Convert TTML to SRT Online Free
Convert TTML subtitle files used by Netflix, Amazon, and broadcast workflows into universal SRT format. ChangeThisFile parses the XML and extracts clean subtitle cues.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile converts TTML to SRT on a secure server. Upload your TTML XML subtitle file and it is parsed and converted to SRT with numbered cues and HH:MM:SS,mmm timestamps. Files are auto-deleted after conversion. Free with no signup required.
Convert TTML to SRT
Drop your TTML file here to convert it instantly
Drag & drop your .ttml file here, or click to browse
Convert to SRT instantly
TTML vs SRT: Format Comparison
Key differences between the two formats
| Feature | TTML | SRT |
|---|---|---|
| Structure | XML with nested elements | Plain text blocks |
| Styling | Rich XML styling attributes | Basic bold/italic only |
| Positioning | Named regions with coordinates | Not supported |
| File size | Larger (XML overhead) | Compact plain text |
| Editability | Requires XML knowledge | Edit in any text editor |
| Player support | Broadcast/streaming platforms | All video players |
| Standard | W3C TTML specification | De facto universal standard |
When to Convert
Common scenarios where this conversion is useful
Editing Netflix or Amazon subtitle exports
Netflix and Amazon Prime Video use TTML internally for subtitle delivery. Converting to SRT makes these subtitles editable in common subtitle editors like SubtitleEdit and Aegisub.
Playing broadcast subtitles in a desktop media player
VLC, MPC-HC, and MPV all read SRT natively but may struggle with TTML's XML structure. Converting to SRT ensures subtitle compatibility with any desktop player.
Re-releasing content on platforms that require SRT
After receiving TTML subtitle files from a production house, convert to SRT for distribution to platforms and players that expect the simpler format.
How to Convert TTML to SRT
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1
Upload your TTML file
Drag and drop your TTML subtitle file (.ttml or .xml) onto the converter, or click browse to select it. The upload is encrypted.
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2
Server-side conversion
The server parses the TTML XML, extracts each <p> element's begin and end attributes and text content, converts timestamps to SRT format, and adds sequential index numbers.
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3
Download the SRT
Save your converted SRT subtitle file. The server copy is automatically deleted after processing.
Frequently Asked Questions
TTML (Timed Text Markup Language) is a W3C standard XML-based subtitle format used by Netflix, Amazon, broadcast networks, and professional subtitle tools. It supports rich styling, multiple regions, and complex positioning.
SRT is more universally supported by consumer video players, video editors, and distribution platforms. TTML's XML complexity is unnecessary for most playback scenarios.
TTML styling attributes such as font, color, size, and position are stripped during conversion. SRT only supports basic text, so complex TTML styling cannot be preserved.
Region placement attributes are discarded. All cues are output as standard SRT entries without positioning. If subtitle placement matters, consider converting to VTT which supports cue positioning.
The converter supports HH:MM:SS.mmm format, HH:MM:SS:ff (frame-based timecodes), and the tick-based formats used by standard TTML files.
Netflix internally uses a TTML profile. If you have access to a TTML file from a Netflix content delivery, ChangeThisFile can parse it and output a clean SRT.
Yes. Files are transferred over HTTPS and automatically deleted after the converted SRT is ready for download.
TTML files can be larger than plain-text subtitle formats due to XML overhead. The 50 MB server limit accommodates virtually any subtitle file.
The converter extracts <p> elements and begin/end attributes which are consistent across TTML 1.0 and 2.0 profiles.
Yes. ChangeThisFile also supports SRT to TTML conversion for workflows that require round-tripping between formats.
Related Conversions
Need to convert programmatically?
Use the ChangeThisFile API to convert TTML to SRT in your app. No rate limits, up to 500MB files, simple REST endpoint.
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