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Convert WebVTT to SAMI

Convert WebVTT to SAMI

/vtt-to-smi

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About WebVTT to SAMI Conversion

A quick guide to converting from WebVTT (.vtt) to SAMI (.sami). Learn about format differences, what's preserved, and how to convert your subtitles.

    Key Differences Between WebVTT and SAMI

    • Format Structure: WebVTT uses a web-optimized format with header and cues while SAMI uses a standard subtitle structure
    • Styling Support: WebVTT supports CSS-style formatting and positioning while SAMI has standard formatting capabilities
    • Software Compatibility: WebVTT is primarily used with Google Chrome, Mozilla Firefox, Safari, while SAMI is commonly used with undefined, undefined, undefined
    • Use Cases: WebVTT is typically used for web-based video platforms, while SAMI is preferred for standard subtitle applications

Format Structure Examples

WebVTT Format Example

WEBVTT

00:00:01.000 --> 00:00:04.000
First line of subtitle text
Second line of subtitle text

00:00:05.000 --> 00:00:08.000
Next subtitle block

SAMI Format Example

<SAMI>
<HEAD>
  <TITLE>Sample SAMI File</TITLE>
  <STYLE TYPE="text/css">
    <!--
    P { font-family: Arial; font-weight: normal; color: white; background-color: black; }
    .ENCC { Name: English; lang: en-US; SAMIType: CC; }
    -->
  </STYLE>
</HEAD>
<BODY>
  <SYNC Start=1000>
    <P Class=ENCC>First line of subtitle text<BR>Second line of subtitle text</P>
  </SYNC>
  <SYNC Start=5000>
    <P Class=ENCC>Next subtitle block</P>
  </SYNC>
  <SYNC Start=8000>
    <P Class=ENCC>&nbsp;</P>
  </SYNC>
</BODY>
</SAMI>

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

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    Compatible Software

    SAMI can be opened with:

    Conversion Features with Checksub

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

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