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Furnace: rough cuts before captions

Furnace cuts a long recording down before captions exist, trimming pauses, dropping bad takes and building short-form clips.

What Furnace does

Furnace works on source media before captions exist. It builds a rough cut, and captions follow that cut's clock, so you never caption a line you were going to remove.

Furnace is in the trial, Pro and Max, with Take Cleanup and Cast on Pro and Max; on Lite its control is off. The passes combine in one run.

Preparing the source

  1. Put the source in place

    In Resolve, put the clips in the Ember/Furnace bin in the order you want them played. In an Emberu project, the project's own clips are the source.

  2. Set an In and an Out

    To work on part of a recording, set an In and an Out. Furnace reads that range and leaves the rest alone.

  3. Turn on the passes

    Trim Pauses, Take Cleanup and Cast are separate controls. Turn on only the work you want to review.

Multicam and compound clips work; Emberu uses their mixed audio.

Trim Pauses

Trim Pauses cuts long quiet gaps from the rough cut.

Threshold
How quiet a passage must be to count as silence.
Minimum Gap
How long a silence must run before it becomes a cut. Raise it to keep more natural pauses.
Before / After
How much room to keep on each side of speech, so a cut never clips a syllable.

Open Adjust on a file to preview its cuts on the waveform. The values you set carry to the next file.

Take Cleanup

Take Cleanup drops the parts of a recording that were never meant to be used, and prefers the clean take when several attempts cover the same lines.

  • Crew talk and laughter between takes
  • Filler before a restart
  • False starts
  • Scrapped attempts

Take Cleanup does not run with Scripts.

Review the result before you rely on it; a raw moment may be worth keeping. If Emberu cannot confirm a cleanup, the rough cut stays on its original timeline.

Cast

Cast picks short-form clips from a longer source, so the strongest spoken moments become their own edits.

Clips
How many short-form outputs Cast builds.
Duration
Estimate aims each clip at a target length; Auto lets Cast decide what the material supports.
Instructions
A short brief in your own words: what to favor and what to skip.
Hook
Writes a short opening line and holds it at the top of the frame. Hook lines take the Hook Animation.

Cast can drop spoken lines. If every line has to survive, turn Cast off and use Trim Pauses and Take Cleanup.

The number of clips and their length are targets; the available speech decides what can be built.

Scripts

Scripts keeps the words your client approved. Type, Cast and Take Cleanup are not offered here.

  1. Add each script

    Press + in the Audio card to add a script per card, then paste one script into each. Card order does not have to match the order of the clips: Emberu matches each script to its content.

  2. Check the match

    Fill or remove every card before Start. Review any warning: a script that matched little of its clip is skipped.

Review any coverage warning before you continue.

Single or Multiple

Single

Packs the source clips into one continuous output, for one episode or interview.

Multiple

Each clip becomes its own output, with a gap between sources. Use it when the sources are already separate pieces.

After the rough cut

The rough cut is the timeline captions and polish are built on.

This documentation is indexed in plain text at /llms.txt.

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