Convert VTT Subtitles to JSON Format
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About VTT
WebVTT (Web Video Text Tracks) is the modern standard for displaying subtitles on the web, designed specifically for use with HTML5 video. It's similar to SRT but includes added features for styling (using CSS), positioning, and metadata. This allows for more dynamic, accessible, and richly formatted captions and subtitles directly in the browser.
About JSON
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. While not a traditional subtitle format itself, it is an excellent way to store and transmit structured subtitle data. Each subtitle cue can be an object with properties for start time, end time, text content, and any custom metadata.
VTT vs JSON
| Feature | VTT | JSON |
|---|---|---|
| Styling Support | true | true |
| Positioning Support | true | true |
| Animation Support | false | true |
| Learning Curve | intermediate | intermediate |
| Quality Rating | 5 | 4 |
| Patent Status | open standard | open standard |
| Year Introduced | 2012 | 2001 |
Frequently Asked Questions
How is VTT different from SRT?
The main differences are that VTT supports styling, positioning, and metadata, while SRT does not. VTT also has a slightly different timestamp format (using a period instead of a comma for milliseconds) and requires a 'WEBVTT' header. VTT is the standard for modern web video.
Can I use HTML tags in a VTT file?
You can use certain HTML-like tags within VTT cues for basic formatting, such as <b> for bold, <i> for italic, and <u> for underline. You can also define more complex styles in an external CSS file linked to the video player.
Can a media player play a JSON subtitle file?
No, standard media players like VLC or QuickTime cannot directly play a JSON file as a subtitle track. JSON is a data format that would need to be processed by a custom web application or script to display the subtitles over a video.
Why would I convert subtitles to JSON?
Converting subtitles to JSON is extremely useful for web developers and data processing. It allows you to easily load subtitle data into a web application, manipulate it with JavaScript, integrate it with other APIs, or store it in a database in a structured way.
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