How does the tool determine if a subtitle is readable?

The tool uses `check_readability_risk` to evaluate the Characters Per Second (CPS). If the rate exceeds 15 CPS, it flags a high risk level and suggests fragmentation.

Can I split long segments into multiple blocks?

Yes, the `generate_subtitle_blocks` tool automatically decomposes heavy segments into multiple timestamped blocks that satisfy character and duration constraints.

What are the character limits per line?

To prevent eye strain, the engine ensures no single line exceeds 42 characters and no block contains more than two lines.

Subtitle Readability Pacer MCP Connector for Claude

A+

Calculate optimal subtitle block distribution and timing based on speaking rate.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

The Subtitle Readability Pacer is a calculation engine designed to prevent reading fatigue by ensuring subtitles do not move faster than the human eye can process. Using tools like calculate_speaking_rate, check_readability_risk, and generate_subtitle_blocks, it analyzes text density and duration to maintain optimal viewing comfort. The system enforces a strict 15 Characters Per Second (CPS) threshold and ensures no subtitle block exceeds 42 characters per line or two lines in total, mathematically slicing segments into timestamped blocks that match the original duration.

subtitlesreadabilityvideo-processingaccessibility-toolscaptioning

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_a26ll7OBqreO3wLYmK6UBPmdn6AfcHoeptdmuWBk/mcp

② Claude Code (terminal)

claude mcp add --transport http subtitle-readability-pacer https://edge.vinkius.com/vk_preview_a26ll7OBqreO3wLYmK6UBPmdn6AfcHoeptdmuWBk/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "subtitle-readability-pacer": {
      "url": "https://edge.vinkius.com/vk_preview_a26ll7OBqreO3wLYmK6UBPmdn6AfcHoeptdmuWBk/mcp"
    }
  }
}

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