About interfacing webcam to STM32

I want to use the STM32F4 microcontroller to receive a video stream then stream it over ethernet with the rtsp protocol .

I need you guys to tell me wich circuit would be the best for interfacing with STM32.

Can I interface a webcam with the STM32 via the USB OTG ? (I have basic ideas about usb protocol, but the problem is that the webcam I have is not supported by linux so there is no code source for the drivers, so no Endpoint references ...)

Is it possible to define Endpoints and vendor-specific commands that trigger the bulk transfer of video ( streaming ) by debugging the usb traffic ?

Or, would you recommend another circuit that provide video stream simple to interface with the STM32 .

I know this is kind of crazy thing to do, but I'm asking how hard it's gonna be ?

Let me know what you think of this project ?

PS: The rtsp part of the project is not the purpose of this topic .

Thanks in advance.

I seem to remember ST announcing an embedded uLinux type project for the ARM a while ago, prolly better to investigate that sort of route so you can put your efforts where they matter most. I see no point in re-inventing the wheel. Although it seems to me to be a perfect application for a pi or similar off the shelf board

Thanks for your answer
Unfortunately embedded Linux is not option here so I have to do this from scratch .
The web cam interfacing might be the issue here so i considered interface a camera circuit instead .
Would you recommend a chip that works great on an STM32F4 ?