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Convert QuickTime Text to EBU STL

Convert QuickTime Text to EBU STL

Converting from QuickTime Text (QT) to Spruce STL (STL) while maintaining timing accuracy and subtitle content.

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About QuickTime Text to EBU STL Conversion

A quick guide to converting from QuickTime Text (.qt.txt) to EBU STL (.stl). Learn about format differences, what's preserved, and how to convert your subtitles.

    Key Differences Between QuickTime Text and EBU STL

    • Format Structure: QuickTime Text uses a QuickTime-specific format while EBU STL uses a professional broadcast format with header metadata
    • Styling Support: QuickTime Text includes QuickTime-specific styling while EBU STL includes broadcast-standard formatting
    • Software Compatibility: QuickTime Text is primarily used with undefined, undefined, undefined, while EBU STL is commonly used with undefined, undefined, undefined
    • Use Cases: QuickTime Text is typically used for QuickTime-based workflows, while EBU STL is preferred for broadcast television

Format Structure Examples

QuickTime Text Format Example

{QTtext} {font:Arial}
{plain} {size:20}
{timeScale:30}
{width:160} {height:32}

[00:00:01.000]
First line of subtitle text
Second line of subtitle text

[00:00:05.000]
Next subtitle block

EBU STL Format Example

//EBU STL Subtitle File
$FontName       = Arial
$FontSize       = 30
$ColorIndex     = 1
$TapeNumber     = 1
$PageNumber     = 1
$TotalPages     = 1
$MaxRows        = 11
$TimeCodeFormat = 1

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

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

  • Broadcast-specific features
  • Professional metadata
  • Teletext compatibility

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Compatible Software

QuickTime Text can be opened with:

EBU STL can be opened with:

Conversion Features with Checksub

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

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