Hi @surendra121,
May I check whether you are designing your own PCB? If so, you may want to review the hardware design guide before proceeding with the design:
We can provide a hardware review after your PCB design is completed.
Based on sensor.h, currently only GC4653 is supported.
If support for GC4663 is required, we will need to conduct an internal review to assess feasibility. To support it, bringing up the sensor is needed, similar to what this user did (Trying to use a JX-F57 camera sensor, how can I do so?).
Yes, it can perform face detection. You can refer to the FreeRTOS SDK for example.
Application Note: NN — AmebaPro2's Documentation v0.1 documentation
As for reading external camera video stream, may i know what kind of external camera you are looking for? Currently the camera can only be connected via MIPI connector.
PM team may need to get involved if you are interested in the camera.