CTA TR-3

The purpose of this report is to document a common understanding of an implementation of SMPTE Timed Text (SMPTE ST 2052-1) [9] that meets the FCC’s “safe harbor” provision in § 79.103 (c) (11) [7]. This report describes the technical details of a media player capable of rendering closed captioning from file-based content when the captioning is delivered via IP protocols (e.g. via the Internet), for synchronized presentation with audio and video.