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Convert DFXP to SAMI

Convert DFXP to SAMI

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

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About DFXP to SAMI Conversion

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

    Key Differences Between DFXP and SAMI

    • Format Structure: DFXP uses an XML-based distribution format while SAMI uses a standard subtitle structure
    • Styling Support: DFXP offers XML-based styling features while SAMI has standard formatting capabilities
    • Software Compatibility: DFXP is primarily used with undefined, undefined, undefined, while SAMI is commonly used with undefined, undefined, undefined
    • Use Cases: DFXP is typically used for online video distribution, while SAMI is preferred for standard subtitle applications

Format Structure Examples

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>

SAMI Format Example

<SAMI>
<HEAD>
  <TITLE>Sample SAMI File</TITLE>
  <STYLE TYPE="text/css">
    <!--
    P { font-family: Arial; font-weight: normal; color: white; background-color: black; }
    .ENCC { Name: English; lang: en-US; SAMIType: CC; }
    -->
  </STYLE>
</HEAD>
<BODY>
  <SYNC Start=1000>
    <P Class=ENCC>First line of subtitle text<BR>Second line of subtitle text</P>
  </SYNC>
  <SYNC Start=5000>
    <P Class=ENCC>Next subtitle block</P>
  </SYNC>
  <SYNC Start=8000>
    <P Class=ENCC>&nbsp;</P>
  </SYNC>
</BODY>
</SAMI>

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

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    Compatible Software

    DFXP can be opened with:

    SAMI can be opened with:

    Conversion Features with Checksub

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

    Convert Your DFXP 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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