[Jim Dodson]

Jack–

I know this is an old thread, but I’m hoping you’re still subscribed…

I have a car pulling up to a house — no camera movement — and I am applying a 200% speed change.

As the car pulls up to the curb, the lawn in front of the house morphs and is affected by the car’s movement. So I did a very precise roto around the car and used that roto layer as a matte.

Unfortunately, the matte has no effect on reducing the artifacts… You had suggested a loose roto… Is my roto too tight? (It is precise to the car).

Thanks!

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

Did you try enabling time re-mapping for the layer that isn’t long enough??

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

** Success !!! **

Thanks so much Dan
(and Kevin!)

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

Kool! That worked…

Just one more wrinkle:

And it’s kinda tricky.

Editing startfeet & startframe are fine (instead of a slider) but…

It would be great if I could also input a “starting cadence number” where we can enter where we are in the cadence that we are beginning…

Basically entering a: 1,2 or 3.

So that the counter knows if it’s time to increment the frames to 21 or 20 on this cycle.

Basically if I enter a 3 it knows on it’s very first time in counting frames it should go to 21; a 2 means the 2nd time it goes to 20 it should go to 21 and a 1 is the normal cadence…

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

Man, Dan — you are awesome — thank you!!

I have three questions…

1) When you say “text layer expression” — which effect are you suggesting? (Basic Text? Or numbers?)
I tried numbers and I got a divide by zero error…

2) For the rounding, should we be rounding startframe + startfeet? or fts + frs?

3) I’m not sure where to add the mathround portion….

I’m really lame at expressions and their usage… sorry!!

And thanks again!

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

I was suggesting you use bezier points in After Effects.

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

If that doesn’t work, here’s a great tutorial on the subject of banding over at Grey Scale Gorilla …

https://greyscalegorilla.com/blog/2009/10/how-to-remove-banding-artifacts-in-after-effects/

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

Great suggestion Steve!

Additionally, https://custom.netcarshow.com/Fiat/2010-500C/58.htm has a more flat perspective wheel…

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

Here’s a thought:
Are you sure the quicktime isn’t freezing during playback?

Try moving the playhead to the middle of the clip and pressing play from there (to see if it might actually be fine — but simply QuickTime is freezing up during playback)…

What format are you rendering out to and what are the dimensions of your clip?

Jim Dodson

8 Core Intel — Mac – OSX

[Jim Dodson]

You might want to try again with color stabilizer — i’ve used it successfully for this very dilemma. I’m pretty sure you want to click the blacks onto a black within the flickering area (not outside it) — you can also try giving the effect a guide frame by parking on a good frame and clicking on the words “set-frame”… also you might have to keyframe/animate the white/mid/black points to chase the representative color(s) around…. Those FLASHES of color tell me that your representative points are not themselves stable throughout the shot…. And of course, the rest of the frame (outside the monitor) will also get affected and will look all messed up so you’ll have to mask out everything but the monitor area — also might experiment with just “brightness” (only one reference level to deal with) or levels (2 reference points)…

Jim Dodson

8 Core Intel — Mac – OSX