Quick Frame Transport (QFT)
HDMI® Quick Frame Transport (QFT)
Another highlight from the HDMI 2.1 specification’s multiple gaming and media features is Quick Frame Transport. QFT reduces latency for smoother no-lag gaming, and real-time interactive virtual reality.
QFT transports each frame at a higher rate to decrease “display latency”, which is the amount of time between a frame being ready for transport in the GPU and that frame being completely displayed. This latency is the sum of the transport time through the source’s output circuits, the transport time across the interface, the processing of the video data in the display, and the painting of the screen with the new data. This overall latency affects the responsiveness of games, such as how long between a button is pressed to the time at which the resultant action is observed on the screen.
While there are a lot of variables in this equation, not many are adjustable from an HDMI specification perspective. QFT operates on the transport portion of this equation by reducing the time it takes to send only the active video across the cable. This results in reduced display latency and increased responsiveness.
HDMI® Licensing Administrator, Inc. (HDMI LA) is the agent appointed by the HDMI Forum to license Version 2.1 of the HDMI Specification and is the agent appointed by the HDMI Founders to license all earlier HDMI Specifications.
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