Smart Stuff Studios · Directive 7 · premiere.smartstuffstudios.com

Wacky Birthday Video
Name-Swap Engine

One pre-rendered clip library and one cached montage serve every customer order. Only three name slots change per order — the opening title card, the mid-song shoutout, and the finale sky-writing. Every film on this page was produced from byte-identical shared assets (proven by sha256 in the recipe table below).

21shared assets
3name slots
52.0sfilm length
-14LUFS target
2orders built

The films — orders: Billy, Sofia

Billy — 16:9 film

Billy — 9:16 reel

Sofia — 16:9 film

Sofia — 9:16 reel

Name-swap recipe

Emitted per order as name_swap_recipe.json: every slot, its timecode range, the parameters that changed, and the sha256 of every reused pre-rendered asset.

Exactly what swapped for this order

Architecture — one-time library vs per-order swap

ONE-TIME LIBRARY (built once)

  • 10 pre-rendered beat clips
  • 1 cached, normalized, sha256-pinned montage
  • 1 master song (the earworm)
  • Font + art system

cache/montage.mp4
cache/montage.sha256
cache/montage.key.json

→

PER-ORDER SWAP (the 10%)

  • Slot 1 — opening title card: NAME + HAPPY BIRTHDAY
  • Slot 2 — mid-song shoutout: kinetic lower-third + spoken NAME over ducked music
  • Slot 3 — finale sky-writing: NAME written in the sky

name_swap_recipe.json
swapped[]