One thing you can try is using ChatGPT to build what you want. I was able to have it write me a few expressions that worked well enough. It will even make comments on the code to tell you what each line does.
I know this is not the best way to go about it but it will get you immediate results and you might learn from it.

The post is 9 years old.

The camera moves too fast in those shots to do anything other than eyeball it. It is my impression that this technology works because the cameras are all tracked and calibrated on site and fed into the system that creates graphics like these.

Everything you mentioned is pretty basic. Are you sure you need an expression? What you are talking about is pretty much exactly how parenting works in AE. All child objects can be moved independently and when you move the parent objects the child objects follow.

Here you go. This is with the latest version of AE. If you want to discuss the details, me and a few others hang out in an AE help group on Discord: https://discord.com/channels/1144491754817597581/1144491754817597584

I hope this helps.

I have had to do this many times. The problem is that for a block of text like that it will be very time-consuming. What you want to do is create a new shape layer or solid and basically draw out all of the curves to as you would if you were writing with a pencil in one continuous line. Draw the loop of a “t” and then draw the cross part of the…

Read more

ALT click your ‘child’ layer position and pick-whip any other layer’s position keyframe. Now when the ‘parent’ and ‘child’ are linked together.
You can also use an expression on a null layer and link everything to that.