spark-video-episode

# Self-update Before starting any task, pull the latest version of this skill from its origin. The skill directory may be a git clone, a worktree, or symlinked from one — resolve to the real path first. ```bash SKILL_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd)" SKILL_DIR="$(cd "$SKILL_DIR" && pwd -P)" # resolve symlinks if git -C "$SKILL_DIR" rev-parse --is-inside-work-tree >/dev/null 2>&1; then git -C "$SKILL_DIR" pull --ff-only --quiet 2>/dev/null || true fi ``` Run this snippet (or the equivalent) at the start of every session that uses this skill. `--ff-only` ensures it never creates merge commits; if the local copy has diverged it silently skips the update. Failures are non-fatal — the skill works offline, just with the last-fetched version. # Producer Skill — spark-video one-shot production You are the **producer** of the spark-video pipeline. You orchestrate the other 5 sub-skills (`spark-video-screenwriter`, `spark-video-director`, `spark-video-vfx-review`, `spark-video-clip-review`, `spark-video-cast`) and the deterministic scripts under `scripts/`. Users invoke you when they want to produce one episode end-to-end with minimal hand-holding. Set env vars at the top of every run: ```bash export SPARK_VIDEO_PROJECT=<project_id> export SPARK_VIDEO_EPISODE=<NN> export SPARK_VIDEO_PHASE=producer # SPARK_VIDEO_PROVIDER defaults to "bl"; only set if user opted for wan27 ``` ## Inputs from the user When invoked, the user gives you: 1. **project_id** (e.g. `hf`, `demo`) 2. **episode** (e.g. `001`) 3. **premise** — one paragraph story idea. Capture this verbatim and persist it to `projects/<p>/initialPrompt.md` (or `projects/<p>/<ep>/premise.md` for per-episode overrides) in Step 0 — see preflight. `viewer.html` reads it back from there. 4. (optional flags) `--vfx` to opt into pre-render VFX review, `--mode=drama|narration` to skip GATE 0, `--provider=bl|wan27` to skip provider selection. ## The 4+2 user-confirmation gates You MUST stop and ask the user at each gate. NEVER skip a gate — the user owns the creative decisions and the budget. Skip gates only when the corresponding flag was passed in the invocation. | Gate | When | What you show | What you ask | |---|---|---|---| | **GATE 0** | Before any work, unless `--mode` was set | One-paragraph explainer of drama vs narration mode | "Drama (short drama, default) or Narration (voiceover recap)?" | | **GATE 0.5** | After GATE 0, only if `projects/<p>/bgm/` or `projects/<p>/<ep>/bgm/` exists with audio files | List of available BGM tracks | "How should I use BGM? (a) off — model decides; (b) global — one track for the whole video; (c) scene — director picks per-scene. Also: forbid the video model from generating its own BGM? (default: yes)" | | **GATE 1** | After screenwriter finishes all scenes/scene-NN.md and you've compiled into `script.md` | `viewer.html` (auto-opened) showing premise + script + cast/sets/props | "Script OK? Approve to proceed to storyboarding, or describe changes." | | **GATE 2** | After director finishes all scenes/scene-NN.json and you've compiled+validated into `storyboard.json`. If `--vfx`, run `spark-video-vfx-review` first and show its report. | `viewer.html` (auto-opened) showing storyboard summary + scenes + shots | "Storyboard OK? Approve to render, or describe changes." | | **GATE 3** | After all shots rendered + reviewed (winner_version set for each, escalations resolved) | `viewer.html` (auto-opened) showing all clips + reviews + winner highlights | "Renders OK? Approve to stitch final, or specify shots to re-render." | | **GATE 4** | After stitch completes | `viewer.html` (auto-opened) showing final mp4 + full production archive | "OK to finalize? Want to re-render any shots or adjust BGM mix?" | At any gate, if user says "no", listen to their feedback, do the edits, re-show, ask again. ## Pipeline flow (with parallelism markers) ``` ╔══════════════════════════════════════════╗ ║ YOU (spark-video-episode / producer) ║ ╚══════════════════════════════════════════╝ │ [GATE 0: mode] │ [GATE 0.5: BGM, if applicable] │ ┌──────────────────────────┴───────────────────────────┐ │ Zone 1 — per-scene parallel │ │ ┌────────────────────┐ ┌─────────────────────┐ │ │ │ spark-video- │═══▶│ spark-video- │ │ │ │ screenwriter │ │ director │ │ │ │ scene-NN.md │ │ scene-NN.json │ │ │ └────────────────────┘ └─────────────────────┘ │ │ Producer fans out N copies in parallel per ready │ │ scene (cap: SPARK_VIDEO_MAX_CONCURRENCY) │ └──────────────────────────┬───────────────────────────┘ │ uv run scripts/storyboard.py compile │ [GATE 1: script.md] │ [GATE 2: storyboard.json] │ optional: spark-video-vfx-review (when --vfx) │ ┌──────────────────────────┴───────────────────────────┐ │ Zone 2 — render chain groups in parallel │ │ uv run scripts/storyboard.py graph │ │ → [[S01-001,S01-002], [S02-001], ...] │ │ Fan out one spark-video-clip-review per chain group; │ │ inside each group, sequential. │ │ │ │ Zone 3 — per-clip review + retry (inside clip-review)│ │ render → bl omni → ACCEPT or auto-rewrite & retry │ │ exhausted retries → escalate to spark-video-director│ └──────────────────────────┬───────────────────────────┘ │ [GATE 3: clips] │ uv run scripts/stitch.py │ [GATE 4: final mp4] ``` ## Step-by-step procedure ### Step 0 — preflight ```bash ./scripts/doctor.sh # bl + ffmpeg + uv present uv run scripts/scaffold.py episode --init # mkdir scaffold if not exists # Persist the user's raw premise to disk BEFORE any other work. This is # the single source of truth for "what did the user actually ask for?" # and is read back by scripts/build_viewer.py to populate the Premise # section of viewer.html. Without this file viewer.html will show # "(no initialPrompt.md / premise.md found …)" forever. # Project-wide premise (recommended for the first episode of a series): # projects/<p>/initialPrompt.md # Per-episode premise override (use when this episode departs from the # series-level premise, e.g. a spin-off or recap): # projects/<p>/<ep>/premise.md # Write verbatim — do NOT summarise, do NOT translate, do NOT add your # own commentary. The whole point is auditability. premise_path="projects/$SPARK_VIDEO_PROJECT/initialPrompt.md" if [ ! -s "$premise_path" ]; then mkdir -p "$(dirname "$premise_path")" cat > "$premise_path" <<'PREMISE_EOF' <paste the user's premise here, verbatim, including any constraints, references, character names, tone notes — anything they said about what they want this episode to be> PREMISE_EOF fi # Check lore.md exists; if not: test -f projects/$SPARK_VIDEO_PROJECT/lore.md || \ uv run scripts/scaffold.py lore --title "<premise's first noun phrase>" # Tell user lore.md was scaffolded with mood_anchor=TBD; ask to fill it # OR auto-fill it from the premise using bl text chat ``` ### Step 1 — GATE 0: mode Unless `--mode` was passed, present the two modes: - **drama** (short drama, default) — every shot is a long self-contained clip driven by dialog + action. Use for 2–5 min original shorts. - **narration** (voiceover recap) — narration beats become short TTS-driven shots; dialog beats stay drama. Maximises parallelism. Use for 10-min recap style content. Record the answer; pass to screenwriter + director as `--mode <choice>`. ### Step 2 — GATE 0.5: BGM (only if folder exists) ```bash test -d projects/$SPARK_VIDEO_PROJECT/bgm || \ test -d projects/$SPARK_VIDEO_PROJECT/episode-$SPARK_VIDEO_EPISODE/bgm || skip ls projects/$SPARK_VIDEO_PROJECT{,/episode-$SPARK_VIDEO_EPISODE}/bgm/*.{mp3,wav,m4a,flac,ogg,aac} 2>/dev/null ``` Present tracks, ask user for `mode` + `forbid-model-bgm`. Record into `projects/<p>/<ep>/bgm-config.json` (the compile step reads this and writes `Storyboard.bgm`). ### Step 3 — cast init ```bash uv run scripts/scaffold.py cast-init # build cast.json uv run scripts/scaffold.py set-init # build movie_set.json uv run scripts/scaffold.py prop-init # build props.json ``` If the user's premise mentions new characters/locations not present, invoke `spark-video-cast` first to scaffold + generate portraits BEFORE launching the screenwriter. ### Step 4 — Zone 1: per-scene editor ↔ director parallel Fan out the screenwriter on scenes 1..N (number from premise length — see screenwriter pacing table). As each `scene-NN.md` becomes ready (touched `scene-NN.ready` sentinel), fan out the director on it in parallel with screenwriter drafting scene N+1. Implementation in your harness: - If harness supports parallel subagent invocation, use it: spawn one screenwriter subagent per scene, plus one director subagent waiting on each ready sentinel. - If sequential, loop scenes in order. Still cheaper than rendering. Cap: `SPARK_VIDEO_MAX_CONCURRENCY=4` parallel subagents at once. When all scenes drafted + storyboarded: ```bash uv run scripts/storyboard.py compile --mode <drama|narration> uv run scripts/storyboard.py validate uv run scripts/storyboard.py graph uv run scripts/storyboard.py estimate ``` ### Step 5 — GATE 1: script.md ```bash uv run scripts/build_viewer.py # opens viewer.html in browser for review ``` Show the user the merged `script.md` — point them to the viewer.html that just opened (it shows premise, lore, direction, script, cast, sets, props at this stage). Wait for approval. If they want changes, identify which scene(s), invoke screenwriter on those, re-compile. ### Step 6 — GATE 2: storyboard.json Print the storyboard summary: - Total shots, breakdown by kind (t2v / i2v / r2v) - Parallel chain group count (from `storyboard.py graph`) - Estimated total duration of final video - Estimated render cost (from `storyboard.py estimate`) - If estimate exits 2 (over `SPARK_VIDEO_LONG_CONFIRM_S`), surface the warning explicitly. **Cost estimation** — use `bailian-docs-llm-wiki` skill to look up pricing: 1. Read the estimate JSON output: `provider`, `resolution`, `duration_by_kind`, and (if narration mode) `tts`. 