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  1. Functional Accessibility Requirements
  2. 6. ICT with two way voice communication
  3. 6.5: Video Communication
  4. 6.5.4. Synchronization between audio and video

6.5.4. Synchronization between audio and video

Where ICT that provides two-way voice communication includes real-time video functionality, the ICT should ensure a maximum time difference of 100 ms between the speech and video presented to the user.

Testing methods

Type of compliance Measurement
Pre-conditions
  1. The ICT provides 2 way voice communication.
  2. The ICT includes real-time video functionality.
Procedure
  1. Check that the time difference between the speech and video presented to the user is equal to or less than 100 ms.
Result  Pass: Check 1 is true
 Fail: Check 1 is false

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