権利を持つ長尺動画から確認済みの縦型ショート動画を5本作る

mkdir -p transcript clips captions shorts probes .claude/skills/video-transcribe .claude/skills/video-rank .claude/skills/video-cut .claude/skills/video-caption .claude/skills/video-vertical
command -v claude
command -v ffmpeg
command -v ffprobe
claude --version
ffmpeg -version
ffprobe -version
ffmpeg -hide_banner -h encoder=libx264
ffmpeg -hide_banner -h encoder=aac
ffmpeg -hide_banner -h filter=subtitles
ffmpeg -hide_banner -h filter=scale

WHISPER_CLI='/absolute/path/to/whisper-cli'
WHISPER_MODEL='/absolute/path/to/approved-model.bin'
LANGUAGE='en'
test -x "$WHISPER_CLI"
test -r "$WHISPER_MODEL"
"$WHISPER_CLI" --help
ffprobe -v error -show_entries format=duration:stream=index,codec_type,codec_name,width,height,sample_aspect_ratio -of json source.mp4

---
name: video-transcribe
description: Transcribe the authorized local source for the five-short workflow.
disable-model-invocation: true
---

Input: rights.json, immutable source.mp4, checked source probe, verified language and local whisper.cpp executable/model. Confirm matching source and model hashes, usable audio and permitted access before any command.
Action: From the checked run directory, confirm source.wav and both transcript output paths do not exist. Extract mono 16 kHz 16-bit PCM source.wav with explicit first-audio mapping and no overwrite. Continue to whisper-cli only after a zero exit and valid WAV readback; use the verified model and explicit language, SRT and JSON output, and translation off. Inspect both outputs, parse source-relative times, and compare representative passages and uncertain names or quotes against source audio. Record a nonzero exit or uncertain output as a manifest blocker before any next stage.
Output: transcript/source.srt and transcript/source.json, recorded hashes, corrections or marked uncertainties, tool and model identity in manifest.json.
Stop: Missing rights, changed inputs, absent audio, empty or malformed transcript, or unverified relevant speech. Do not upload, publish or overwrite accepted files; ask the editor to settle uncertainty.

---
name: video-rank
description: Suggest source moments for human selection of five distinct clips.
disable-model-invocation: true
---

Input: Checked source transcript and hash, immutable source hash and probe duration, rights.json, intended audience. Verify all identities and authorized transcript access.
Action: Suggest more than five moments with numeric source-second start/end, source words, surrounding context and editorial rationale. Treat ranking as a suggestion, never a viral forecast. Have the editor open each candidate in the original and check speaker, wording, facts, context and rights. Record exactly five distinct coherent approved intervals and a rejected-candidate log.
Output: approved-moments.json with order, source hash and five numeric bounds satisfying 0 <= start < end <= source duration.
Stop: Fewer than five permissible, meaningful moments, mismatched hashes, uncertain bounds or missing human approval. Do not invent a fifth excerpt.

---
name: video-cut
description: Cut the five approved source intervals into separate local clips.
disable-model-invocation: true
---

Input: Immutable source.mp4, source hash/probe and five human-approved intervals. Verify hashes and calculate each duration as end minus start.
Action: For each 01-05, confirm its unique output path is unused, then transcode the approved source-relative interval with input -ss, -t duration, explicit first video/audio mapping, libx264, AAC and -n. Continue only on zero exit and file readback. Probe streams and duration, inspect first and last frames, and have the editor watch each whole cut for boundaries, sync and context. Record the exact command and output hash. Any failure or uncertain write is a manifest blocker; never pass that clip to captioning.
Output: Five accepted numbered clips, individual probe records and links to approved intervals in manifest.json.
Stop: Wrong bounds, absent stream, drift, misleading context, output collision or uncertain command result. Read back the existing path first; correct bounds with human approval and use a new filename. Never overwrite or reuse an old clip hash.

