It is currently Tue May 11, 2021 5:27 pm




Post new topic Reply to topic  [ 3 posts ] 
 Timelapse with real-time compositing 
Author Message

Joined: Wed Dec 01, 2010 12:33 pm
Posts: 1
Post Timelapse with real-time compositing
Hello,

I have an idea for a project I am working on. I want to be able to shoot a timelapse action scene, and then composite a person in to the scene who is in real time. I want the two shots to match so that it looks like the real-time person is in a fast-paced environment.

The only way I can think to do this is to shoot the timelapse separately and then greenscreen + composite the real-time shot (while trying to match the light, etc from the timelapse.)

If anyone else has done this, please give me some advice.

I have a Canon 5D Mark II, and a Canon HVX-200 if that helps with any advice with framerates or use of an intervalometer, etc.

Thanks in advance!

-Matt


Wed Dec 01, 2010 12:40 pm
Profile
User avatar

Joined: Tue Jul 08, 2008 12:36 pm
Posts: 1787
Location: Antarctica/California/New Zealand
Post Re: Timelapse with real-time compositing
It depends on how much interaction you need between the two shots.
Basically the easiest way is green screen though.
You could also do it with the 5D2 locked off to shoot the time-lapse then shoot real time video with the same setup and do a split screen effect. Easy to do with After Effects.

_________________
Anthony Powell
"Antarctica: A Year On Ice" Feature Film
Vimeo Youtube Photos
Twitter Instagram Google+
Facebook Facebook Movie Page


Wed Dec 01, 2010 9:00 pm
Profile
User avatar

Joined: Tue Aug 26, 2008 3:30 am
Posts: 824
Location: Sydney, Australia
Post Re: Timelapse with real-time compositing
When you shoot your green screen foreground with talent, make sure you use the same lens and settings with the same camera set up( lens height, tilt angle, etc.) to keep a correct perspective when you go to shoot your background timelapse. (unless you want weird perspectives of course)

Regarding intervals, if you shoot your timelapse background at say 1 frame per second then your onscreen B/G action will be x 30 realtime. (25 for PAL shooters)

This is a non-scientific basic explanation of the process: http://www.videojug.com/webvideo/how-to-shoot-on-a-green-screen-effect


Wed Dec 01, 2010 10:41 pm
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore. pozycjonowanie