whisperx

Use when someone needs word-level timestamps from audio — lyric alignment, cut-safe line boundaries, or caption source timing before burn-in with video-editing.

Prerequisites

Install and load these skills before generating (skip if already in context via @pruna):

Skill	Description	Install
generation-diversity	Use when writing any generative prompt — ritual seed, explicit structure, scenario axes, and quality gates before paid API calls.	npx skills add PrunaAI/pruna-skills@generation-diversity -y
pruna-api	Use before any Pruna or Replicate HTTP call — credentials, upload/poll/download, parallel batches, and agent safety.	npx skills add PrunaAI/pruna-skills@pruna-api -y

Or install the full suite once: npx skills add PrunaAI/pruna-skills@pruna -y

Follow each skill's Before generating / craft sections — do not restate guide content here.

Agent habit

In the first reply, name `whisperx` in backticks, confirm REPLICATE_API_TOKEN (or stop with signup links from pruna-api), then ask for required inputs. Open intake → generation-diversity clarification intake before the first POST. Redirect when When NOT to use fits better.

When NOT to use

Use a different skill instead:

Skill	Description	Install
music-2.5	Use when someone wants an original AI song with vocals — sung lyrics, a style prompt track, or source audio for a music video.	npx skills add PrunaAI/pruna-skills@music-2.5 -y
gemini-3.1-flash-tts	Use when someone needs spoken narration or voiceover — explainer tracks, documentary lines, or voice to pair with generated video.	npx skills add PrunaAI/pruna-skills@gemini-3.1-flash-tts -y
video-editing	Use when assembling or polishing already-rendered clips with ffmpeg — concat, crossfades, burned captions and subtitles, text/logo overlays, before/after sliders, background music beds, platform export — or when composing a multi-layer HTML combination video with Hyperframes. Not for AI video generation, prompt craft, or model-based video edits.	npx skills add PrunaAI/pruna-skills@video-editing -y

Environment

bash

export REPLICATE_API_TOKEN=r8_...

HTTP / pipeline

Prefer the repo helpers (they upload local audio and write JSON + SRT):

bash

# Agent: follow phase table in this SKILL.md \
  --song output/my-mv/song.mp3 \
  --out output/my-mv/whisperx_transcript.json \
  --initial-prompt "First few lyric lines help recognition"

# Agent: follow phase table in this SKILL.md \
  --cuts output/my-mv/cut_manifest.json \
  --transcript output/my-mv/whisperx_transcript.json \
  --song output/my-mv/song.mp3

In a music-video workflow, run this skill during the align phase — see music-video.

Before generating

1. Complete Prerequisites guide reading order.
2. Confirm audio_file (HTTPS URL — helpers upload local files), language, and align_output: true for word-level cut alignment. When listing inputs, name REPLICATE_API_TOKEN (Replicate — not PRUNA_API_KEY).
3. Model notes: set initial_prompt to the first lyric lines for better rap/sung recognition. Optional diarization for multi-voice battles.

Required input

• audio_file (HTTPS URL)

Common optional fields

• language — ISO code, e.g. en
• align_output — true for word-level timestamps (required for cut alignment)
• initial_prompt — first lyric lines
• diarization — speaker labels

Typical next steps

Common follow-ons after this skill:

Skill	Description	Install
music-video	Use when someone wants a full music video — original song or vocals, performance clips, B-roll, and lyric-synced edits.	npx skills add PrunaAI/pruna-skills@music-video -y
music-2.5	Use when someone wants an original AI song with vocals — sung lyrics, a style prompt track, or source audio for a music video.	npx skills add PrunaAI/pruna-skills@music-2.5 -y
video-editing	Use when assembling or polishing already-rendered clips with ffmpeg — concat, crossfades, burned captions and subtitles, text/logo overlays, before/after sliders, background music beds, platform export — or when composing a multi-layer HTML combination video with Hyperframes. Not for AI video generation, prompt craft, or model-based video edits.	npx skills add PrunaAI/pruna-skills@video-editing -y