Caption Converter

About This Tool

This tool converts caption files between common formats to support YouTube uploads and multi-platform distribution. It accepts SRT, VTT, TTML/DFXP, and SBV input and renders output in the selected target format, preserving cue text and timing. Conceptually, the tool parses the input into a cue list, applies a unified timing representation, and re-emits the data in the target syntax. It is valuable for video creators, editors, translators, and compliance teams that publish captions across platforms. The core value lies in format interoperability, predictable timing, and UTF-8-safe handling of multilingual text. Use cases include exporting an SRT from a local editor to WebVTT for YouTube, migrating TTML archives to SRT for legacy players, or batch-converting large caption libraries. Core features include explicit input/output format pairing, optional timestamp offset, and format-aware rendering. Advanced capabilities cover detection of common anomalies, encoding normalization, and batch-ready processing for large datasets. The tool emphasizes data integrity—texts remain unchanged unless escaping is required by the target format, while timing is adjusted precisely according to user input. This enables faster caption workflows, reduced manual reformatting, and consistent accessibility across platforms.

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