Cinelerra Motion Tracking Test

I used test footage from my Canon PowerShot A480 and a PNG image quickly made in Gimp to make this. It's the very frist attempt, so it's not perfect. The track is lost right towards the end of the shot, and it's a bit jerky. But I'm very pleased with the ease with which I could do it.

It took me a while to realize the importance of settling speed.

As a sidenote I used the option to track relative to the first frame, and then applied "Track subpixel" action, instead of tracking relative to previous frame and doing the "Stabilize subpixel" action. I don't know how others do it, but I've seen people do latter with great success. For me, the former method worked better.

Here're some tips:

http://www.youtube.com/watch?v=qsFHEr92PPE
http://www.youtube.com/watch?v=gudsTngwIaA
(see the info on those vids for the link to a tutorial)

Also look up section "14.4.33 Motion" in the Cinelerra manual:

http://cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_14.html

There are many useful tips (and I mean _many_) there.

Category:

Film & Animation

Tags:

• video
• sfx
• cinlerra
• motion tracking

[shaynapulley]

@sprocket2cog awesome, thanks

[sprocket2cog]

@shaynapulley

by using a solid image like a black box instead of a lens type flare in this test you could easly block something from view.

[shaynapulley]

Is it possible to use Cinelerra's motion tracking feature as a way to censor faces and personally identifiable items?

(I'm talking about hiding things like names, streets, addresses, phone numbers, etc.)