How to create a voice Pack from video
Detect speech, select clips, render audio and export a compatible Pack.
Your quick-start path
Illustrated workflow, not a browser screenshot. Follow the detailed instructions below for exceptions.
Permitted source
Choose a local file you created or have permission to transform.
Trim and label
Keep one clear spoken moment per clip; check its caption and speaker.
Preview and play
Listen to every selected clip, save the Pack and try a complete Round.
0 of 3 checked. This checklist stays on this page only; it does not verify device readiness.
Prepare a small source file
Open Create from video and choose a local recording you may use. MP4 or WebM identifies a container, not a guarantee that every codec inside can be decoded. Start with a short file your browser can play. Keep the source untouched so you can correct a cut later.
Mark the lines
Use the available speech detection or mark segments manually. Listen to each proposed segment before accepting it: detection can split a sentence or include a breath as a line. For an example with a spoken phrase from 2.0 to 4.5 seconds, place the cut around the audible phrase, then refine it by listening rather than trusting the numbers alone.
Edit captions, speakers and order
Write captions that match what is actually said. Give recurring speakers consistent names and check that the sequence makes sense. Preview both the beginning and end of every cut. When two segments overlap, decide whether the overlap is intentional scene context or an editing mistake.
Render and inspect the output
Prepare the selected clips and wait for the tool to finish before switching files. Check for empty or silent lines and inspect any warning. Try the Pack in DubRound: correct looking captions are not proof that the audio plays. If preparation fails, keep the source and try a smaller selection.
Export a Pack, not a movie
Choose the available ZIP export and retain it as your backup. The archive contains reusable material and metadata; it is not a finished MP4 with your voice mixed over a film. Verify the chosen compatibility format before using it in another application. Re-import the saved archive to check ordering, captions and audio.
Recover from common problems
If the source will not decode, try another browser-supported encoding of your own file. If a cut is silent, check that the source has audible audio and that its times are inside the media duration. If processing uses too much memory, shorten the source and close other heavy tabs. Automatic transcription, where offered, is a convenience: inspect and correct it rather than treating it as a verified script.
Keep your work private and portable
Local creation does not automatically publish your source. Check any optional network-processing notice before using that feature. Browser storage is not a cloud backup, and clearing site data may remove work. Keep both the source and exported ZIP, and share only what you have permission to distribute.