Claude Caption Formatter Pro
Convert, validate, and generate captions with timing precision and accessibility
What You Can Do
You can generate captions from transcripts or scripts, convert between subtitle formats (SRT, VTT, ASS, SBV), validate timing synchronization and accessibility compliance, and batch-process multiple caption files. Claude ensures proper formatting, correct timing intervals, and WCAG accessibility standards so your captions are broadcast-ready and compliant.
Features
Convert between SRT, VTT, ASS, SUB, SBV, and more. Claude preserves timing, styles, and speaker information during conversion.
Check for overlapping captions, timing gaps, and duration accuracy. Claude identifies sync issues and suggests corrections with precision to milliseconds.
Verify WCAG 2.1 standards including caption duration, reading speed, color contrast, and caption placement. Get a compliance score and actionable improvements.
Generate captions from transcripts, scripts, or raw audio descriptions. Claude infers natural timing breakpoints and speaker labels automatically.
Process multiple caption files at once using consistent rules. Apply format conversion, validation, or accessibility improvements across your entire project.
Check spelling, grammar, readability, and consistency across all captions. Identify redundancies and suggest stylistic improvements for clarity.
Maintain speaker names, color codes, font styles, and positioning data when converting formats. Custom styles are preserved end-to-end.
Example Output
Convert SRT to VTT:
VEBVTF
00:00:10.500 --> 00:00:14.300 align:start position:10%
Welcome to our tutorial.
00:00:15.000 --> 00:00:18.800
Today we'll learn advanced techniques.
Accessibility Report:
- ✓ WCAG 2.1 Level AA compliant
- Reading speed: 145 WPM (recommended: 160 max)
- Min display duration: 1.2s (good)
- Issues: 2 captions exceed safe duration
Generated Captions from Transcript:
00:00:00,000 --> 00:00:03,500
[Background music fades]
Hey everyone, thanks for watching.
What's Included
- Format Converter: Handles 8+ subtitle formats with automatic detection and lossless conversion including timing and styles.
- Accessibility Validator: Checks compliance against WCAG 2.1, ATSC 608, and CEA-708 standards with detailed reports and remediation suggestions.
- Timing Sync Checker: Identifies timing gaps, overlaps, and sync issues. Claude suggests frame-perfect corrections based on duration and context.
- Caption Generation Engine: Creates captions from raw transcripts with intelligent timing inference and speaker label detection.
- Batch Processing Workflow: Template for applying consistent rules across multiple files—conversion, validation, or enhancement all at once.
- Style Guide Reference: Best practices for caption formatting, punctuation, abbreviations, and readability to match industry standards.
Who It's For
- Video Editors & Videographers
- Accessibility Coordinators
- Content Creators & YouTubers
- Broadcasting & Media Professionals
- Translators & Localization Specialists
Best For
- Converting subtitle file formats
- Ensuring captions meet accessibility standards
- Generating captions from transcripts
- Validating timing synchronization
- Batch processing caption files
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