Hello,
We do not have any example code that could assist with this, but at a high level, you would want to take the video being recorded from the camera, convert the video to the .tsv format internally (different from what the TSV Converter does:
https://learn.tinycircuits.com/Kits/TSV-Converter-Tutorial/ ), and then display the .tsv video onto the screen.
You can start with the TinyTV program here:
https://learn.tinycircuits.com/Kits/Tiny-Video-Program/I will advise you that this isn't a trivial project, so it will take some serious software time to produce. It will also take some time to get a camera wired into the project.
I hope that points you in the right direction.
Thanks,
RĂ©na