Extend Lab
Plan multi-clip Extend-from-Frame chains — plate gates, one move per clip, motion handoffs, then copy a director packet. Pairs with last-frame recap and delivery.
Chain presets
Project
Character id must match DNA inject blocks
Clip timeline
Alley establish
clip_01
Extend rules
Plate lock before clip 01 video
No hero i2v until plate_status = locked.
Generate stills with DNA inject until one plate is approved. Only then spend video seconds on clip_01. Draft plates burn quota and break identity later.
One primary move per clip
Push OR track OR pan — not three at once.
Short clips cannot carry complex blocking. Pick a single motion_vector. Static stills with hard cuts remain valid if motion fails QA.
Recap every boundary
Write LAST_FRAME_RECAP + motion_out before planning N+1.
Sequence Director and Multi-Clip Continuity read the recap, not your memory. Missing motion_out is the #1 extend drift cause.
DNA on every packet
Prepend CHARACTER_DNA inject on each clip prompt.
Extend does not magically remember face locks. Treat each clip as a new handoff that still carries DNA + DoP lines.
Chain QA before stitch
Identity No-Go stops the chain — repair only.
Do not rewrite the Bible or freestyle wardrobe to “fix” a No-Go. Repair the failed clip or re-lock the plate.
Keep chains short early
2–4 clips for first teasers.
Long chains multiply drift risk. Ship a 2-clip proof before a 6-clip odyssey. Prefer still montage if motion is not ready.
Inherit DoP — no palette freestyle
Same key side, grade, and lens set across the chain.
Clip N+1 may change framing size but not the visual language card. Grade and practical colors stay continuous.
Match motion_out → motion_in
Outgoing vector must seed the next clip.
If clip_01 ends on a slow push continuing, clip_02 motion_in continues that push (or explicitly holds). Contradictory vectors read as teleport cuts.
Count seconds before generate
Sum durations · prefer 6s hero clips.
Video is priced per second. Draft with stills and one hero 6s; only then fill support clips. Attach a quota note to the chain packet.
Picture first — sound later
Silent chain is valid for early QA.
Lock motion and identity before writing music/SFX briefs. Sound will not fix identity drift or weak coverage.
Chain packet
Paste into Studio chat or save with your project pack
EXTEND CHAIN PLAN — Studio Academy Project: Neon Courier teaser Character: lead_01 Clips: 3 · Total motion budget: ~18s (count API seconds separately for stills) RULES 1. DNA inject on every packet 2. plate_status=locked before any i2v / hero 6s 3. One primary move per clip 4. LAST_FRAME_RECAP + motion_out at every boundary 5. Chain QA Go before stitch · identity No-Go = repair only 6. Inherit DoP — no freestyle palette CLIPS --- clip_01 (6s) · Alley establish framing: wide · eye-level · subject left of center action: Courier at alley mouth; rain; neon readable; slow hold then tiny push move: static → micro push-in motion_in: from locked wide plate motion_out: slow push continuing toward subject; rain down-left emotion: watchful, quiet dread plate_status: locked notes: DNA inject · DoP teal/amber · plate locked before i2v handoff: write LAST_FRAME_RECAP for clip_01 before planning clip clip_02 --- clip_02 (6s) · Medium courier framing: medium · eye-level action: Bag left; messenger bag; wet jacket sheen; walks deeper two steps move: slow track forward motion_in: continues push from clip_01; bag strap left shoulder motion_out: track settles to MS; eyes toward lens axis emotion: jaw set, focused plate_status: locked notes: Inherit wardrobe + bag · one move only handoff: write LAST_FRAME_RECAP for clip_02 before planning clip clip_03 --- clip_03 (6s) · Identity button framing: close · 50–85mm language · eye-level action: Face hold; rain flecks; practical amber rim; hard cut ready move: static hold motion_in: from MS settle; face fills frame motion_out: hold for button / title safe emotion: quiet dread, eyes locked plate_status: locked notes: Identity CU not cropped ultra-wide · chain QA before stitch handoff: write LAST_FRAME_RECAP for clip_03 before planning clip STITCH ACTIVATION ACTIVATE SEQUENCE_DIRECTOR ACTIVATE MULTI_CLIP_CONTINUITY ACTIVATE IMAGINE_HANDOFF ACTIVATE QA_GUARDIAN ACTIVATE IDENTITY_LOCK Mode: Extend-from-Frame chain Start: locked plate for first motion clip On No-Go: repair clip only — do not rewrite Production Bible. NEXT 1. Build recaps in /recap per boundary 2. Packets in /lab with DNA prepend 3. Run /delivery before client handoff