CN106792114A - The changing method and device of captions - Google Patents
The changing method and device of captions Download PDFInfo
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- CN106792114A CN106792114A CN201611127290.1A CN201611127290A CN106792114A CN 106792114 A CN106792114 A CN 106792114A CN 201611127290 A CN201611127290 A CN 201611127290A CN 106792114 A CN106792114 A CN 106792114A
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- China
- Prior art keywords
- caption information
- subtitle file
- information bar
- caption
- captions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4856—End-user interface for client configuration for language selection, e.g. for the menu or subtitles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
- Studio Circuits (AREA)
Abstract
The invention discloses a kind of changing method of captions, methods described includes：Obtain the subtitle file that contains of video bag and parse, obtain caption information bar, the side-play amount in path and caption information bar according to the subtitle file sets up caption information data list；The switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；Meet pre-conditioned caption information bar in extraction caption information data list；The path identical caption information bar of lookup and to be switched subtitle file in the caption strips information extracted, and the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount；The caption data that will be read carries out output display.The invention also discloses a kind of switching device of captions.The present invention can improve the efficiency of switching captions.
Description
Technical field
The present invention relates to internet television field, more particularly to a kind of captions changing method and device.
Background technology
In many countries and regions, especially European some video content services business, in order to preferably be different language
The people of country provide video frequency request program service, and the captions of different language are all embedded in inside the video file of program.People
Watch program when, by remote control, carry out the switching of different language captions.
At present, the method for carrying out captions switching usually stops for the data of current subtitle sending into caching first, empties slow
Deposit space and empty the data that subtitle decoder module is cached by carrying out flush operations to subtitle decoder module；Then,
The data of to be switched captions are sent into spatial cache, the data of spatial cache are sent into subtitle decoder mould by data cache module
Block；Then, subtitle decoder module is decoded after the data for receiving to be switched captions.To decoded caption data
After being synchronized in time with audio or video, output to output module；Finally, output module receive it is decoded
After caption data, output display, captions finishing switching are carried out.Captions are switched over through the above way, it is impossible to which captions are broadcast
Putting the time is quickly positioned.
The content of the invention
Changing method and device it is a primary object of the present invention to propose a kind of captions, it is intended to which solution cannot be to captions
Reproduction time carries out the technical problem of quick positioning.
To achieve the above object, a kind of changing method of captions that the present invention is provided, the described method comprises the following steps：
Obtain the subtitle file that contains of video bag and parse, obtain caption information bar, path according to the subtitle file and
The side-play amount of caption information bar sets up caption information data list；
The switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；
Meet pre-conditioned caption information bar in extraction caption information data list；
The path identical caption information bar with to be switched subtitle file is searched in the caption strips information extracted, and is obtained
The address offset amount of the caption information bar is taken, the caption data of the address offset amount is read；
The caption data that will be read carries out output display.
Alternatively, the step of meeting pre-conditioned caption information bar in the extraction caption information data list wraps
Include：
Obtain the video data current display time stamp in playing；
By between at the beginning of the caption information bar in the timestamp and caption information data list with the end time point
Do not contrasted；
If there is the time started less than or equal to timestamp and end in the caption information bar in caption information data list
Time more than or equal to the caption information bar of timestamp, then extracts the caption information bar；
If being less than or equal to timestamp and end in the absence of the time started in the caption information of caption information data list
Time more than or equal to the caption information bar of timestamp, then extracts and the timestamp is separated by nearest caption information bar.
Alternatively, the step of caption data that the side will read carries out output display includes：
The to be switched subtitle file of output display is carried out described in obtaining, the to be switched subtitle file is parsed；
The caption information data of the to be switched subtitle file is obtained, current play time is obtained and is stabbed and described will work as
It is compared successively with the end time between at the beginning of the caption information bar of preceding reproduction time stamp and the to be switched subtitle file；
Time started in the caption information bar of the to be switched subtitle file is less than or equal to the current play time
Stab and current play time stamp carries out rendering display captioned test information less than or equal to the caption information bar of end time；
Word by the end time in the caption information bar of the to be switched subtitle file more than current play time stamp
Curtain information bar is removed, and searches next caption data；
Word by the time started in the caption information bar of the to be switched subtitle file less than current play time stamp
Curtain information bar caching.
