YouTube Subtitles to TTML Converter

Convert YouTube Subtitles to TTML

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

About YouTube Subtitles to TTML Conversion

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

Key Differences Between YouTube Subtitles and TTML

Format Structure: YouTube Subtitles uses a simple time-coded format while TTML uses an XML-based format with styling and layout sections
Styling Support: YouTube Subtitles provides basic text support while TTML supports comprehensive XML-based styling
Software Compatibility: YouTube Subtitles is primarily used with undefined, undefined, undefined, while TTML is commonly used with undefined, undefined, undefined
Use Cases: YouTube Subtitles is typically used for YouTube videos, while TTML is preferred for professional streaming platforms

Format Structure Examples

YouTube Subtitles Format Example

0:00:01.000,0:00:04.000
First line of subtitle text
Second line of subtitle text

0:00:05.000,0:00:08.000
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

YouTube Subtitles can be opened with:

Aegisub

TTML can be opened with:

Conversion Features with Checksub

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

Convert Your YouTube Subtitles 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