[Martin Brennand]

I’d recommend watching the quick 3-part series on the remove module here as a start: https://vimeo.com/108072190

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

You could probably do this quite quickly using mocha Pro’s remove module, using the illumination modelling options to add the right lighting back in.

It just depends on how much of the original ming creases in the jacket you need to keep.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

You’re right, this is a tough one to track! The main issue is the luminance shift as the women walks down the stairs.
Since the only available texture is the stair shadows, they vary when she walks down.

You could try crunching the colours to get a bit more contrast into the shadows. On your compressed clip you sent this was difficult due to the lossy image. Give it a try on your full res clip and see if it makes a difference.
You can do this either by relinking a color corrected clip, or by using the white and black reference fields in Log color space in the mocha Clip tab.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

Is it possible to send me the clip to test? This looks like it should be simple to track, so i’d like to replicate the issue.
martinb[at ]imagineersystems{dot}com.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

It may well be that you don’t have enough background to use. Try using the clean plate and “use clean plates exclusively” across the whole shot. You may need to employ the illumination modelling if there is any subtle shift of light.

If you can show a screengrab of your set up and the problem render I can also help troubleshoot.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

What are you settings for the remove? Are you using illumination modelling or a straight remove? Are you using a clean plate or the available background?

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

The more texture you can have on the card the better, unless you’re planning on using the white as a lighting overlay later.The best thing to do is try a test!

Also if the user is rotating the card a lot, you’ll want to use the Angle parameter in the tracking controls. This helps mocha see that the card is moving at a large rotation very quickly.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

Are you applying the corner pin match move directly to the text layer? This will probably not work.

Try applying the match move to the group (with the text layer inside) instead and it should distort correctly.
To make sure it matches the scene correctly you should also fix the resolution of the group to the dimensions of the footage.

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

If you’re just placing the insert directly on the screen you may not even need the green screen, as you can just mask or warp the insert to match the screen frame. If there is a unique look to the TV that means keeping the soft edges of the screen is important, then a green screen may be useful.

In terms of placing the actual screen element and making it look 80s, there are a number of ways to do this. You’ll have to consider whether you want to show any obvious interlacing and so on, but you can also deliberately down-res the footage first or degrade it in other ways using plugins.

AE has a few native effects that you play with to get the look, but there are also dedicated third-party plugins for stylising exactly the TV look you’re after here, such as the BCC Damaged TV effect in the BorisFX Stylise Unit bundle:
https://www.borisfx.com/products/continuum-units/stylize/

Martin Brennand | Product Manager | mocha – Imagineer Systems

[Martin Brennand]

You can do this in a number of ways, but it depends on a few factors:

1. Is the camera moving in the shot?
If so you will need to track the motion of the television afterwards to match-move the screen insert perfectly.

2. Is the television a modern TV or an old one?
This is important to determine how much you’ll need to warp your screen insert to make it look realistic.

3. Do you need the footage being inserted on the TV to help light the room in any way?
If the lighting is important you may want to play your insert on the TV, then replace it with a clearer version afterwards in post.

4. Do you need to keep any reflections on the screen?
If so you may not want to place tracking markers or inserts on the TV.

Here’s some examples of me doing just this. I’m using mocha Pro here, but most of these can apply to After Effects and the bundled mocha AE as well:
https://www.youtube.com/watch?v=BBhjb3TSu-8

Martin Brennand | Product Manager | mocha – Imagineer Systems

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