TTML to DFXP Converter

Convert TTML to DFXP

Converting from TTML (TTML) to DFXP (DFXP) while maintaining timing accuracy and subtitle content.

About TTML to DFXP Conversion

A quick guide to converting from TTML (.ttml) to DFXP (.dfxp). Learn about format differences, what's preserved, and how to convert your subtitles.

Key Differences Between TTML and DFXP

Format Structure: TTML uses an XML-based format with styling and layout sections while DFXP uses an XML-based distribution format
Styling Support: TTML supports comprehensive XML-based styling while DFXP offers XML-based styling features
Software Compatibility: TTML is primarily used with undefined, undefined, undefined, while DFXP is commonly used with undefined, undefined, undefined
Use Cases: TTML is typically used for professional streaming platforms, while DFXP is preferred for online video distribution

Format Structure Examples

TTML Format Example

<?xml version="1.0" encoding="utf-8"?>
<tt xmlns="http://www.w3.org/ns/ttml" 
    xmlns:ttp="http://www.w3.org/ns/ttml#parameter" 
    xmlns:tts="http://www.w3.org/ns/ttml#styling" 
    xmlns:ttm="http://www.w3.org/ns/ttml#metadata" 
    xmlns:xml="http://www.w3.org/XML/1998/namespace" 
    ttp:timeBase="media" 
    ttp:frameRate="24" 
    xml:lang="en">
  <head>
    <metadata>
      <ttm:title>Sample TTML</ttm:title>
    </metadata>
    <styling>
      <style xml:id="s1" 
             tts:textAlign="center" 
             tts:fontFamily="Arial" 
             tts:fontSize="100%"/>
    </styling>
    <layout>
      <region xml:id="bottom" 
              tts:displayAlign="after" 
              tts:extent="80% 40%" 
              tts:origin="10% 50%"/>
      <region xml:id="top" 
              tts:displayAlign="before" 
              tts:extent="80% 40%" 
              tts:origin="10% 10%"/>
    </layout>
  </head>
  <body>
    <div>
      <p xml:id="subtitle1" begin="00:00:01.375" end="00:00:05.750" 
         style="s1" region="top">TOP SAMPLE TEXT</p>
      <p xml:id="subtitle2" begin="00:00:05.916" end="00:00:10.216" 
         style="s1" region="bottom">BOTTOM SAMPLE TEXT</p>
      <p xml:id="subtitle3" begin="00:00:10.418" end="00:00:15.083" 
         style="s1" region="bottom">He had a great story.</p>
      <p xml:id="subtitle4" begin="00:00:15.391" end="00:00:20.558" 
         style="s1" region="bottom">- Did he tell you what it was about?<br/>- He did</p>
      <p xml:id="subtitle5" begin="00:00:20.750" end="00:00:25.041" 
         style="s1" region="bottom">In 1992, a shipping container<br/>fell overboard</p>
    </div>
  </body>
</tt>

DFXP Format Example

<?xml version="1.0" encoding="utf-8"?>
<tt xml:lang="en" xmlns="http://www.w3.org/ns/ttml"
    xmlns:tts="http://www.w3.org/ns/ttml#styling"
    xmlns:ttm="http://www.w3.org/ns/ttml#metadata">
  <head>
    <styling>
      <style xml:id="defaultCaption" 
             tts:fontSize="10" 
             tts:fontFamily="SansSerif"
             tts:fontWeight="normal" 
             tts:fontStyle="normal"
             tts:textDecoration="none" 
             tts:color="white"
             tts:backgroundColor="black" />
    </styling>
  </head>
  <body>
    <div style="defaultCaption" xml:lang="en">
      <p begin="00:00:03.400" end="00:00:06.177">In this lesson, we're going to<br />be talking about finance.</p>
      <p begin="00:00:06.177" end="00:00:10.009">One of the most important aspects<br />of finance is interest.</p>
    </div>
  </body>
</tt>

What's Preserved in Conversion

Timing information and synchronization
Text content and line breaks
Basic text formatting
Character encoding
Language identification

What's Lost in Conversion

Compatible Software

TTML can be opened with:

DFXP can be opened with:

Conversion Features with Checksub

Automatic TTML format detection
Precise timing conversion from TTML to DFXP
Smart text formatting adaptation
Character encoding handling (UTF-8, Unicode)
Format-specific optimizations for DFXP
Error checking and validation

Convert Your TTML File Now

Ready to convert your subtitles? Our converter maintains timing accuracy and proper formatting while ensuring the best possible compatibility with your target platform.

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