Advanced SubStation Alpha to TTML Converter

Convert Advanced SubStation Alpha to TTML

/ass-to-ttml

About Advanced SubStation Alpha to TTML Conversion

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

Key Differences Between Advanced SubStation Alpha and TTML

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

Format Structure Examples

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

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

XML-based styling
Multiple regions
Advanced metadata capabilities

Compatible Software

Advanced SubStation Alpha can be opened with:

Aegisub

TTML can be opened with:

Conversion Features with Checksub

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

Convert Your Advanced SubStation Alpha 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 TTML