Alternatively, it is described to obtain the subtitle file that contains of video bag and parse, caption information bar is obtained, according to captions text
The step of path of part and the side-play amount of caption information bar set up caption information data list includes：
The subtitle file that video bag contains is obtained, and the subtitle file is preserved into caching, the subtitle file includes
The path of subtitle file content and subtitle file；
The subtitle file is parsed, according between at the beginning of every captions and captions are split into multiple captions by the end time
Information bar, obtains side-play amount, time started, end time, content of text and the renderer property of caption information bar；
The side-play amount in path and caption information bar according to subtitle file sets up caption information data list, and by captions
Between at the beginning of information bar, end time, content of text and renderer property preserved into caption information data list；
The time attribute of all caption information bars for parsing of traversal, between extracting at the beginning of caption information bar and terminates
It is time, described with the time attribute name of caption information bar according to ascending sort is carried out between at the beginning of the caption information bar
Caption information bar is simultaneously preserved into caption information data list.
Alternatively, methods described also includes：
Judge to be switched subtitle file whether be current language subtitle file；
If so, then continuing to output the subtitle file of display current language；
If it is not, then obtaining to be switched subtitle file.
Additionally, to achieve the above object, the present invention also provides a kind of switching device of captions, and described device includes：
Module is set up, for obtaining subtitle file that video bag contains and parsing, caption information bar is obtained, according to the captions
The path of file and the side-play amount of caption information bar set up caption information data list
First acquisition module, the switching subtitle instructions for being triggered according to user obtain the path of to be switched subtitle file；
Extraction module, meet pre-conditioned caption information bar in caption information data list for extracting；
Read module, for searching the path identical word with to be switched subtitle file in the caption strips information extracted
Curtain information bar, and the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount；
First display module, the caption data for that will read carries out output display.
Alternatively, the extraction module includes：
Acquiring unit, for obtaining the video data current display time stamp in playing；
Comparison unit, for by between at the beginning of the timestamp and the caption information of caption information data list in knot
The beam time is contrasted respectively；
First extraction unit, if for exist in the caption information of caption information data list the time started be less than or wait
In the caption information bar of timestamp and end time more than or equal to timestamp, then the caption information bar is extracted；
Second extraction unit, if in the caption information of caption information data list in the absence of the time started be less than or
Caption information bar equal to timestamp and end time more than or equal to timestamp, then extract and the timestamp be separated by it is nearest
Caption information bar.
Alternatively, first display module includes：
First resolution unit, for obtaining the to be switched subtitle file for carrying out output display, by the to be switched word
Curtain file is parsed；
Comparing unit, the caption information data for obtaining the to be switched subtitle file obtains current play time
Stab and by the current play time stamp and the to be switched subtitle file caption information bar at the beginning of between and at the end of
Between be compared successively；
Rendering unit, it is described for the time started in the caption information bar of the to be switched subtitle file to be less than or equal to
Current play time is stabbed and current play time stamp carries out rendering display less than or equal to the caption information bar of end time
Captioned test information；
Searching unit, for the end time in the caption information bar of the to be switched subtitle file currently to be broadcast more than described
The caption information bar for putting timestamp is removed, and searches next caption data；
Buffer unit, for the time started in the caption information bar of the to be switched subtitle file currently to be broadcast less than described
Put the caption information bar caching of timestamp.
Alternatively, the module of setting up includes：
Acquiring unit, for obtaining the subtitle file that video bag contains, and the subtitle file is preserved into caching, described
Subtitle file includes the path of subtitle file content and subtitle file；
Second resolution unit, for parsing the subtitle file, according between at the beginning of every captions and the end time will
Captions split into multiple caption information bars, obtain the side-play amount of caption information bar, the time started, the end time, content of text and
Renderer property；
Unit is set up, the side-play amount for the path according to subtitle file and caption information bar sets up caption information data
List, and by between at the beginning of caption information bar, end time, content of text and renderer property preserved to caption information data
In list；
Storage unit, the time attribute for traveling through all caption information bars for parsing extracts caption information bar
Time started and end time, according to carrying out ascending sort between at the beginning of the caption information bar, with caption information bar when
Between caption information bar described in attribute names and preserve in caption information data list.
Alternatively, described device also includes：
Judge module, for judge to be switched subtitle file whether be current language subtitle file；
Second display module, if being the subtitle file of current language for be switched subtitle file, continues to output aobvious
Show the subtitle file of current language；
Second acquisition module, if not being the subtitle file of current language for be switched subtitle file, obtains to be cut
Change subtitle file.
