SubViewer to TTML Converter

Convert SubViewer to TTML

/subviewer-to-ttml

About SubViewer to TTML Conversion

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

Key Differences Between SubViewer and TTML

Format Structure: SubViewer uses a header-based format with simple timing while TTML uses an XML-based format with styling and layout sections
Styling Support: SubViewer provides basic styling through header definitions while TTML supports comprehensive XML-based styling
Software Compatibility: SubViewer is primarily used with undefined, undefined, undefined, while TTML is commonly used with undefined, undefined, undefined
Use Cases: SubViewer is typically used for legacy video players, while TTML is preferred for professional streaming platforms

Format Structure Examples

SubViewer Format Example

[INFORMATION]
[TITLE]Example SubViewer File
[AUTHOR]Subtitle Editor
[SOURCE]Movie Title
[PRG]Subtitle Editor
[FILEPATH]movie_subtitles.sub
[DELAY]0
[CD TRACK]0
[COMMENT]Example subtitle file
[END INFORMATION]
[SUBTITLE]
[COLF]&HFFFFFF,[STYLE]bd,[SIZE]18,[FONT]Arial

00:00:01.00,00:00:04.00
First line of subtitle text|Second line of subtitle text

00:00:05.00,00:00:08.00
Next subtitle block

00:00:10.00,00:00:15.00
This is another subtitle|With multiple lines of text

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>

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

No features are lost in this conversion. The target format supports all capabilities of the source format.

Compatible Software

SubViewer can be opened with:

TTML can be opened with:

Conversion Features with Checksub

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

Convert Your SubViewer 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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