The authentication mechanisms in ONVIF Profile V are quite extensive, and organizing all these modes during testing turned out to be quite a brain-twister.
The documentation covers both OAuth2 and Uplink authentication. Here, we will use Uplink as the main thread for our analysis. Uplink supports the following two modes:

HPro Client for macOS is now officially released, currently offering exclusive native optimization for Intel-based Macs. This release brings native GPU hardware acceleration and multi-modal AI intelligent search directly to your Intel Mac desktop. You can download the latest installation package at the Linkingvision Official Download Center.

H5S Video Platform v20.0 is officially released! This milestone update dramatically enhances remote configuration capabilities for the ONVIF protocol, allowing comprehensive control over back-end device video streams, image adjustments, and OSD overlays directly from the platform interface.

ONVIF recently released the RC version of Profile V, revealing some details. Today, we'll discuss Profile V and its relationship with Profile S/Profile T/Profile G/Profile M, as well as Profile A/Profile C/Profile D.

ONVIF has released the Release Candidate for Profile V, our new draft standard for cloud-based video, and it marks a significant milestone for the security industry. Profile V brings ONVIF’s brand-independent principle into the cloud, giving end users, integrators, and manufacturers a standards-based way to build cloud video systems that are not tied to any single provider. Conformant products from different manufacturers work together, and any ONVIF conformant product can be added or replaced without redesigning the whole system.