DVTproppar

DVTproppar is a term used in digital video technology to denote a structured collection of property parameters that describe how a digital video transport system handles and conveys video data. It typically appears as a named block within a DVT metadata schema to support interoperability between equipment and software.

The term combines DVT, shorthand for digital video transport, with proppar, a contraction of property parameter. In practice, DVTproppar describes the configurable fields that govern video format, timing, and transport behavior within a DVT container or stream.

Key components commonly described within a DVTproppar block include:

- color_space and bit_depth

- resolution and aspect_ratio

- frame_rate and timecode

- chroma_subsampling and dynamic_range

- transport_metadata such as clock_reference, packetization_mode, and buffering_policy

Interoperability and standards: there is no universal standard for DVTproppar across all vendors, so deployments vary. Organizations typically document their schema in product manuals or white papers, and the parameters may be optional or conditional depending on the transport mode (for example, linear versus adaptive streaming) and profile. In practice, DVTproppar is used to enable consistent interpretation of video data across devices and software that implement the same DVT metadata model.

Example: a representative DVTproppar block might specify color_space=BT.709, bit_depth=10, resolution=1920x1080, frame_rate=30, aspect_ratio=16:9, chroma_subsampling=4:2:2, dynamic_range=SDR, timecode=00:00:00:00, clock_reference=200 MHz, packetization_mode=fragmented, buffering_policy=low-latency. This illustrates typical fields without asserting a universal standard.