> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes.heygen.com/llms.txt
> Use this file to discover all available pages before exploring further.
# High-fidelity looks
> Write a visual spec — every element named, positioned, colored, and timed — to carry a specific look in words.
This is the dial's third setting, [full visual spec](/prompting/specification-dial), pushed all the way: not a word from the [vocabulary](/prompting/vocabulary) list, but every element of a scene written out like a designer's spec. You can carry a specific look in words alone when the prompt reads like a designer's spec — every element named, positioned, colored, and timed. Compare a loose description ("dark night scene, mountain, glowing ring, title fades in") with a spec:
> 8-second 1920x1080 title card. Scene, back to front: #0a0e2a night sky with faint grain; an orange radial glow (#ff6a2b core \~150px, falling off to transparent by \~430px) igniting at the mountain peak's right shoulder from 2s, positioned so its upper falloff reaches the wordmark's baseline; over it a huge concentric ring system (5 rings, 1px strokes at 8% white opacity, innermost ring glowing #4a5fd9) centered 40% from the top; a low-poly mountain (6-8 dark navy facets, #141a3d–#1e2650) filling the lower third with its apex left of center, a white road S-curving up its face with a soft glow; thin horizontal cloud streaks (white, 6% opacity) drifting right at two heights; a man's silhouette, pure black, \~90px tall, bottom-right, fading in at 2.5s. At 3.5s "SHOWREEL" — thin geometric sans, \~140px, 0.35em tracking, white at 90% — fades in per letter across the ring center, the glow bleeding up through the letterforms above the peak. Slow 4% push-in across the full 8s. No audio.
*Rendered from the spec above, unedited.*
Two clauses in this spec were **corrected by building it.** The first draft listed the scene "back to front" but put the rings before a glow it described as sitting *behind* the rings, and it sized the glow at "\~300px" — too small to physically reach the wordmark it was supposed to bleed through, given the ring center and mountain positions the same sentence pins down. Neither error is visible on the page; both are obvious the moment someone renders it. That is the argument for the [validation rule](/prompting/iterating#the-gates-cant-tell-you-its-good) this guide runs on: a spec dense enough to be useful is dense enough to be internally inconsistent, and only a render finds out.
Every element is a primitive the agent can build directly. Two honest limits:
* **Organic illustration** (drawn characters, painterly texture) can't be fully carried by text — words underdetermine a drawing. Steer to geometric shape language ("flat rounded-geometric figure, circle head, no facial features"), or generate the artwork (see [When to generate artwork](/prompting/generated-artwork)).
* **Photographic and live-action content** must be supplied as files — mention the paths explicitly.
## The density contract
A spec tells the builder what each element *is*; a density contract tells it how full every frame must be. The [Level 7 film](/prompting/capstone) states it once and every region obeys — this is the clause in the [full capstone prompt](/prompting/capstone#the-full-prompt-verbatim) that buys it:
> Density: every region fills three roles — one focal element at display scale, at least two supporting elements on their own cues, and the chrome/wire. Asymmetric compositions; display type \~a tenth of frame width; three depth layers with parallax between them \[…]
That's the whole formula, reusable in any prompt: **one focal + at least two supporting + persistent chrome**, composed asymmetrically (60/40, never one element centered in emptiness), display type around a tenth of the frame width, and at least three depth layers so parallax can sell the space. Supporting elements land on their own cues — a frame that fills all three roles at t=0 is a poster, not a scene. Ask for the contract explicitly when a build keeps coming back sparse: "every scene carries one focal element, two supporting elements on staggered cues, and the persistent chrome" is a sentence a builder can be held to.
## Two more worked specs
The same density applied to a product-UI piece and a typographic piece — both one-shot from these exact words. Where a builder had to make a judgment call on the first pass, the spec below pins it, which is the editing loop these specs live by: build, see what the words underdetermined, tighten the words.
> 6-second 1920x1080. A frosted-glass command palette (640x84px, 20px radius, rgba(255,255,255,0.08) fill, 1px rgba(255,255,255,0.25) border, heavy backdrop blur) centered on a #0b0f1a field with two soft accent glows drifting slowly — #5b6cff upper-left, #22d3a5 lower-right, \~400px, 20% opacity. At 0.4s the palette scales in 0.96→1 settling with back.out(1.2). At 0.8s a grey placeholder "Search commands…" types on; at 2.2s it fades out over 0.2s and the query "render 4k" types in white. At 2.8s three result rows (56px tall, 12px gaps: icon square, label, shortcut chip) cascade in as a detached list below the fixed bar, staggered 0.12s, each rising 12px with back.out(1.4). At 4.2s a 10%-opacity #5b6cff fill sweeps left to right across the first row and its shortcut chip pulses once. Rows and glows keep a barely-visible drift to the end. No audio.
*Rendered from the spec above, unedited.*
> 7-second 1920x1080. Off-black #101014 field with fine static film grain at 4%. The word "PRECISION" in \~220px heavy condensed caps (a heavy system face condensed with scaleX 0.82), white, 0.02em tracking, centered: its letters assemble from alternating top/bottom 40px offsets with power3.out and a 0.05s stagger, starting 0.3s. At 1.8s a 2px hairline rule draws left-to-right beneath the word, 60% of its width, centered. At 2.4s a 40px tabular-mono counter fades in below and ticks 99.999 → 00.001 mm over 2.2s with expo.out deceleration. At 5.2s the whole lockup eases to 1.03 scale over 0.5s while the word cools from white to #d8d8de, then settles into a slow ±1% breathing idle to the end. No audio.
*Rendered from the spec above, unedited.*
*Next: [Verified example prompts](/prompting/examples) — the level's gallery, read with the vocabulary you now have.*