Preload hyperlapse into VT starting during transiction - walkthrough simulation

hi, i would like to implement this:
insert a time lapse images:
- preloaded;
- that starts on clik over an hotspot linked with another pano;
- during the hyperlaspe sequences the new pano starting to preload

so is there somone having implement some thing like this?

i'm starting this project. i have created two complete pano:
- the first pano;
- the next pano;

- 30 incomplete pano with only one circular images (one shot each five centimeters from first pano to next pano)

so i have extracted 32 rectilinear images with this parameters: 120 (horizzontal fov); -118,906 (yaw); -0.0806 (pitch); 1.855 (rol). i know that i can use this tutorial (https://krpano.com/forum/wbb/inde…d&threadID=7272)
to convert this parameters for krpano visualization (ath, atv width rotate) but i would like to convert this parameters to get view of first pano (hlookat, vlookat, fov) equal to size of rectilinear image:
is there a way to convert yaw, pitch, rol, fov -->in--> hlookat, vlookat, fov?

so nobody has never try to coincide pano view with a video or an rectilinear extraction?