Convert STL Subtitles to DFXP Format
or drag and drop
About STL
The EBU STL (European Broadcasting Union Sp-ruce Teletext Ltd) format is a professional subtitle format used extensively in television broadcasting and for DVD authoring. It's a binary format that contains not only the text and timing but also a large amount of metadata related to the production, such as program title, episode number, and translation details. It's a robust format designed for professional broadcast workflows.
About DFXP
DFXP (Distribution Format Exchange Profile) is a profile of the more general TTML standard. It was created to standardize subtitle delivery for streaming services and is famously used by platforms like Netflix. It is an XML-based format that contains rich information about timing, styling, and positioning, ensuring high-quality, professional, and accessible captions for digital distribution.
STL vs DFXP
| Feature | STL | DFXP |
|---|---|---|
| Styling Support | true | true |
| Positioning Support | true | true |
| Animation Support | false | true |
| Learning Curve | expert | expert |
| Quality Rating | 5 | 5 |
| Patent Status | industry standard | industry standard |
| Year Introduced | 1991 | 2008 |
Frequently Asked Questions
Is this STL related to 3D printing?
No, this is a common point of confusion. The EBU STL format for subtitles is completely unrelated to the STL (STereoLithography) file format used for 3D models and printing. They just happen to share the same file extension.
Can I open an STL subtitle file in a text editor?
No, most STL files are binary and will not be readable in a standard text editor. They require specialized professional subtitling software to be opened, edited, and converted.
Is DFXP the same as TTML?
DFXP is a specific implementation, or 'profile', of TTML. Think of TTML as a large toolbox with many options, and DFXP as a specific set of those tools chosen for a particular job (web streaming). While a DFXP file is a TTML file, not all TTML files are valid DFXP files.
Do I need to worry about DFXP as a casual user?
No, DFXP is a professional delivery format. As a user, you will almost never encounter DFXP files directly. They are processed and delivered by the back-end systems of streaming platforms. If you are creating subtitles, you will typically work with SRT or VTT.
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