Convert SUP Subtitles to TXT_QUICKTIME Format
or drag and drop
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 TXT_QUICKTIME
QuickTime Text, often called QTText, is Apple's native format for creating text tracks in QuickTime videos. It's a simple text file that can include timestamps and some basic styling descriptors using text-based tags. It was commonly used for adding subtitles, chapter markers, and other timed text to videos within the Apple ecosystem.
SUP vs TXT_QUICKTIME
| Feature | SUP | TXT_QUICKTIME |
|---|---|---|
| Styling Support | true | false |
| Positioning Support | true | false |
| Animation Support | false | false |
| Learning Curve | expert | beginner |
| Quality Rating | 5 | 2 |
| Patent Status | industry standard | proprietary |
| 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.
Does QuickTime Text work outside of Apple products?
Support for QTText is very limited outside of the Apple ecosystem. Players like VLC may have some support for it, but in general, it is not a portable format. For cross-platform compatibility, it's much better to use a universal format like SRT.
Can I style QuickTime Text subtitles?
Yes, QTText supports some basic text styling. You can add descriptors in the file header to define a font, size, and color, and use tags within the subtitle text to apply styles like bold or italic. However, the styling is much more limited than formats like VTT or ASS.
Transform Your Videos with AI Subtitles & Closed Captions
Get started with 10 minutes of free transcription. No credit card required.