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Guide to Defining Video Quality Requirements

Revised May 29, 2012
Section 1 of 11 of step 3 -- Understand System Tasks and System Functions -- in the bar chart highlighing the 4-step process for definfing video quality requirements.

Video System Tasks

Three fundamental tasks provide the foundation for any basic video system. Each task includes functions requiring equipment that has a direct effect on the quality of the video, which means each piece of equipment has the potential to alter the video to a degree that impacts the video’s usability.

Full video system illustrating three core functions: acquisition, transmission, and display.
The Acquire, Deliver, and View tasks each include functions. Click a task or function in the figure for information.

The figure provides a reference model for core system functions, which support three primary tasks:

  • Acquire Video — Includes focus and capture functions, and may include a built-in CODEC, which can perform the processing function’s encoding/decoding operations. However, in some video systems, such as those used for surveillance applications, the encode operation might be performed in a separate IT space.

  • Deliver Video — Includes the processing, storage, and transport functions. Sometimes the acquire and view tasks include the processing function’s encoding/decoding operations.

  • View Video —Includes the display function and may include a built-in CODEC, which can perform the processing function’s decoding operation. However, in some video systems, such as those used for surveillance applications, the decode operation might be performed in a separate IT space.

The exact demarcation for each of the three tasks can vary from application to application due to integration of various functions within your equipment.

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Jumps to use case page. Jumps to use classes page. Jumps to the video system tasks page. Jumps to the video system functions page. Jumps to the recommendations tool for video requirements. Links to the transmission function page. Links to the acquisition function page. Links to the display function page. Links to the optics component page. Links to the image capture component page. Links to the processing component page. Links to the processing component page. Links to the transport component page. Links to the storage component page. Links to the processing component page. Links to the display component page. Button advances to the previous step in the process for determining video requirement recommendations. Button advances to the next step in the process for determining video requirement recommendations.