The Synchronifier LE

The Synchronifier LE is a tool designed to add time code to legacy transcripts that currently lack time-code synchronization. The tool takes an Original Transcript (UTF-8 .txt) file and a Timecode Reference file (WebVTT or SRT) and pulls the time code from the machine-generated VTT/SRT file and places it (as accurately as possible) in the corresponding locations in the legacy transcript. For best accuracy, the reference VTT should not group multiple speakers into paragraphs; short, granular cues map best to the legacy transcript.

All processing occurs locally in your web browser—no files are uploaded or stored—and the output stays on your device.

Help / About

Original Transcript Preview

Expected: UTF-8 .txt.

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Copy to Clipboard

Timecode Reference Preview

Timecode reference file (WebVTT or SRT); ideally granular cues with speaker tags (<v Speaker N> or NAME:).

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Copy to Clipboard

Analyze & insert timecode at each speaker change. Ready.

Output Preview (TXT)

Copy to Clipboard Export Sync (.txt) Export Sync (.vtt)

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Media Preview

Export Sync (.txt) Export Sync (.vtt)

Help / About

How to Use the Synchronifier

1) Load your Original Transcript (UTF-8 .txt).
2) Load your Timecode Reference (WebVTT or SRT).
   • For best accuracy, do NOT group multiple speakers into one paragraph in the reference VTT;
     short, granular cues map best.
   • If SRT is used, include speaker tags (e.g., “NAME: …” or <v Speaker>).
3) Click “Synchronify” to insert timecode at each speaker change.
4) Export TXT and/or VTT outputs.
5) (Optional) Load media and click any [HH:MM:SS] in the output to seek & verify.

Notes
• All processing occurs locally—no files are uploaded or stored.
• The human transcript is text-authority; the reference file is time-authority.
• Bracketed asides [like this] and … ellipses are ignored during matching to improve alignment.

Disclaimer
This tool is provided for non-commercial and archival purposes and is used at your own risk.
No warranty is expressed or implied; results should be reviewed for accuracy before publication or deposit.