The changing method and device of the captions that example of the present invention is proposed, obtain the institute that video bag contains first before video playback
There is subtitle file and parse the subtitle file, so that the caption information bar of subtitle file is obtained, then according to the captions
The path of file and the side-play amount of caption information bar set up caption information data list；Switch captions when user's triggering is detected
During instruction, the switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；Then caption information bar is extracted
Meet pre-conditioned caption information bar in data list；Searched and to be switched subtitle file in the caption strips information extracted
Path identical caption information bar, and obtain the address offset amount of the caption information bar, read the address offset amount
Caption data；The caption data that will be read again carries out output display, so that when captions are switched, the captions after switching can
To be quickly displayed on corresponding timestamp.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the changing method first embodiment of captions of the present invention；
Fig. 2 is to extract thin the step of meet pre-conditioned caption information bar in caption information data list in Fig. 1
Change schematic flow sheet；
Fig. 3 is the refinement schematic flow sheet the step of caption data that will be read in Fig. 1 carries out output display；
Fig. 4 is to obtain the subtitle file that contains of video bag in Fig. 1 and parse, and caption information bar is obtained, according to captions text
The refinement schematic flow sheet of the step of path of part and the side-play amount of caption information bar set up caption information data list；
Fig. 5 is the schematic flow sheet of the changing method second embodiment of captions of the present invention；
Fig. 6 is the high-level schematic functional block diagram of the switching device first embodiment of captions of the present invention；
Fig. 7 is the refinement high-level schematic functional block diagram of extraction module in Fig. 6；
Fig. 8 is the refinement high-level schematic functional block diagram of the first display module in Fig. 6；
Fig. 9 is to set up the refinement high-level schematic functional block diagram of module in Fig. 6；
Figure 10 is the high-level schematic functional block diagram of the switching device second embodiment of captions of the present invention；
Figure 11 is the preservation form schematic diagram of the caption information bar after parsing；
Figure 12 is the preservation form schematic diagram of the caption information bar after being ranked up.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of changing method of captions.
Reference picture 1, Fig. 1 is the schematic flow sheet of the changing method first embodiment of captions of the present invention.
In the present embodiment, the method includes：
Step S10, obtains the subtitle file that contains of video bag and parses, and caption information bar is obtained, according to the subtitle file
Path and the side-play amount of caption information bar set up caption information data list；
In the present embodiment, it is necessary to obtain whole words that the video bag contains in advance before user plays out video
Curtain file, and the subtitle file is preserved in the buffer.Then the subtitle file is parsed, obtains multiple caption informations
Bar, the side-play amount in path and caption information bar further according to the subtitle file sets up caption information data list.
Step S20, the switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file.
Specifically, when family is used in viewing audio/video file, the captions for finding acquiescence display are not the captions that oneself needs, then
Captions switching can be carried out by equipment such as remote controls.Specifically, captions handoff functionality is selected, and in the option list of ejection
The captions type of selection demand, generates captions switching command, when terminal detects the captions switching command, receives the captions and cuts
Change instruction.Then according to the path of the to be switched subtitle file of captions switching command.
Step S30, pre-conditioned caption information bar is met in extraction caption information data list.
Specifically, the current play time stamp of currently playing video is obtained first, then stabs the current play time
With at the beginning of the caption information bar in caption information data list between and the end time contrasted successively, obtain contrast knot
Really, the time started in comparing result is less than or equal to timestamp and the end time is more than or equal to the caption information bar of timestamp
Extract.
Step S40, searches in the caption strips information extracted and the path identical captions of to be switched subtitle file are believed
Breath bar, and the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount.
Timestamp is less than or equal in the time started extracted and the end time is more than or equal to the word of timestamp
After curtain information bar, the caption information bar with to be switched subtitle file path same paths is searched in the caption information bar,
And the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount.
Step S50, the caption data that will be read carries out output display.
The caption data that will be read carries out output display so that during the broadcasting of captions after switching and currently playing video
Between match.
The changing method of the captions that the present embodiment is proposed, obtains all captions that video bag contains first before video playback
File simultaneously parses the subtitle file, so that the caption information bar of subtitle file is obtained, then according to the subtitle file
The side-play amount of path and caption information bar sets up caption information data list；Switch subtitle instructions when user's triggering is detected
When, the switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；Then caption information data is extracted
Meet pre-conditioned caption information bar in list；The road with to be switched subtitle file is searched in the caption strips information extracted
Footpath identical caption information bar, and the address offset amount of the caption information bar is obtained, read the captions of the address offset amount
Data；The caption data that will be read again carries out output display, so that when captions are switched, the captions after switching can be fast
Speed is displayed on corresponding timestamp.
Further, reference picture 2, Fig. 2 be Fig. 1 in extract caption information data list in meet pre-conditioned captions
The refinement schematic flow sheet of the step of bar information.
