Re: Film a tv, then put a movie in it... in post. How? by Ben Heusner on Feb 18, 2008 at 7:21:26 am
Hi,
I'll give the Cliff Notes version:
i) Corner pinning
ii) Maybe add a Distort to match the screen original
iii) Use a blend mode to keep the highlights - Note: If you're doing this then keep the screen as neutral grey as possible.
Good luck with your project,
Ben
Curious Turtle Professional Video Training | Editing |Support
Re: Film a tv, then put a movie in it... in post. How? by Dave LaRonde on Feb 18, 2008 at 4:55:41 pm
Another way to do this might be to use a 3D motion tracker like Syntheyes. It can generate a path for camera used in a 3D application, and you'd then composite the resulting 3D movie in AE. Your task would then become:
• positioning the TV screen in the 3D application properly
• making the movie look like it's on TV. I'd do it by shooting the TV set head-on and fairly large, lit as it will be for the dolly shot. You could then mask around the TV tube, copy the mask to the layer below, which would be your movie, and then add a blending mode like Add, Screen, Overlay, etc. to the masked TV layer.
Re: Film a tv, then put a movie in it... in post. How? by Joe Moya on Feb 18, 2008 at 8:47:34 pm
No matter the process you use to motion track and corner pin (personally, I use Mocha for it's versitality)...
How easy the motion tracking and adding of CG effects will be is dependent upon how you film the scene.
Therefore, I would strongly suggest you get profficent at motion tracking and corner pinning before you film.
A ton of work can be saved if you film it from a perspective of having experience in doing needed CG work needed with motion tracking and corner pinning.... which also means, knowing the limitations of your tracking software.
Re: Film a tv, then put a movie in it... in post. How? by david bogie on Feb 19, 2008 at 1:24:12 am
Getting the movie pasted into the screen is easy compared to shooting the scene so it appears the television set is on. This gets really complicated if the movie that she's watching has specific action or effects scenes that would change the light on her or the room dramatically.. I promise you, it's easier to do the motivational lighting while shooting that it is to put it in as an effect in post.
bogiesan
This is my standard sigfile so do not take it personally: "For crying out loud, read the freakin' manual."
Re: Film a tv, then put a movie in it... in post. How? by Benjamin Thompson on Feb 19, 2008 at 6:13:17 pm
I worked on a project very similar not too long ago. We did have a shot where we dollied back (I believe that it will work the same for your dolly move). I tracked the footage using position and scale tracking...surprisingly AE tracked it very well. I applied the tracker info to a null and parented my footage to the null. The movement was dead on. As far as replacing the footage use a mask to cut out the tv screen, place your replacement footage as a layer below the tv and scale accordingly. Then use some of the tips from the tutorials to make it look like a real tv ex (lens distortion, shadowing...) Good Luck. You could even add some random footage on top with the opacity very low to give the effect of the glass reflecting its environment.
Hope some of this helps.
Ben
Ben-Jamin Productions
Motion Graphics and Compositing
