What happens to XML special characters?

TTML escapes special characters as XML entities (& for &, < for ). The converter unescapes these back to their readable character equivalents in the SRT output.

Is the TTML to SRT converter free?

Yes, completely free with no sign-up, no watermarks, and no file size limits. All processing happens in your browser.

Can I convert TTML to SRT on mobile?

Yes. The converter runs in any modern mobile browser on iOS and Android. Upload your TTML file and download the SRT directly.

What file extensions does the converter accept?

The converter accepts .ttml, .xml, and .itt files. TTML content can use any of these extensions. The output is always a .srt file regardless of the input extension.

Does the converter handle TTML regions and positioning?

TTML region and positioning information (tts:origin, tts:extent) is stripped during conversion since SRT does not support positioning. The subtitle text and timing are preserved, but positioning data is lost.

What happens to TTML metadata like language and forced narratives?

TTML metadata (xml:lang, forced narrative flags, role attributes) is not transferable to SRT, which has no metadata support. The conversion focuses on text and timing, which are fully preserved.

Are multi-language TTML files supported?

TTML can contain multiple language tracks using different sections or span elements. The converter extracts all text content. If your TTML has multiple languages, you may want to separate them before conversion.

Can I edit the SRT file after conversion?

Yes. SRT files are plain text and can be edited in any text editor (Notepad, VS Code, Sublime Text) or subtitle editor (Subtitle Edit, Aegisub, Jubler). This is one advantage of SRT over TTML - it requires no XML knowledge to edit.

Absolutely. All conversion happens client-side in your browser. No subtitle data, file contents, or metadata is ever transmitted to a server.

How accurate are the timestamps after conversion?

Timestamps are converted with full precision. TTML's millisecond-based time expressions map directly to SRT's millisecond timestamps, so no timing information is lost during the conversion process.

What if my TTML file has complex nested elements?

The converter handles nested elements within tags, extracting the text content recursively. Complex styling spans are simplified to plain text while preserving the actual subtitle dialogue.

Can I batch convert multiple TTML files to SRT?

This page converts one file at a time. For batch processing, use the Workspace feature to load multiple TTML files and convert them sequentially through the pipeline.

How large is the SRT output compared to the TTML input?

The SRT output is typically 50-70% smaller than the TTML input because XML overhead, namespace declarations, and styling attributes are stripped. Only the essential text and timing data remain.

TTML to SRT Converter

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TTML

<?xml version="1.0" encoding="UTF-8"?>
<tt xml:lang="en" xmlns="http://www.w3.org/ns/ttml">
  <body>
    <div>
      <p begin="1.000s" end="4.000s">Hello, world!</p>
      <p begin="4.500s" end="8.000s">This is a subtitle file.</p>
      <p begin="8.500s" end="12.000s">Converted locally!</p>
    </div>
  </body>
</tt>

SRT

1
00:00:01,000 --> 00:00:04,000
Hello, world!
 
2
00:00:04,500 --> 00:00:08,000
This is a subtitle file.
 
3
00:00:08,500 --> 00:00:12,000
Converted locally!

Drag & drop your TTML file here

or click to browse

Supports .ttml files up to any size

100% LocalNo UploadSecureInstant

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How It Works

Upload TTML File

Drag & drop or select your .ttml file

Convert Instantly

We process it locally in your browser

Download SRT

Get your .srt file immediately

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Works on Windows, Mac, Linux, iOS, Android - any modern browser.

About TTML to SRT

This converter transforms TTML (Timed Text Markup Language) subtitle files into SubRip (SRT) format. TTML is an XML-based format used by Netflix, Apple TV, Amazon, and broadcast systems, but most consumer video players, smart TVs, and media servers cannot read TTML directly. Converting to SRT makes these professional subtitle files universally playable on VLC, MX Player, Kodi, Plex, smart TVs, and any device that supports subtitles.

Input Format

TTML

TTML (Timed Text Markup Language) is a W3C XML-based subtitle format used by Netflix (IMSC/ITT), Apple TV (ITV), Amazon Prime Video, and broadcast organizations (EBU-TT-D). TTML files contain structured XML with namespace declarations, styling attributes, elements for cues, and begin/end time expressions. They may use .ttml, .xml, or .itt extensions.

Output Format

SRT

SRT (SubRip) is a plain-text subtitle format with sequentially numbered entries, HH:MM:SS,mmm timestamps, and simple text lines. SRT is the universal subtitle format supported by virtually every video player, smart TV, media server, streaming platform, and subtitle editing tool.

