Meeting Transcription

Purpose

Turn long local meeting audio into a validated transcript body without treating a successful model response as proof of quality. This skill owns media preparation, transcription, outlier detection, retry/rescue, assembly, and usage evidence. Downstream business summaries, CRM changes, knowledge-base updates, and customer communication remain the consuming repository's responsibility.

Dependencies

• ffmpeg and ffprobe
• node, jq, and shasum
• The separately managed gemini-files-api skill
• Gemini authentication configured outside this skill

Install the wrapper dependency and this skill into the same reviewed manager root before running the canonical command:

npx --yes skills@1.5.14 add fiveonecode/agent-skills \
  --skill gemini-files-api --agent codex --global --yes
npx --yes skills@1.5.14 add fiveonecode/agent-skills \
  --skill meeting-transcription --agent codex --global --yes
bash ~/.agents/skills/gemini-files-api/scripts/bootstrap.sh

For Claude Code, use the same two pinned commands with --agent claude-code; the bootstrap path is ~/.claude/skills/gemini-files-api/scripts/bootstrap.sh.

The script resolves the Gemini wrapper from:

1. GEMINI_MM, when set;
2. ${HOME}/.agents/skills/gemini-files-api/scripts/gemini-mm.mjs;
3. ${HOME}/.claude/skills/gemini-files-api/scripts/gemini-mm.mjs;
4. ${HOME}/.codex/skills/gemini-files-api/scripts/gemini-mm.mjs for legacy installs.

The bootstrap script follows the same root order and can be overridden with GEMINI_MM_BOOTSTRAP.

The wrapper must support --model, --temperature, --max-output-tokens, --json, --prompt, and --file, and return JSON containing text plus usageMetadata. The orchestration script intentionally omits model-specific thinking controls because supported knobs and levels vary by Gemini model family; a caller-selected model uses its compatible default.

Canonical Command

Run the bundled script from the installed skill directory:

scripts/transcribe_meeting_audio.sh \
  --input /absolute/path/to/meeting.m4a \
  --work-dir /tmp/meeting-transcription-account-date

Defaults:

• gemini-3.1-flash-lite primary model;
• 300 second primary chunks;
• 60 second retry chunks;
• original spoken language preserved;
• temperature 0 and minimal thinking;
• no persistent Gemini file retention.

Use --prepare-only to verify source metadata, hashing, and chunking without API calls. Use --resume after an interrupted run; chunk sets are reused only when their completion marker matches the files on disk. Add --rescue-model <model> only when one-minute retries still fail validation.

Validation Contract

The primary response is suspect when it has:

• empty text or invalid JSON;
• any candidate finish reason other than STOP;
• output tokens at the configured cap;
• long generated runs of I, Yeah, or uh;
• the same substantial line repeated at least five times.

Only suspect five-minute chunks are split into one-minute retries. The script exits non-zero before assembly while any retry remains unresolved. A stronger rescue model may process only those unresolved one-minute pieces.

Outputs

The work directory contains:

• source-metadata.json and source.sha256;
• chunks/, raw/, retry/, and optional rescue/ evidence;
• validation.tsv, retry-validation.tsv, and unresolved-parts.txt;
• accepted-rescue-parts.txt, which limits assembly to rescue outputs accepted by the current validation pass;
• assembled-transcript-body.md with global chunk anchors;
• usage.json with modality token counts;
• run-manifest.json with source and output identity.

Pricing is intentionally not hardcoded. Compare usage.json with current first-party pricing when cost reporting is required.

Evidence Rules

• Treat output as a rough AI transcript, not certified verbatim evidence.
• Preserve original languages; do not silently translate.
• Use generic speaker labels unless identity is grounded independently.
• Prefer [unclear], [inaudible], or [overlapping speech] over invented content.
• Keep raw audio, chunks, and API envelopes outside downstream repositories unless the user explicitly requests approved retention.
• Create temporary evidence with owner-only permissions and repair restrictive permissions before resuming an existing work tree.
• Reconcile names, numbers, dates, prices, and commitments against the source before downstream use.

Completion Gate

• unresolved-parts.txt is empty.
• validation.tsv and retry/rescue reports were reviewed.
• assembled-transcript-body.md, usage.json, and run-manifest.json exist.
• bash -n scripts/transcribe_meeting_audio.sh passes.
• scripts/test_transcribe_meeting_audio.sh passes, including managed-root dependency discovery, interrupted-split recovery, and malformed-response retry coverage.
• A short spoken fixture passes the normal path and an injected repetition/output-limit fixture reaches the retry path.