Convert SUP Subtitles to LRC Format
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About SUP
The SUP format is a generic container for image-based subtitles, most commonly associated with DVD and Blu-ray discs. On DVDs, these are called VobSub (.sub/.idx), and on Blu-rays, they are PGS (.sup). In both cases, the subtitles are stored as a stream of images, not as text. This ensures consistent visual appearance across all players but makes them large and impossible to edit as text.
About LRC
LRC is a format designed to display synchronized lyrics for audio files, most commonly used by music players and karaoke software. The format is a simple text file with a timestamp at the beginning of each line of lyrics. As the audio plays, the player displays the line of text that corresponds to the current time, creating a simple but effective karaoke-style experience.
SUP vs LRC
| Feature | SUP | LRC |
|---|---|---|
| Styling Support | true | false |
| Positioning Support | true | false |
| Animation Support | false | false |
| Learning Curve | expert | beginner |
| Quality Rating | 5 | 3 |
| Patent Status | industry standard | open format |
| Year Introduced | 1997 | 1999 |
Frequently Asked Questions
What's the difference between PGS and SUP?
PGS is a specific type of SUP stream used for Blu-ray discs. 'SUP' is often used more generically to refer to any image-based subtitle stream, including those from DVDs (which are technically VobSubs). Our converter correctly identifies and handles these different image-based formats.
How do I convert a SUP file to SRT?
Converting an image-based format like SUP to a text-based format like SRT requires Optical Character Recognition (OCR). This process involves software scanning the images of the subtitles and attempting to recognize the characters to convert them back into text. The accuracy can vary depending on the quality and font of the subtitles.
Can I use LRC files for video subtitles?
LRC is not suitable for video subtitles. It only has a start timestamp for each line and no end time, meaning the text would remain on screen until the next line appears. It's specifically designed for the line-by-line nature of song lyrics and lacks the features needed for proper dialogue subtitling.
What is the difference between simple and enhanced LRC?
Simple LRC format provides a timestamp for each line. Enhanced LRC format adds the ability to have timestamps for each word within a line, allowing for a more precise word-by-word highlighting effect in karaoke applications.
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