Based on changing method first embodiment of the present invention based on captions of the present invention, the step S30 can include：
Step S31, obtains the video data current display time stamp in playing；
Step S32, by between at the beginning of the caption information bar in the timestamp and caption information data list with knot
The beam time is contrasted respectively；
Step S33, if there is the time started in the caption information of caption information data list less than or equal to timestamp
And the end time is more than or equal to the caption information bar of timestamp, then the caption information bar is extracted；
Step S34, if being less than or equal to the time in the absence of the time started in the caption information of caption information data list
Stab and the end time is more than or equal to the caption information bar of timestamp, then extract and the timestamp is separated by nearest caption information
Bar.
In the present embodiment, the video data current display time stamp in playing is obtained first；Then by the timestamp
With at the beginning of the caption information bar in caption information data list between contrasted respectively with the end time；If caption information
There is the time started in the caption information of data list is more than or equal to timestamp less than or equal to timestamp and end time
Caption information bar, then extract the caption information bar；If in the absence of beginning in the caption information of caption information data list
Time is less than or equal to timestamp and the end time is more than or equal to the caption information bar of timestamp, then extract and the timestamp
It is separated by nearest caption information bar.
Further, reference picture 3, Fig. 3 is the refinement the step of caption data that will be read in Fig. 1 carries out output display
Schematic flow sheet.
Changing method first embodiment based on captions of the present invention, the step S50 can include：
Step S51, obtain described in carry out the to be switched subtitle file of output display, the to be switched subtitle file is carried out
Parsing；
Step S52, obtains the caption information data of the to be switched subtitle file, obtain current play time stamp and
By the current play time stamp and the to be switched subtitle file caption information bar at the beginning of between and the end time successively
It is compared；
Step S53, the time started in the caption information bar of the to be switched subtitle file is current less than or equal to described
Reproduction time is stabbed and current play time stamp carries out rendering display captions less than or equal to the caption information bar of end time
Text message；
Step S54, when the end time in the caption information bar of the to be switched subtitle file is more than into described currently playing
Between the caption information bar that stabs remove, and search next caption data；
Step S55, when the time started in the caption information bar of the to be switched subtitle file is less than into described currently playing
Between stab caption information bar caching.
In the present embodiment, after the to be switched subtitle file after navigating to side-play amount carries out output display, obtain
The to be switched subtitle file for carrying out output display, the to be switched subtitle file is parsed；Obtain described to be switched
The caption information data of subtitle file, obtains current play time stamp and the current play time is stabbed into be cut with described
It is compared successively with the end time between changing at the beginning of the caption information bar of subtitle file；Then by the to be switched captions text
The time started stabs less than or equal to the current play time and current play time stamp is less than in the caption information bar of part
Or carry out rendering display captioned test information equal to the caption information bar of end time；By the captions of the to be switched subtitle file
The end time removes more than the caption information bar of current play time stamp in information bar, and searches next caption data；
Caption information bar by the time started in the caption information bar of the to be switched subtitle file less than current play time stamp
Caching.
Further, reference picture 4, Fig. 4 is to obtain the subtitle file that contains of video bag in Fig. 1 and parse, and obtains caption information
Bar is thin the step of the side-play amount in path and caption information bar according to the subtitle file sets up caption information data list
Change schematic flow sheet.
Based on changing method first embodiment of the present invention based on captions of the present invention, the step S10 can include：
Step S11, obtains the subtitle file that video bag contains, and the subtitle file is preserved into caching, the captions
File includes the path of subtitle file content and subtitle file；
Step S12, parses the subtitle file, splits into captions with the end time according between at the beginning of every captions
Multiple caption information bars, obtain side-play amount, time started, end time, content of text and the renderer property of caption information bar；
Step S13, the side-play amount in path and caption information bar according to subtitle file sets up caption information data list,
And by between at the beginning of caption information bar, end time, content of text and renderer property preserved to caption information data list
In；
Step S13, travels through the time attribute of all caption information bars for parsing, at the beginning of extracting caption information bar
Between and the end time, according to ascending sort is carried out between at the beginning of the caption information bar, with the time attribute of caption information bar
Name the caption information bar and preserve into caption information data list.
