36 CFR Part 1194 - Proposed Information and Communication Technology (ICT) Standards and Guidelines NPRM - Preamble

411.1.2 Pass-Through of Closed Caption Data (Section-by-Section Analysis)

This section proposes that, where audio-visual players and displays process video with synchronized audio, cabling and ancillary equipment would be required to pass through caption data. High-definition multimedia cables (HDMI) carry audio and video signals, and are technically capable of passing through caption data; typically, however, caption data is not included with the audio-visual stream.