Step by step how to link background movemts in video 2 to video 1 ae cs6

Question

Never used after effects before  I have a video of a rock sticking out of the ocean  I ultra keyed the sky  and brought clip of the moon.
Ocean sceen is a bit shaky  and  so when you see moon video in background it looks great til ocean vid moves.
Can you please give me the step by step on how to do this   haven't found any tutorials that helped.
Please post and send  to [email address removed] Thank you so much

Answer 1

I'm not trying to be anything but helpful so please don't take offence.
Step 1: Plan every aspect of your shot by deciding what you want to do and then list all the potential problems.
Step 2: Carefully design the production of the shot considering all solutions then decide on the simplest solutions for each problem.
Step 3: Carefully and skillfully shoot the elements and then conform them the production plan in step 2.
It sounds to me like you came across a shot of the ocean with and you'd like to add a moon to the shot. Even though you are kind of going about this backwards the same steps apply.
The same steps apply.
First step: The shot of the ocean is shaky, the camera isn't locked down. The shot of the moon is. So what is the easiest way to combine the two.
Second step: I can fix the problem by removing the camera motion from the shot of the ocean or adding the motion to the moon. I can combine the two shots by creating a matte with a couple of dozen techniques. From what you've said you've chosen to key out the sky. I probably would have keyed out the moon or simply used a blend mode to add it to the ocean shot. Without seeing either I can't tell what would be easier. If the camera is fairly stable for the ocean shot it's probably easier to remove the motion or stabilize the footage, but it may be more interesting to add movement to the moon.
Third Step: Track the shot of the ocean. Without seeing the shot I can't tell you which tracker would be best. There are at least 6 possible solutions inside AE and dozens more with 3rd party software. Once you get a good track decide what to do with it. If there's some kind of stable plane in the shot (like the shoreline) I'd probably track that plane in Mocha, then add the motion of that track to the moon. Then I'd lay the moon on top of the footage so that both were shaky.
So there you have it. 3 simple steps to a successful shot. The problem with my answer is that without seeing your footage and talking more about what you want to achieve I can't give you any better answer. There are just too many ways to do it. BTW, all of them require more than a basic knowledge of After Effects.