In the present embodiment, the subtitle file that contains of video bag was obtained before player shows the first frame, and by the word
Curtain file is preserved into caching, and the subtitle file includes the path of subtitle file content and subtitle file.Then successively to institute
The plug-in subtitle file having is parsed, according between at the beginning of every captions and captions are split into multiple captions by the end time
Information bar, is derived from side-play amount, time started, end time, content of text and the renderer property of caption information bar, Ran Hougen
Caption information data list, and opening caption information bar are set up according to the path of subtitle file and the side-play amount of caption information bar
Time beginning, end time, content of text and renderer property are preserved into caption information data list, and it can be word to preserve form
Curtain file URL (path), the time started, the end time, content of text, renderer property, side-play amount, as shown in figure 11.Traversal institute
There is a time attribute of the caption information bar for parsing, between obtaining at the beginning of every caption information bar and the end time, extract
Between at the beginning of the caption information bar and the end time, according to carrying out ascending sort between at the beginning of the caption information bar,
Name the caption information bar and preserve with the time attribute of caption information bar and preserve form into caption information data list
Can be subtitle file URL (path), content of text, renderer property, side-play amount, as shown in figure 12.
Further, reference picture 5, Fig. 5 is the schematic flow sheet of the changing method second embodiment of captions of the present invention.
Changing method first embodiment based on captions of the present invention, methods described also includes：
Step S60, judge to be switched subtitle file whether be current language subtitle file；
Step S70, if so, then continuing to output the subtitle file of display current language；
Step S80, if it is not, then obtaining to be switched subtitle file.
In the present embodiment, user is during video is watched, it may occur that mistake presses the operation of the equipment such as remote control.When with
The operation of the equipment such as remote control is pressed for switching captions in family by mistake when, it is current language that user can select switching language, to continue
Watch the video of current output language.Therefore caption information data list is obtained in the switching subtitle instructions triggered according to user
And before to be switched subtitle file, it is necessary first to judge to be switched subtitle file whether be current language subtitle file, such as
The selected to be switched captions of fruit user can determine whether that user triggers maloperation as the captions of current language, then, without cutting
Language is changed, then continues to output the captions of display current language；If the selected to be switched captions of user and current language
Captions are different, then obtain to be switched subtitle file.
The present invention further provides a kind of switching device of captions.
Reference picture 6, Fig. 6 is the high-level schematic functional block diagram of the switching device first embodiment of captions of the present invention.
In the present embodiment, the device includes：
Module 10 is set up, for obtaining subtitle file that video bag contains and parsing, caption information bar is obtained, according to the word
The curtain path of file and the side-play amount of caption information bar set up caption information data list.
In the present embodiment, it is necessary to obtain whole words that the video bag contains in advance before user plays out video
Curtain file, and the subtitle file is preserved in the buffer.Then the subtitle file is parsed, obtains multiple caption informations
Bar, the side-play amount in path and caption information bar further according to the subtitle file sets up caption information data list.
First acquisition module 20, the switching subtitle instructions for being triggered according to user obtain the road of to be switched subtitle file
Footpath.
Specifically, when family is used in viewing audio/video file, the captions for finding acquiescence display are not the captions that oneself needs, then
Captions switching can be carried out by equipment such as remote controls.Specifically, captions handoff functionality is selected, and in the option list of ejection
The captions type of selection demand, generates captions switching command, when terminal detects the captions switching command, receives the captions and cuts
Change instruction.Then according to the path of the to be switched subtitle file of captions switching command.
Extraction module 30, meet pre-conditioned caption information bar in caption information data list for extracting.
Specifically, the current play time stamp of currently playing video is obtained first, then stabs the current play time
With at the beginning of the caption information bar in caption information data list between and the end time contrasted successively, obtain contrast knot
Really, the time started in comparing result is less than or equal to timestamp and the end time is more than or equal to the caption information bar of timestamp
Extract.
Read module 40, for searching the path identical with to be switched subtitle file in the caption strips information extracted
Caption information bar, and the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount.
Timestamp is less than or equal in the time started extracted and the end time is more than or equal to the word of timestamp
After curtain information bar, the caption information bar with to be switched subtitle file path same paths is searched in the caption information bar,
And the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount.
First display module 50, the caption data for that will read carries out output display.
The caption data that will be read carries out output display so that during the broadcasting of captions after switching and currently playing video
Between match.
The switching device of the captions that the present embodiment is proposed, obtains all captions that video bag contains first before video playback
File simultaneously parses the subtitle file, so that the caption information bar of subtitle file is obtained, then according to the subtitle file
The side-play amount of path and caption information bar sets up caption information data list；Switch subtitle instructions when user's triggering is detected
When, the switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；Then caption information data is extracted
Meet pre-conditioned caption information bar in list；The road with to be switched subtitle file is searched in the caption strips information extracted
Footpath identical caption information bar, and the address offset amount of the caption information bar is obtained, read the captions of the address offset amount
Data；The caption data that will be read again carries out output display, so that when captions are switched, the captions after switching can be fast
Speed is displayed on corresponding timestamp.