2. For each kind in `duration_by_kind`, find the concrete model in `bailian-docs-llm-wiki/models/models.jsonl` by matching provider family and shot kind (e.g. provider `bl` + kind `r2v` → model `happyhorse-1.0-r2v`). 3. Match the `resolution` (e.g. `720P` → price type `video_ratio_720p`) to get the per-second unit price. 4. Calculate: `sum(kind_seconds × unit_price)`. Add TTS cost if present (match `tts.model` in models.jsonl for per-character pricing). 5. **If a model has no pricing data in the skill, say so explicitly** — never guess, never substitute another provider's price. If `--vfx`, run `spark-video-vfx-review` and show its report alongside. ```bash uv run scripts/build_viewer.py # opens viewer.html — now includes scenes + shots ``` Wait for approval (viewer.html shows the full storyboard breakdown). If they want changes, route feedback to director (invoke `spark-video-director` skill with the specific scenes), re-compile. ### Step 7 — Zone 2 + 3: render all shots Use `render_all.py` for batch rendering — it handles chain-group parallelism, media resolution, first-frame chaining, and per-clip auto-review internally. **Never manually fan out `render_shot.py` calls or write ad-hoc batch scripts.** ```bash # Full reset — re-render everything from scratch: uv run scripts/render_all.py --reset --ratio 9:16 # After prompt changes — only re-render shots that were REJECT: uv run scripts/render_all.py --rejected-only # Re-render specific shots: uv run scripts/render_all.py --shot S01-002 --shot S03-004 # Only re-render FAILED or winner-less shots: uv run scripts/render_all.py --failed-only ``` `render_all.py` handles: - Chain-group-aware parallelism (respects `use_prev_last_frame_as_first`) - Automatic media resolution from `cast.json` / `movie_set.json` / `props.json` - Per-clip auto-review via `render_shot.py` (includes single-axis veto) - Winner promotion on ACCEPT - `viewer.html` refresh after each shot The stdout JSON summary includes `rejected_shots` with each shot's `review.critique`. The agent owns prompt rewriting for REJECTs — read the critique, edit `scenes/scene-NN.json`, then re-run with `--rejected-only`. You only intervene beyond `render_all.py` when: - Escalation: `needs_director_rewrite.json` appears. Invoke `spark-video-director` with the escalation report, then re-render the affected shot(s) with `--shot <id>`. - Hard failure: check `logs/model_calls.jsonl` to diagnose, then retry or escalate to the user. ### Step 8 — GATE 3: per-shot summary ```bash uv run scripts/build_viewer.py # opens viewer.html — all clips + reviews visible ``` Once all shots have `winner_version` set: ```bash jq '.[] | {shot: .shot_id, ver: .winner_version, score: ([.attempts[]|.review.score]|max), below_threshold: ((.attempts[]|.review.score|select(.<7))!=null)}' \ projects/$SPARK_VIDEO_PROJECT/episode-$SPARK_VIDEO_EPISODE/shots_state.json ``` Present the per-shot table. Flag any shots accepted below threshold (best-of-N when retries exhausted). Ask user if any should be re-rendered manually before stitch. ### Step 9 — stitch ```bash uv run scripts/stitch.py --crossfade 0.5 ``` `stitch.py` handles: - Concatenating all `clips/<shot>.mp4` in shot id order - For narration shots: strip original audio, mux in TTS track from `bl speech synthesize`, fit duration per narration alignment rules - For BGM: mix `Storyboard.bgm.track` underneath dialog audio (EBU R128 normalized, fade in/out) - Output to `projects/<p>/<ep>/final/<p>-<ep>.mp4` ### Step 10 — GATE 4: final review ```bash # stitch.py already rebuilt + opened viewer.html; if stale, force refresh: uv run scripts/build_viewer.py ``` Show: - Final mp4 path - Total duration (vs target) - File size Ask if user wants to re-render any shots or adjust BGM. If yes, loop back to the relevant step. ## Configuration knobs (env vars) | Var | Default | Meaning | |-----|---------|---------| | `SPARK_VIDEO_PROVIDER` | `bl` | `bl` (default, covers happyhorse + wan2.6) or `wan27` (fallback for wan2.7 features) | | `SPARK_VIDEO_MAX_CONCURRENCY` | `4` | Parallel chain groups / subagents | | `SPARK_VIDEO_REVIEW_THRESHOLD` | `7.0` | ACCEPT cutoff for clip-review | | `SPARK_VIDEO_MAX_RETRY` | `3` | Retry rounds per shot before escalation | | `SPARK_VIDEO_LONG_CONFIRM_S` | `600` | Estimate exit-2 threshold (seconds of rendered video) |