Hey Graham! For video you don't really need a sophisticated app like Replica4D because video by nature is linear, whereas Replica4D is interactive and simulates physics and lighting. What this means is, that you can easily produce a video in which your fish vanishes while your live actions make it seem like you removed it from the video. Money saved!
Please note, that for some reason effects involving video get less reactions than stuff jumping from static images (in social media apps); I extensively tested this and have a few theories. But that's my experience and one of the reasons I started Replica4D 5 years ago.

Thank you so much for your reply Steve, I really want to buy one of your apps but I'm Torn, between JOLT because it can be interactive between lots of people in real time, something that can be performed as a stage routine, but allso I like the idea of objects popping. Replica4D or JOLT omg I don't know. You say about the fish and video, you obviously have the knowledge,I would know what pc software to use, to make it work from a tablet, is this something you could do if I paid you. Only because I created this... and wanted the fish popping or swimmy out of sight and ends up in the bottle.. https://youtu.be/Xy7IKqrPBWY?si=_mBEukziGCArV-8j