What is mean "input latency"

[RYUNHYEON KIM]

Hello. 

I found a problem with cert performance during testing for youtube pre-cert. 

To pass YouTube In-App Performance Testing: Automated Performance Latencies, 

Input latency should be less than 200ms, but a very large value is measured.

(the rest of browse-to-watch, tile to tile, row to row are passed). 

I'd like to know exactly what Input Latency means.  

Is there anything reduces input latency?

Regards

RH Kim 

[Toan Pham]

Input latency is the time, in milliseconds, from when Cobalt receives a keypress event to when the animation is started. This is usually measured while browsing video tiles using the right keypress which initiates a tile-to-tile animation.

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