A laser pointer at 2B FPS [video]

It would look something like this[1] except with slower visual propagation.

Note that this camera (like any camera) cannot observe photons as they pass through the slits -- it can only record photons once they've bounced off the main path. Thus you will never record the interference-causing photons mid-flight, and you'll get a standard interference pattern.

[1]: https://www.researchgate.net/figure/The-apparatus-used-in-th...