap studio, by their own choice! The treaty had worked! Humans and Cylons were working together in harmony!

It took me five years to really believe what I had just said to make peace with my conscience when I first started down this career path. 2d, 3d, keyframe or mocap doesn’t really matter. They are just tools and you don’t always get to choose which one you use. What you do get to choose is your involvement in each, because that is where you will find your happy place.

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