Back to Converter

Convert TTML to Advanced SubStation Alpha

Convert TTML to Advanced SubStation Alpha

Converting from TTML to Advanced SubStation Alpha preserves styling while enabling additional effects.

Convert Now

About TTML to Advanced SubStation Alpha Conversion

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

    Key Differences Between TTML and Advanced SubStation Alpha

    • Format Structure: TTML uses an XML-based format with styling and layout sections while Advanced SubStation Alpha uses a multi-section format with styling and events
    • Styling Support: TTML supports comprehensive XML-based styling while Advanced SubStation Alpha offers advanced styling and animation features
    • Software Compatibility: TTML is primarily used with undefined, undefined, undefined, while Advanced SubStation Alpha is commonly used with undefined, undefined, undefined
    • Use Cases: TTML is typically used for professional streaming platforms, while Advanced SubStation Alpha is preferred for anime and complex styled subtitles

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>

Advanced SubStation Alpha Format Example

[Script Info]
Title: Example ASS File
ScriptType: v4.00+

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,20,&H00FFFFFF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,2,2,2,10,10,10,1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.00,0:00:04.00,Default,,0,0,0,,First line of subtitle text\NSecond line of subtitle text
Dialogue: 0,0:00:05.00,0:00:08.00,Default,,0,0,0,,Next subtitle block

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

  • Advanced styling and effects
  • Multiple layers
  • Custom scripting features

Generate Subtitles with AI

Skip the manual work! Let our AI automatically generate accurate subtitles for your videos. Checksub's advanced AI technology creates professional-quality subtitles in minutes, saving you hours of work.

Try AI Subtitles

Compatible Software

TTML can be opened with:

Advanced SubStation Alpha can be opened with:

Conversion Features with Checksub

  • Automatic TTML format detection
  • Precise timing conversion from TTML to Advanced SubStation Alpha
  • Smart text formatting adaptation
  • Character encoding handling (UTF-8, Unicode)
  • Format-specific optimizations for Advanced SubStation Alpha
  • 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.

Convert to Advanced SubStation Alpha