What happens to cues without begin attributes?

They are skipped because the converter cannot determine their start time.

Can I batch convert TTML files?

Drop several valid files on this page and they open together in the workspace Batch tool with SCC preselected. The batch workflow supports up to 200 files.

What is the maximum file size?

Each subtitle file can be up to 50 MB.

TTML to SCC Subtitle Converter

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TTML

<?xml version="1.0" encoding="UTF-8"?>
<tt xml:lang="en" xmlns="http://www.w3.org/ns/ttml">
  <body>
    <div>
      <p begin="1.000s" end="4.000s">Hello, world!</p>
      <p begin="4.500s" end="8.000s">This is a subtitle file.</p>
      <p begin="8.500s" end="12.000s">Converted locally!</p>
    </div>
  </body>
</tt>

SCC

Scenarist_SCC V1.0
 
00:01:00	9420c8e5ececef2c20f7eff2ec64a180942f
00:04:00	942c
00:04:15	94205468e97320e973206120737562f4e9f4ece520e6e9ece5ae942f
00:08:00	942c
00:08:15	942043ef6e76e5f2f4e56420ecefe361ecec79a1942f
00:12:00	942c

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Supports .ttml, .itt, .xml files up to 50 MB

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How It Works

Upload TTML File

Drag & drop or select your .ttml file

Convert Instantly

We process it locally in your browser

Download SCC

Get your .scc file immediately

More Conversions You Might Need

TTML SCCTTML SRT TTML VTT TTML ASS TTML LRC TTML TXT TTML STL TTML SMI

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SRT SCC VTT SCC ASS SCC LRC SCC SBV SCC SSA SCC STL SCC SMI SCC

Why Choose AllSubConverter?

Your Privacy Matters

Everything runs in your browser. Your files are never uploaded.

Lightning Fast

Optimized processing engine converts files in seconds.

Free & Local

Each file can be up to 50 MB. Batches can contain up to 200 files or 1 GB total.

Works Everywhere

Works on Windows, Mac, Linux, iOS, Android - any modern browser.

Free Online TTML to SCC Converter

This converter reads <p> cues from a TTML document and writes basic SCC output using pop-on caption control codes. Timing is quantized to a 29.97 fps frame grid, common inline TTML tags are removed, and cue line breaks become spaces. The generated text is limited to printable ASCII; unsupported characters are replaced with question marks.

Input Format

TTML

TTML (Timed Text Markup Language) is an XML subtitle format. This converter looks for <p> elements with begin and end, or begin and dur, timing attributes, and accepts second-based or clock-valued timing. Cues without a begin attribute are skipped.

Output Format

SCC

SCC is a text representation used for CEA-608-style caption data. This converter writes the Scenarist_SCC V1.0 file header, timestamped hexadecimal pairs with basic pop-on control codes at 29.97 fps, and no styling, positioning, or broadcaster-specific compliance metadata.

Features

Reads TTML <p> cues with begin/end or begin/dur timing

Writes timestamped SCC hexadecimal byte pairs

Uses basic pop-on caption control codes

Quantizes cue timing to a 29.97 fps frame grid

Converts line breaks to spaces for SCC caption text

Processes files locally in your browser

Why Convert?

SCC can be useful when a caption workflow expects hexadecimal CEA-608-style data.

The conversion reduces timed-text cues to basic caption text and timing.

Start and end timing are retained in the SCC output.

Browser-side processing avoids uploading the subtitle file.

Format Differences

TTML is Unicode XML; this SCC output is limited to printable ASCII.

TTML supports rich inline markup; SCC output carries plain caption text.

TTML timing is converted to a 29.97 fps frame grid.

TTML multiline cues become single-space-separated SCC caption text.

Common Use Cases

Basic Caption Data

Create basic SCC caption data from supported TTML cues for inspection or compatible tools.

Text Simplification

Remove common TTML inline tags and convert cue text to a basic caption representation.

Timing Conversion

Convert TTML begin and end values into SCC frame-grid timestamps.

Related Formats

SRT (SubRip)

Convert TTML to SRT to preserve Unicode text and normal subtitle line breaks.

VTT (WebVTT)

Convert TTML to VTT for a basic web-video subtitle format.

TXT (Plain Text)

Convert TTML to TXT when timing is not required.

Frequently Asked Questions

Does this converter create broadcast-compliant SCC?

No. It creates basic SCC data with pop-on control codes. Broadcast and platform delivery requirements can require additional metadata, validation, and formatting that this tool does not generate.

How are multiline TTML cues handled?

Line breaks are converted to spaces in the SCC caption text.

Is the TTML to SCC converter free?

Yes. There is no registration or watermark, and conversion happens in your browser.

What happens to non-ASCII characters?

The generated SCC text is printable ASCII only. Unsupported characters are replaced with question marks.

Does the output include a Scenarist header?

Yes. The converter emits the Scenarist_SCC V1.0 header before the timestamped caption data.

Is my data sent to a server?

No. Processing stays in your browser and the subtitle file is not uploaded.

Ready to convert your subtitles?

Drop your TTML file here and convert to SCC instantly.

Related Resources

What is TTML?What is SCC?TTML vs SCC ASS vs SCC ASS vs TTML LRC vs SCC