Green Screen Test: Backgrounds and Bullets

I’ve just uploaded a new video, some basic green screen background replacement tests I’ve been playing around with the last few days.

Shot on the Canon HG10 with the green screen set up in the sitting room; I was on my own so had to keep it simple with the camera set up on the tripod. I only had one construction light so it was pretty difficult to key properly after.

The first shot was the easiest, adding the alley to footage of me walking on the spot and then playing with the scale and position to add some movement. The second shot took a while to get right, my first attempt was scraped after I got well and truly lost in 3D & time.

Attempt 2 went better, but you’ll notice as I raise the gun at the start that it disappears briefly, I spent hours trying to adjust things so that wouldn’t happen. I’m told it’s not my fault… it’s something called inter-frame compression on the camera. I’ve had Sla explain it to me a few times and kind of understand it but if I tried to explain it then my head would explode.

The next problem I had was timing the movements of the two separate clips of me with the background as the camera follows the bullet. Once everything was in sync I added the muzzle flash and the bullet hit. I did some very basic colour correction on the whole thing and added the bars, some sound effects from iLife and music from Garageband.

The first version of the shot was sped up by precisely 715% (thanks Sla) to get the fast whip and the second shot plays at the speed I put the whole thing together but appears in slow motion thanks to a nice bit of sound design, once again thanks Sla.

Finally, after explaining inter-frame compression several times then cleaning up my speed and sound issues, Sla added some colour grading in Magic Bullet.

Overall, it was good fun and better practice and as always comments, feedback or advice are welcome.