cut-filler

Video-side companion to trim-filler. Takes the clip-local keeps.json (a list of [t0, t1] ranges to keep) plus the input clip, and re-encodes a new clip containing only the kept ranges, concatenated in order.

Invoke

.claude/skills/cut-filler/cut-filler.sh <in_clip> <keeps.json> <out_clip>

• in_clip — clip-local mp4 (post cut-clip + rebase, pre tighten-pace)
• keeps.json — emitted by trim-filler
• out_clip — written mp4 with filler ranges removed

How

Builds a single select / aselect filter expression over the keep ranges and re-encodes once with libx264 + AAC. If keeps covers the entire clip (nothing to cut), the input is copied through unchanged.

Idempotent via <out>.cfmeta (clip mtime + keeps mtime).

Pairs with

• trim-filler — produces the keeps.json this skill consumes.

Caveats

• Always re-encodes (ffmpeg select cannot stream-copy).
• The trimmed transcript is written by trim-filler, not by this skill — downstream skills consume it directly.