Plug-in subtitle automatic synchronization method and device

A technology of external subtitles and automatic synchronization, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as troublesome subtitle playback time, affecting users' normal viewing of movies, and poor synchronization with audio and video, etc., to improve viewing The effect of experience

Inactive Publication Date: 2016-08-24
LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the characteristics of the production of external subtitle files, the time stamp accuracy of external subtitle files is poor, resulting in poor synchronization w

Method used

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  • Plug-in subtitle automatic synchronization method and device
  • Plug-in subtitle automatic synchronization method and device
  • Plug-in subtitle automatic synchronization method and device

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0016] The first embodiment of the present invention relates to an automatic synchronization method for external subtitles, the specific process is as follows figure 1 shown, including the following steps:

[0017] Step 10: extract the audio part of the video file, and decode the audio part to obtain pulse code modulation d...

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Abstract

The invention relates to the technical field of video play and discloses a plug-in subtitle automatic synchronization method and device. The method comprises the following steps: extracting an audio portion of a video file, and carrying out decoding on the audio portion to obtain pulse coding modulation data; dividing the pulse coding modulation data into audio clips, and classifying the audio clips; dividing the audio clips, which are classified as speeches, into short sentences, and determining the start time and end time of each short sentence; searching a match item in a plug-in subtitle file according to the determined start time and end time of the short sentences; changing the start time of the match item into presentation time stamp PTS of a current video, and updating the starting time of each item, the start time of which is larger than that of the match item, in the plug-in subtitle file according to the presentation time stamp. The display time of the subtitle file is allowed to be consistent with the play time of audio/video, thereby realizing automatic synchronization of plug-in subtitles and improving watch experience of a user.

Description

technical field [0001] The invention relates to the technical field of video playback, in particular to an automatic synchronization method and device for external subtitles. Background technique [0002] Subtitles (subtitles of motion picture) refer to non-image content such as dialogues in TV, movies, and stage works in the form of text, and also generally refer to the text of post-processing of film and television works. When making video works such as movies, video files and subtitle files can be integrated together, so that the subtitles that cannot be changed or removed during playback are called embedded subtitles. In some works, the video file and the subtitle file exist independently, and the required version of the subtitle file can be imported when the video is played. This type of subtitle file is called an external subtitle. Compared with embedded subtitles, external subtitles have the advantages of being flexible, easy to import, and will not damage video qual...

Claims

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Application Information

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IPC IPC(8): H04N21/439H04N21/488H04N21/43
CPCH04N21/439H04N21/4307H04N21/4394H04N21/4884
Inventor 蔡炜
Owner LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
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