Method of overlaying caption in digital compression video code stream

A subtitle and video technology, applied in superimposing subtitles, superimposing subtitles in the digital compressed video code stream, can solve the problems of subtitle display impact, data redundancy, etc., achieve good visual effect, convenient implementation, and convenient effect
CN1561094AInactive Publication Date: 2005-01-05AMOLOGIC (SHANGHAI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
AMOLOGIC (SHANGHAI) CO LTD
Publication Date
2005-01-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to a method for overlapping captions in a digital compression video ASCII stream. The composite ASCII stream is finished by composite process of the system which composites audio, video compressed streams, starting time of captions and a caption data region including caption end time, a display region, a forced display region and a character lattice data composite by its character documents and character lattice base. The command control file in the pilot system is composed of a caption coloring board, and a mixed degree control data generated by a disk generation system.
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Description

technical field

[0001] The invention relates to a method for superimposing subtitles, in particular to a method for superimposing subtitles in digitally compressed video streams. It belongs to the technical field of audio-visual communication. Background technique

[0002] With the dissemination of video information all over the world, the superposition of subtitles in various languages ​​has become an effective way to eliminate language barriers. At present, there are the following ways to superimpose subtitles and videos: (1) directly superimpose subtitles to the video layer before encoding. Although this is simple, the subtitles destroy the integrity of the video picture, and the user cannot freely select and close the subtitles. (2) Subtitles are stored in a separate file in the form of character internal codes. During video playback, the player reads the character internal codes, obtains display dot matrix information from the corresponding font library, and superimpos...

Claims

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