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MPEG-4 Part 17, or MPEG-4 Timed Text (MP4TT), or MPEG-4 Streaming text format is the text-based subtitle format for MPEG-4, published as ISO/IEC 14496-17 in 2006. [1] It was developed in response to the need for a generic method for coding of text as one of the multimedia components within audiovisual presentations.
The MP4 file format defined some extensions over the ISO Base Media File Format to support MPEG-4 visual/audio codecs and various MPEG-4 Systems features such as object descriptors and scene descriptions. Some of these extensions are also used by other formats based on the ISO base media file format (e.g., 3GP). [1]
A standardized (or in some cases de facto standard) video file type such as .webm is a profile specified by a restriction on which container format and which video and audio compression formats are allowed. The coded video and audio inside a video file container (i.e. not headers, footers, and metadata) is called the essence.
Interoperability for timed text came up during the development of the SMIL 2.0 specification. Today, incompatible formats for captioning, subtitling and other forms of timed text are used on the Web. This means that when creating a SMIL presentation, the text portion often needs to be targeted to a particular playback environment.
Date: Monday, Nov. 27 Time: 8:15 p.m. ET Game: Chicago Bears vs. Minnesota Vikings TV Channel: ABC, ESPN Streaming: Hulu + Live TV What channel is the Chicago Bears vs. Minnesota Vikings game on ...
How to watch the Vikings vs. Bengals game: Date: Saturday, Dec. 16. Time: ... here's what we recommend to watch the Vikings vs. Bengals game today: Where to stream the Vikings vs. Bengals game?
Unsurprisingly, the odds for the NFL London game favor the Vikings over the Jets. The Jets play the Vikings at 9:30 a.m. ET, airing in the U.S. on NFL Network and stream on NFL+ (on mobile).
Lossy formats Audio compression format Algorithm Sample rate Bit rate Latency CBR VBR Stereo Multichannel; AAC: MDCT, Hybrid Subband (AAC-HE) 8–192 kHz, [53] also: 7.35 kHz, but used rarely. 8–529 kbit/s (stereo, 44.1 kHz) 8–576 kbit/s (stereo, 48 kHz) 20–405 ms [54] Yes Yes Yes: Dual, Mid/Side, Intensity, Parametric Yes: Up to 48 ...