A video doorbell or security camera is three decisions wearing one shell. The first is the SoC: an Ingenic T-series, SigmaStar, Anyka or Fullhan video chip that encodes the stream and, increasingly, runs person-and-package detection on the device. (Sanctions pushed the category off HiSilicon years ago; the replacements are now the reference designs.) The second is the sensor, a SmartSens, GalaxyCore or Sony part that decides night vision and dynamic range. The third, and the one buyers underrate, is the cloud stack: the app, the servers, the notification pipeline. A battery doorbell adds a PIR-wake companion MCU so the main chip sleeps between visitors; that power design is where a good house earns its keep.
The category splits by mounting, not by chip. The wired video door phone (intercom, apartment systems, the installer trade), the battery WiFi doorbell in the Ring mould, the outdoor camera (bullet, PTZ, now solar-and-4G for anywhere without wiring), and the indoor pan-tilt. The live frontiers are on-device AI (person, pet, vehicle, package), AOV always-on-video at battery power budgets, and local storage sold as a feature rather than an apology, because the cloud is precisely what European buyers have learned to distrust.
The reference-design tell here is the app. Hundreds of Amazon brands ship the same camera running the same white-label cloud, one app under a thousand names, and when researchers pulled the thread on one such Shenzhen platform the finding was blunt: millions of streams, one company nobody had heard of, no GDPR compliance in sight. That is the story a buyer must engineer against, and it is why the serious houses now sell Tuya integration, EU data residency or a fully local mode as first-class features.
For export the gates stack higher than anywhere else in this atlas: CE and RED for the radio, RoHS, then GDPR reaching into firmware and cloud choices, the EU Cyber Resilience Act arriving on top, and for the US the NDAA question that took Hikvision and Dahua (both Hangzhou) off federal shopping lists. The apex splits between the West (Ring, Nest) and China’s own brands (eufy by Anker, TP-Link Tapo, Aqara, Reolink, EZVIZ), with the biggest hireable ODM, Meari, in Hangzhou outside this delta. The houses below are the PRD’s answer.