Further, reference picture 7, Fig. 7 is the refinement high-level schematic functional block diagram of extraction module in Fig. 6.
Based on switching device first embodiment of the present invention based on captions of the present invention, the extraction module 30 can include：
Acquisition module 31, for obtaining the video data current display time stamp in playing；
Comparison unit 32, for by the beginning of the caption information bar in the timestamp and caption information data list
Between contrasted respectively with the end time；；
First extraction unit 33, if for exist in the caption information of caption information data list the time started be less than or
Caption information bar equal to timestamp and end time more than or equal to timestamp, then extract the caption information bar；
Second extraction unit 34, if for being less than in the absence of the time started in the caption information of caption information data list
Or the caption information bar equal to timestamp and end time more than or equal to timestamp, then extract and the timestamp is separated by recently
Caption information bar.
In the present embodiment, the video data current display time stamp in playing is obtained first；Then by the timestamp
With at the beginning of the caption information bar in caption information data list between contrasted respectively with the end time；If caption information
There is the time started in the caption information of data list is more than or equal to timestamp less than or equal to timestamp and end time
Caption information bar, then extract the caption information bar；If in the absence of beginning in the caption information of caption information data list
Time is less than or equal to timestamp and the end time is more than or equal to the caption information bar of timestamp, then extract and the timestamp
It is separated by nearest caption information bar.
Further, reference picture 8, Fig. 8 is the refinement high-level schematic functional block diagram of the first display module 50 in Fig. 6.
Based on switching device first embodiment of the present invention based on captions of the present invention, first display module 50 can be wrapped
Include：
First resolution unit 51, for obtaining the to be switched subtitle file for carrying out output display, will be described to be switched
Subtitle file is parsed；
Comparing unit 52, the caption information data for obtaining the to be switched subtitle file, when obtaining currently playing
Between stamp and by the current play time stamp and the to be switched subtitle file caption information bar at the beginning of between and terminate
Time is compared successively；
Rendering unit 53, for the time started in the caption information bar of the to be switched subtitle file to be less than or equal into institute
State current play time stamp and current play time stamp less than or equal to the caption information bar of end time render it is aobvious
Show captioned test information；
Searching unit 54, it is described current for the end time in the caption information bar of the to be switched subtitle file to be more than
The caption information bar of reproduction time stamp is removed, and searches next caption data；
Buffer unit 55, it is described current for the time started in the caption information bar of the to be switched subtitle file to be less than
The caption information bar caching of reproduction time stamp.
In the present embodiment, after the to be switched subtitle file after navigating to side-play amount carries out output display, obtain
The to be switched subtitle file for carrying out output display, the to be switched subtitle file is parsed；Obtain described to be switched
The caption information data of subtitle file, obtains current play time stamp and the current play time is stabbed into be cut with described
It is compared successively with the end time between changing at the beginning of the caption information bar of subtitle file；Then by the to be switched captions text
The time started stabs less than or equal to the current play time and current play time stamp is less than in the caption information bar of part
Or carry out rendering display captioned test information equal to the caption information bar of end time；By the captions of the to be switched subtitle file
The end time removes more than the caption information bar of current play time stamp in information bar, and searches next caption data；
Caption information bar by the time started in the caption information bar of the to be switched subtitle file less than current play time stamp
Caching.
Further, reference picture 9, Fig. 9 is to set up the refinement high-level schematic functional block diagram of module in Fig. 6.
Based on switching device first embodiment of the present invention based on captions of the present invention, the module 10 of setting up can include：
Acquiring unit 11, for obtaining the subtitle file that video bag contains, and the subtitle file is preserved into caching, institute
State path of the subtitle file including subtitle file content and subtitle file；
Second resolution unit 12, for parsing the subtitle file, according between at the beginning of every captions and the end time
Captions are split into multiple caption information bars, side-play amount, time started, end time, the content of text of caption information bar is obtained
And renderer property；
Unit 13 is set up, the side-play amount for the path according to subtitle file and caption information bar sets up caption information bar number
According to list, and by between at the beginning of caption information bar, end time, content of text and renderer property preserved to caption information bar number
According in list；
Storage unit 14, the time attribute for traveling through all caption information bars for parsing extracts caption information bar
At the beginning of between and the end time, according to ascending sort is carried out between at the beginning of the caption information bar, with caption information bar
Time attribute is named the caption information bar and is preserved into caption information data list.
