[mystified5016]

I'd go in a completely different direction from this.

I'm assuming the SD cards come from a fleet of dashcams or similar, and that the driver is responsible for turning in their card at the end of a run or whatever.

I'd deploy a fleet of tiny WiFi card readers. Just an ESP32 and a card slot. Each individual unit is not fast, but if you have a few dozen units running at once you could easily saturate the dedicated ingest WiFi network at each hub location. The readers are dirt cheap and the only supporting infrastructure required is WiFi and a bunch of 5v power adapters.

You'd have a rack of these guys next to the key locker or timeclock. Pick up your keys and a blank card, drop off your keys and card at the end of the shift. Could even get extra fancy and use LEDs to indicate which card is yours for the day, or flip on an error light when the card is worn out.

You probably don't need each video to transfer as fast as possible, more likely you just want maximum overall throughput. So just build a bunch of very cheap and slow nodes. On aggregate you should get decent performance.

[reginald78]

To bad they don't make micro Eye-Fi cards.

https://en.wikipedia.org/wiki/Eye-Fi