Avid DNxHD codec

Avid DNxHD (Digital Nonlinear Extensible High Definition) is a lossy high-definition video post-production codec engineered for multi-generation compositing with reduced storage and bandwidth requirements for audio, video and metadata (including subtitles and closed captioning) source[…]

What is Windows Media Player?

Windows Media Player (WMP) is a media player and media library application developed by Microsoft that is used for playing audio and video and for viewing images (including subtitles and closed captioning) on personal computers.[…]

What is MPEG-1?

MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio and metadata such as subtitles and closed captioning without excessive quality loss,[…]

What is Theora format?

Theora is a free and open lossy video compression format from the Xiph.Org Foundation. It can be used to distribute film and video online (as well as audio and metadata, including subtitles and closed captioning)[…]

WebVTT and SRT files

WebVTT (Web Video Text Tracks) is a file format that allows editing of external text tracks. Used in conjunction with HTML5’s <track> element allows information such as subtitles, closed captioning and descriptions for a media[…]

What is SAMI?

SAMI (Synchronized Accessible Media Interchange) is a file format designed to deliver synchronized text such as closed captioning, subtitles, or audio descriptions with digital media content. SAMI was released by Microsoft in 1998. The files[…]

What is Adobe Flash Player?

Adobe Flash Player (labeled Shockwave Flash in Internet Explorer and Firefox) is freeware software for viewing multimedia, executing rich Internet applications, and streaming video, audio and metadata content such as subtitles and closed captioning created[…]


CEA-708 (Consumer Electronics Association-708), also called EIA-708 is the current standard for closed captioning (textual transcription of the audio content of a program) for Advanced Television Systems Committee (ATSC) digital television (DTV) streams in the[…]