The back link uses 64byte packets with a 2/6 FEC encoding (so quite solid) at a low wifi rate (I think 1Mb). This is very WIP at the moment, but it proves that the ESP32 can definitely stream video ...
THIS CODE IS OBSOLETE * It needs to be updated to be compatible with changes to the ESP32 standard libraries. Also, if fine granularity control is required, it needs to use long int arithmetic instead ...