In the present embodiment, the subtitle file that contains of video bag was obtained before player shows the first frame, and by the word
Curtain file is preserved into caching, and the subtitle file includes the path of subtitle file content and subtitle file.Then successively to institute
The plug-in subtitle file having is parsed, according between at the beginning of every captions and captions are split into multiple captions by the end time
Information bar, is derived from side-play amount, time started, end time, content of text and the renderer property of caption information bar, Ran Hougen
Caption information data list, and opening caption information bar are set up according to the path of subtitle file and the side-play amount of caption information bar
Time beginning, end time, content of text and renderer property are preserved into caption information data list, and it can be word to preserve form
Curtain file URL (path), the time started, the end time, content of text, renderer property, side-play amount, as shown in figure 11.Traversal institute
There is a time attribute of the caption information bar for parsing, between obtaining at the beginning of every caption information bar and the end time, extract
Between at the beginning of the caption information bar and the end time, according to carrying out ascending sort between at the beginning of the caption information bar,
Name the caption information bar and preserve with the time attribute of caption information bar and preserve form into caption information data list
Can be subtitle file URL (path), content of text, renderer property, side-play amount, as shown in figure 12.
Further, reference picture 10, Figure 10 is that the functional module of the switching device second embodiment of captions of the present invention is illustrated
Figure.
Switching device first embodiment based on captions of the present invention, described device also includes：
Judge module 60, for judge to be switched subtitle file whether be current language subtitle file；
Second display module 70, if being the subtitle file of current language for be switched subtitle file, continues to output
Show the subtitle file of current language；
Second acquisition module 80, if not being the subtitle file of current language for be switched subtitle file, acquisition is treated
Switching subtitle file.
In the present embodiment, user is during video is watched, it may occur that mistake presses the operation of the equipment such as remote control.When with
The operation of the equipment such as remote control is pressed for switching captions in family by mistake when, it is current language that user can select switching language, to continue
Watch the video of current output language.Therefore caption information data list is obtained in the switching subtitle instructions triggered according to user
And before to be switched subtitle file, it is necessary first to judge to be switched subtitle file whether be current language subtitle file, such as
The selected to be switched captions of fruit user can determine whether that user triggers maloperation as the captions of current language, then, without cutting
Language is changed, then continues to output the captions of display current language；If the selected to be switched captions of user and current language
Captions are different, then obtain to be switched subtitle file.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of changing method of captions, it is characterised in that the described method comprises the following steps：
Obtain the subtitle file that contains of video bag and parse, obtain caption information bar, path and captions according to the subtitle file
The side-play amount of information bar sets up caption information data list；
The switching subtitle instructions triggered according to user obtain the path of to be switched subtitle file；
Meet pre-conditioned caption information bar in extraction caption information data list；
The path identical caption information bar with to be switched subtitle file is searched in the caption strips information extracted, and obtains institute
The address offset amount of caption information bar is stated, the caption data of the address offset amount is read；
The caption data that will be read carries out output display.
2. the changing method of captions as claimed in claim 1, it is characterised in that in the extraction caption information data list
The step of meeting pre-conditioned caption information bar includes：
Obtain the video data current display time stamp in playing；
To respectively enter with the end time between at the beginning of caption information bar in the timestamp and caption information data list
Row contrast；
If there is the time started less than or equal to timestamp and end time in the caption information bar in caption information data list
More than or equal to the caption information bar of timestamp, then the caption information bar is extracted；
If being less than or equal to timestamp and end time in the absence of the time started in the caption information of caption information data list
More than or equal to the caption information bar of timestamp, then extract and the timestamp is separated by nearest caption information bar.
3. the changing method of captions as claimed in claim 1, it is characterised in that the caption data that the side will read is carried out
The step of output display, includes：
The to be switched subtitle file of output display is carried out described in obtaining, the to be switched subtitle file is parsed；
The caption information data of the to be switched subtitle file is obtained, current play time stamp is obtained and is currently broadcast described
It is compared successively with the end time between putting at the beginning of the caption information bar of timestamp and the to be switched subtitle file；
By the time started in the caption information bar of the to be switched subtitle file less than or equal to the current play time stab and
The current play time stamp carries out rendering display captioned test information less than or equal to the caption information bar of end time；
Captions letter by the end time in the caption information bar of the to be switched subtitle file more than current play time stamp
Breath bar is removed, and searches next caption data；
Captions letter by the time started in the caption information bar of the to be switched subtitle file less than current play time stamp
Breath bar caching.