Features

Parses TTML XML and extracts text from elements regardless of namespace complexity

Converts TTML begin/end time expressions to SRT HH:MM:SS,mmm timestamps

Strips XML styling attributes, namespace declarations, and metadata cleanly

Converts tags back to plain-text newlines for SRT line breaks

Unescapes XML entities (&, <, >) back to readable characters

Handles TTML profiles including IMSC, ITV, and EBU-TT-D variants

Preserves timing accuracy through the XML-to-plaintext conversion

100% client-side, no uploads, complete privacy

Why Convert?

Most consumer video players (VLC, MX Player, Kodi, MPC-HC) do not support TTML and will not display subtitles from TTML files.

Smart TVs (Samsung, LG, Sony, Panasonic) and media servers (Plex, Emby, Jellyfin) primarily support SRT, not TTML.

Mobile video players on iOS and Android universally support SRT but rarely support TTML.

SRT files are much smaller (1-3 KB/min) compared to TTML (3-6 KB/min), making them ideal for storage and sharing.

SRT is easier to edit in any text editor without XML knowledge, while TTML requires understanding of XML structure and namespaces.

Home theater and media center setups (Kodi, Plex, Jellyfin) default to SRT and may not auto-detect TTML files.

Converting TTML to SRT removes styling but preserves all timing and text content, making the subtitles universally accessible.

Format Differences

TTML is an XML document with <tt> root, namespaces, and elements. SRT is a flat plain-text file with numbered entries and no structure.

TTML time expressions use begin/end attributes with dot separators (begin="00:01:30.500"). SRT uses HH:MM:SS,mmm with comma separators (00:01:30,500).

TTML supports inline styling (tts:fontFamily, tts:color, tts:origin). SRT has zero styling support - all visual formatting is lost during conversion.

TTML uses tags for line breaks. SRT uses literal newline characters between lines within a cue.

TTML includes XML metadata (language, region, role, forced narrative flags). SRT has no metadata capabilities whatsoever.

TTML files are 3-6 KB per minute of video. SRT files are 1-3 KB per minute, roughly half the size.

Common Use Cases

Personal Media Library

Convert TTML subtitles from Netflix downloads or streaming captures to SRT for use in Plex, Kodi, Jellyfin, or VLC personal media libraries.

Smart TV Compatibility

Smart TVs from Samsung, LG, Sony, and Panasonic primarily support SRT subtitles. Convert TTML files to SRT for playback on these devices.

Mobile Video Playback

Mobile video players on iOS and Android universally support SRT but rarely support TTML. Convert TTML subtitles for mobile viewing.

Simplified Editing

SRT can be edited in any text editor without XML knowledge. Convert TTML to SRT when you need to make quick text or timing edits without dealing with XML structure.

File Size Optimization

SRT files are roughly half the size of TTML files. Convert to SRT when storage or bandwidth is a concern, such as for mobile downloads or email attachments.

Related Formats

VTT

WebVTT - another modern format. Convert TTML to VTT instead of SRT when you need web playback with some styling support.

SRT

SubRip - the output format of this converter. The universal subtitle format supported everywhere.

ASS

Advanced SubStation Alpha - convert TTML to ASS if you need styling support that SRT cannot provide.

Frequently Asked Questions

Why would I convert TTML to SRT?

Most consumer video players, smart TVs, and media servers do not support TTML. Converting to SRT makes the subtitles universally playable on VLC, Kodi, Plex, MX Player, smart TVs, and mobile devices. You lose styling and metadata, but gain universal compatibility.

How are TTML timestamps converted?

TTML uses begin/end attributes with dot-separated time expressions (begin="00:01:30.500"). The converter parses these and converts them to SRT's HH:MM:SS,mmm format with comma separators (00:01:30,500). All timing precision is preserved.

What about Apple TV ITV files?

Apple TV ITV is also a TTML-derived format. The converter reads the XML structure and extracts subtitle cues the same way as standard TTML, producing valid SRT output.

Will I lose subtitle styling when converting TTML to SRT?

Yes. TTML styling attributes (font, color, positioning) cannot be represented in SRT, which has no styling support. The conversion preserves all text content and timing accurately but strips all visual formatting from the TTML source.

Does the converter handle Netflix IMSC files?

Yes. Netflix IMSC files are a profile of TTML. The converter parses the underlying TTML XML structure regardless of which profile is used, extracting text and timing from elements.

How are tags handled?

TTML uses self-closing tags for line breaks within cues. The converter replaces these with literal newline characters, which is how SRT represents line breaks in multi-line cues.

Ready to convert your subtitles?

Drop your TTML file here and convert to SRT instantly.

Related Resources

What is TTML?What is SRT?