---
name: video-caption
description: Create and check local captions from each accepted clip.
disable-model-invocation: true
---

Input: Five accepted clip hashes, verified language and local model identity. Reject stale clips or mismatched source links.
Action: For each actual numbered clip 01-05, verify its accepted hash and unused WAV/raw-SRT paths, then extract its own mono 16 kHz 16-bit PCM WAV with -n. Run whisper-cli only after zero exit and WAV readback, with the matching language and SRT output; translation stays off. Preserve raw SRT. Have the editor correct words, names, numbers, cue timing, overlaps and readability against the actual clip, then save a distinct .checked.srt. Use clip-local times, not source-offset cues. Record failures as blockers before rendering.
Output: Five checked SRTs with raw-ASR and exact clip hash links in manifest.json.
Stop: Any cue outside clip duration, uncertain speech, bad alignment or stale clip hash. Repair and replay before rendering; a recut requires matching new captions.

---
name: video-vertical
description: Render and review five captioned 1080x1920 MP4s.
disable-model-invocation: true
---

Input: Five accepted clip hashes/probes, matching checked SRT hashes, rights record and a human-approved crop or framing plan for each clip.
Action: Check decoded orientation and sample aspect ratio. Choose even integer crop width, height and x/y for each clip; require positive dimensions, nonnegative offsets and a rectangle within the decoded frame. A fixed crop does not track motion. Verify unique output and probe paths are unused. From the established run directory, render each separately with crop, aspect-preserving scale, pad, clip-local subtitles, explicit video/audio mapping, libx264, yuv420p, AAC and -n. Continue only on zero exit and saved-file readback. Create probe JSON without clobbering an existing path, reopen the MP4 and have the editor watch its entire video and audio, checking cut context, every caption, framing, sync, facts and rights. Record any failure or uncertain output as a blocker.
Output: Five distinct accepted 1080x1920 MP4s, hashes, probe JSON, exact source/clip/SRT lineage and UTC human acceptance notes.
Stop: Unknown orientation, invalid crop, missing filter, collision, unreadable file, silent audio, cut-off text, wrong duration, bad context or failed full playback. Inspect uncertain existing outputs; revise to a new filename, probe and watch again. No upload or publishing.

set -e
test ! -e source.wav
test ! -e transcript/source.srt
test ! -e transcript/source.json
ffmpeg -i source.mp4 -map 0:a:0 -ar 16000 -ac 1 -c:a pcm_s16le -n source.wav
test -s source.wav
"$WHISPER_CLI" -m "$WHISPER_MODEL" -f source.wav -l "$LANGUAGE" -osrt -oj -of transcript/source
test -s transcript/source.srt
test -s transcript/source.json

set -e
test ! -e clips/clip-01.mp4
ffmpeg -ss <START_SECONDS> -i source.mp4 -t <DURATION_SECONDS> -map 0:v:0 -map 0:a:0 -c:v libx264 -c:a aac -n clips/clip-01.mp4
test -s clips/clip-01.mp4

set -e
test ! -e captions/clip-01.wav
test ! -e captions/clip-01.srt
ffmpeg -i clips/clip-01.mp4 -map 0:a:0 -ar 16000 -ac 1 -c:a pcm_s16le -n captions/clip-01.wav
test -s captions/clip-01.wav
"$WHISPER_CLI" -m "$WHISPER_MODEL" -f captions/clip-01.wav -l "$LANGUAGE" -osrt -of captions/clip-01
test -s captions/clip-01.srt

set -e
setopt noclobber
CLIP=01
CROP_W=<CHECKED_EVEN_INTEGER>
CROP_H=<CHECKED_EVEN_INTEGER>
CROP_X=<CHECKED_EVEN_INTEGER>
CROP_Y=<CHECKED_EVEN_INTEGER>
test ! -e "shorts/short-${CLIP}.mp4"
test ! -e "probes/short-${CLIP}.json"
ffmpeg -i "clips/clip-${CLIP}.mp4" -map 0:v:0 -map 0:a:0 -vf "crop=${CROP_W}:${CROP_H}:${CROP_X}:${CROP_Y},scale=1080:1920:force_original_aspect_ratio=decrease:force_divisible_by=2:reset_sar=1,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,subtitles=captions/clip-${CLIP}.checked.srt" -c:v libx264 -pix_fmt yuv420p -c:a aac -n "shorts/short-${CLIP}.mp4"
test -s "shorts/short-${CLIP}.mp4"
ffprobe -v error -show_entries format=duration:stream=index,codec_type,codec_name,width,height,sample_aspect_ratio -of json "shorts/short-${CLIP}.mp4" > "probes/short-${CLIP}.json"
test -s "probes/short-${CLIP}.json"