I assume that you want a picture-in-picture where the image continues to take up, let's say, one quarter or less of the screen, but you want to zoom back up to 100% and yet have the image still take up one quarter or less of the screen. Is that right?
If you put the image into a sequence that is the size of one quarter of the frame (half of each dimension), you can start with the picture scaled down to fit into the smaller frame, and then zoom back up to 100%,using the position parameter to make sure to have the part of the picture you want to show as the center of the smaller frame. Then just drop that sequence on to the original sequence. You can still resize the nested sequence even smaller if you wish just by using the Scale parameter of the nested sequence
Like this? I just put the image in a small sequence (960X540) and used the titler to but a frame around it. When I got it into the main sequence I realized I wanted it smaller still, so I just positioned it and scaled it to where I wanted it.
I started to type this out and realized it would be easier to show you via a tutorial. Then my tutorial software decided to fail me for the first time.
So here goes.
Assuming your video is 1080p 30fps.
Create a sequence for the picture using custom settings of 960X540 which is one quarter of the size of the HD frame. Put your image on that sequence. Put a title over it using a white rectangle, but uncheck the "Fill" and add an inside stroke - make it white.
Use keyframes to zoom in or out on the image over time. Remember to use Ease Out and Ease In..
Go back to the original sequence with the video and grab the newer sequence of of the Project panel and drop it above the video track on the timeline. Use Motion to scale it down if needed and to position it on the frame.
Thanks for your recent video tutorial! That was so helpful. I managed to follow your steps just as you had in the video and was able to make what i needed perfectly. I am unsure how to record my video and then paste it here as you did, but i wish you could see it, cause thanks to you, it looks crazy good!
Will be sure to holla at you if i get stuck again.