The provided text describes the specifications for an SDI (Serial Digital Interface) signal input on a piece of audiovisual equipment, likely a video switcher or routing device such as Blackmagic's Videohub Smart Control Pro.

Key features include:

1. Support for multiple SMPTE standards:

- SMPTE 259M

- SMPTE 292M

- SMPTE 296M

- SMPte 372M

- SMPTE 424M (also known as HD-SDI, used in high-definition applications)

- SMPTE 425M level A and B

2. Video payload identification:

- Ancillary data is supported according to the SMPTE 352M standard.

3. Input video signal compatibility:

- The device can automatically detect and switch between different SD-SDI, HD-SDSI (including single-link 1.5G, dual-link 6Gb/s), 12Gb/4K/UHD 12G-SDI, and DVB-ASI input signals on each of its input ports.

- This means that any one or combination of these standards can be connected to the same input port simultaneously.

4. SDI Color Space:

- The device automatically detects and switches between different color space formats (SD/HD 8/10-bit YUV 709, 422, 444; HD-SDI also supports 12bit RGB) on each of its input ports.

- This allows for switching between various television standards with minimal or no need to reconfigure the device.

5. SDI Color Precision:

- The supported color precision includes:

a. YUV 4:2:2 and RGB 444 in all HD modes (720p,1080i/59.97/50;1080p)

b. UltraHD up to 2160 at 30 frames per second

c. 4K UHDTV-1 (Stereoscopic) DCI mode only: YCbCr 422 and RGB 444.

6. SDI Clock Source:

- The device can auto-synchronize its internal clock source with any one of the input signals connected to it.

- If no signal is present on all inputs, an embedded reference or a free-running crystal oscillator will be used as a fall-back.

7. SDI Word Sync/Black and/or Tri Level/Locked & Free HDSDI Input:

- Each input can either sync from one of its four BNCs via word clock, black tri-level (or video) or genlock.

- It is also possible to supply an external reference signal on a 75 Ohm SDI differential pair instead.

8. SDI Video Delay:

- The device allows the video delay between any two input and output ports of up to 125 frames in increments of one frame, which can be used for various purposes such as color phase adjustment or de-syncing.

9. DVB-ASI Input/Output:

- Each port on this interface can operate either as an SDI input (as per SMPTE292M) or as a Serial Digital Interface output at 1x to 10 times the incoming clock frequency, which means that one of these ports will be able to handle any combination of eight individual HD/SD-SDI video signals in addition to two other DVB-ASI serial video input and/or outputs.

This text provides an exhaustive list of features related to SDI signal compatibility on a specific piece of equipment.

Blackmagic videohub smart control pro