Now, I know this is an old thread (LOL), but ...
I just spent two hours trying to get this to work.
I have a FTDI programmer and an ESP32 Camera module. I wired it exactly as indicated in the thread.
Finally, determined. I could only program the esp32 at 3.3 volts. At 5 volts I got a bunch of errors.
But, once programmed the B4R App only ran at 5 volts not the programming voltage of 3.3 volts.
I am pretty sure I downloaded and did this a year ago and did not have the same problem.
I reread post #2 maybe that is what Miker2069 is indicating, but I didn't read it that way.
I.E Program at 3.3V and run Camera Board/App at 5 Volts.
Anyway if anyone else tries this and has a problem that might be your issue.
Thanks Miker2069, code works great as is !
B4X it is all about the journey not the destination. LOL