4. the changing method of captions as claimed in claim 1, it is characterised in that the subtitle file that the acquisition video bag contains is simultaneously
Parsing, obtains caption information bar, and the side-play amount in path and caption information bar according to the subtitle file sets up caption information bar
The step of data list, includes：
The subtitle file that video bag contains is obtained, and the subtitle file is preserved into caching, the subtitle file includes captions
The path of file content and subtitle file；
The subtitle file is parsed, according between at the beginning of every captions and captions are split into multiple caption informations by the end time
Bar, obtains side-play amount, time started, end time, content of text and the renderer property of caption information bar；
The side-play amount in path and caption information bar according to subtitle file sets up caption information data list, and by caption information
Between at the beginning of bar, end time, content of text and renderer property preserved into caption information data list；
The time attribute of all caption information bars for parsing of traversal, between extracting at the beginning of caption information bar and at the end of
Between, according to ascending sort is carried out between at the beginning of the caption information bar, the word is named with the time attribute of caption information bar
Curtain information bar is simultaneously preserved into caption information data list.
5. the changing method of the captions as described in claim any one of 1-4, it is characterised in that methods described also includes：
Judge to be switched subtitle file whether be current language subtitle file；
If so, then continuing to output the subtitle file of display current language；
If it is not, then obtaining to be switched subtitle file.
6. a kind of switching device of captions, it is characterised in that described device includes：
Module is set up, for obtaining subtitle file that video bag contains and parsing, caption information bar is obtained, according to the subtitle file
Path and the side-play amount of caption information bar set up caption information data list
First acquisition module, the switching subtitle instructions for being triggered according to user obtain the path of to be switched subtitle file；
Extraction module, meet pre-conditioned caption information bar in caption information data list for extracting；
Read module, for searching the path identical captions letter with to be switched subtitle file in the caption strips information extracted
Breath bar, and the address offset amount of the caption information bar is obtained, read the caption data of the address offset amount；
First display module, the caption data for that will read carries out output display.
7. the switching device of captions as claimed in claim 6, it is characterised in that the extraction module includes：
Acquiring unit, for obtaining the video data current display time stamp in playing；
Comparison unit, for by between at the beginning of the timestamp and the caption information of caption information data list at the end of
Between contrasted respectively；
First extraction unit, if be less than or equal to for there is the time started in the caption information of caption information data list
Between stamp and the end time more than or equal to timestamp caption information bar, then extract the caption information bar；
Second extraction unit, if for being less than or equal in the absence of the time started in the caption information of caption information data list
Timestamp and end time more than or equal to the caption information bar of timestamp, then extract and the timestamp are separated by nearest captions
Information bar.
8. the switching device of captions as claimed in claim 6, it is characterised in that first display module includes：
First resolution unit, for obtaining the to be switched subtitle file for carrying out output display, by the to be switched captions text
Part is parsed；
Comparing unit, the caption information data for obtaining the to be switched subtitle file obtains current play time stamp simultaneously
And by the current play time stamp and the to be switched subtitle file caption information bar at the beginning of between and the end time according to
It is secondary to be compared；
Rendering unit, it is described current for the time started in the caption information bar of the to be switched subtitle file to be less than or equal to
Reproduction time is stabbed and current play time stamp carries out rendering display captions less than or equal to the caption information bar of end time
Text message；
Searching unit, during for the end time in the caption information bar of the to be switched subtitle file to be more than into described currently playing
Between the caption information bar that stabs remove, and search next caption data；
Buffer unit, during for the time started in the caption information bar of the to be switched subtitle file to be less than into described currently playing
Between stab caption information bar caching.
9. the switching device of captions as claimed in claim 6, it is characterised in that the module of setting up includes：
Acquiring unit, for obtaining the subtitle file that video bag contains, and the subtitle file is preserved into caching, the captions
File includes the path of subtitle file content and subtitle file；
Second resolution unit, for parsing the subtitle file, according between at the beginning of every captions and the end time is by captions
Split into multiple caption information bars, obtain the side-play amount of caption information bar, time started, end time, content of text and render
Attribute；
Unit is set up, the side-play amount for the path according to subtitle file and caption information bar sets up caption information data row
Table, and by between at the beginning of caption information bar, end time, content of text and renderer property preserved to caption information data row
In table；
Storage unit, the time attribute for traveling through all caption information bars for parsing extracts the beginning of caption information bar
Time and end time, according to ascending sort is carried out between at the beginning of the caption information bar, belonged to the time of caption information bar
The life name caption information bar is simultaneously preserved into caption information data list.
10. the switching device of the captions as described in claim any one of 6-9, it is characterised in that described device also includes：
Judge module, for judge to be switched subtitle file whether be current language subtitle file；
Second display module, if being the subtitle file of current language for be switched subtitle file, continues to output display and works as
The subtitle file of preceding language；
Second acquisition module, if not being the subtitle file of current language for be switched subtitle file, obtains to be switched word
Curtain file.
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