SRT → DFXP
Convert SRT to DFXP
Free online SRT to DFXP subtitle converter. Transform SubRip Subtitle (.srt) files to DFXP (TTML) (.dfxp) format instantly in your browser. No upload required.
Format Comparison
| SRT | DFXP | |
|---|---|---|
| Full Name | SubRip Subtitle | DFXP (TTML) |
| Extension | .srt | .dfxp |
| Category | text | xml |
| Key Features | Sequential numbering, Millisecond timestamps, Basic HTML formatting, Universal player support | TTML-based, XML structure, Styling support, Layout regions |
| Common Uses | YouTube uploads, Media players (VLC, MPC), Video editing, Streaming platforms | Subtitle distribution, Platform interchange, Legacy TTML workflows |
| Limitations | No styling metadata, No positioning, No font specification | Superseded by IMSC, Verbose XML, Inconsistent implementations |
How to Convert SRT to DFXP
- 1
Open the subtitle converter
Go to the Subtitle Tool and select your source SRT file by pasting the text or uploading the .srt file.
- 2
Set your framerate
Choose the framerate that matches your video (e.g., 23.976, 25, 29.97). This ensures frame-accurate timestamp conversion.
- 3
Select DFXP as output format
Choose DFXP (TTML) (.dfxp) from the output format dropdown.
- 4
Download your converted file
Click the download button to save your converted DFXP file. You can also copy the output text directly.
Frequently Asked Questions
How do I convert SRT to DFXP?
Upload or paste your SubRip Subtitle (.srt) file into the converter, select DFXP as the output format, and click Convert. The tool processes everything in your browser — no file uploads to a server.
What is the difference between SRT and DFXP?
SRT is srt (subrip subtitle) is the most widely used subtitle format. DFXP is dfxp (distribution format exchange profile) is a profile of ttml (timed text markup language) for subtitle distribution. They differ in features like sequential numbering (SRT) versus ttml-based (DFXP).
Is the SRT to DFXP converter free?
Yes, completely free with no limits. The converter runs entirely in your browser using the timecodes library — no server processing, no sign-up, no watermarks.
Will I lose formatting when converting from SRT to DFXP?
DFXP has some limitations: superseded by imsc. Timing accuracy is preserved using frame-based conversion through the timecodes library, but format-specific features like sequential numbering and millisecond timestamps may not carry over.