Tighten pace
Investigation on using Claude Code to automatically generate profitable YouTube videos.
npx -y skills add jperrello/C0BALT_CUT --skill tighten-paceAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
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What its author says it does
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Remove dead air from a clip by collapsing any inter-word gap > gap_max (default 0.18s). Gaps collapse to collapse_to (default 0.08s), or sentence_beat (default 0.15s) when the preceding word ends with . ? or !. Re-emits the clip and a re-timed transcript so downstream subtitle / chunk / title skills align. Use right after cut-clip + rebase to keep pacing punchy.
SKILL.md
2.2 KB, 488 tokens by cl100k_base, as published. Nobody here has run it
tighten-pace
Podcast clips die on dead air. This skill walks a word-timed transcript,
finds any silence longer than gap_max, and collapses that silence to a
short floor — either collapse_to (mid-sentence) or sentence_beat (after
a ., ?, or ! so a beat is preserved between thoughts). Output is a
new clip plus a transcript whose timestamps reflect the tightened timeline,
so chunk-captions, burn-subtitles, and title-transition all align correctly.
Invoke
.claude/skills/tighten-pace/tighten-pace.sh <input_clip> <input_transcript> <out_clip> <out_transcript> [gap_max=0.18] [sentence_beat=0.15] [collapse_to=0.08]
input_clip— clip-local mp4 (post cut-clip + rebase)input_transcript— clip-local word-timed transcript JSONout_clip— written mp4 with silences collapsedout_transcript— written transcript JSON with shifted t0/t1gap_max— silence threshold in seconds; only gaps strictly greater are collapsedsentence_beat— target gap (sec) at sentence boundariescollapse_to— target gap (sec) elsewhere
Env overrides: TIGHTEN_GAP, TIGHTEN_SENTENCE_BEAT, TIGHTEN_COLLAPSE_TO.
How
plan.py walks word pairs. When nxt.t0 - prev.t1 > gap_max, the kept
ranges are split: the previous range ends at prev.t1 + target/2 and the
next starts at nxt.t0 - target/2, so the residual silence after ffmpeg
select+aselect is exactly target seconds. target is sentence_beat
when prev.w ends with ., ?, or !; otherwise collapse_to.
Caveats
- Always re-encodes (select filter cannot stream-copy).
- Idempotent via
<out>.tpmeta(input + transcript mtimes + all three params). - If the transcript has fewer than 2 words, the input is copied through.