Handles emotional expression and time arrangement, directly affecting emotional impact and viewing rhythm.
The core input for lip-sync. Rules:
| Rule | Requirement | Compliant | Violating |
|---|---|---|---|
| Length | Character count ≤ seconds × 3.5 | 4s 'Let's go.' (5 chars) | 4s 14-character long sentence |
| Punctuation | Only ，。！？… | "Why are you here?" | Contains colon / quotation marks |
| End of sentence | Must end with punctuation | "Ready." | "Ready" |
| Multilingual | Non-Chinese target language code | [en]Hello[/en] | Write Hello directly |
Rule of thumb: dialogue limit = shot duration (seconds) × 3.5 (Chinese standard speech ~200–220 characters/minute). Comma ≈ 0.3s pause, period ≈ 0.5s.
Segmented description; each segment contains timestamp + image content + action, at least 3 segments, timestamps use relative offset T00:XX.
Example (5-second close-up):
T00:00 - medium shot, protagonist sitting by window, side light streaming in; slowly looks up, gaze toward window T00:02 - close-up transition, camera slowly pushes to face; confusion turns to determination T00:04 - close-up freeze, eye area; blinks once, pupil reflects window scene
Emotion keywords have strong leverage (one word ≈ a set of style parameters). Principle: concise (1–2 words), clear, no contradictions.
| Category | Recommended Words | Visual Direction |
|---|---|---|
| Positive | joyful / serene / hopeful | High-saturation warm / soft low contrast / warm backlight gradient |
| Negative | melancholic / tense / despairing | Low-saturation blue-gray / high-contrast hard light / extremely dark top light |
| Suspense | mysterious / eerie | Strong contrast cold-warm mix / unnatural green-purple tones |
| Power | epic / fierce | Wide-angle golden-orange dominant / high-saturation hard light cutting |
| Warmth | romantic / intimate | Soft-focus pink-purple / extremely shallow DoF warm tones |
Five-part description (overall / opening / middle / climax / ending), coordinated with the timeline: timeline says what happens, pacing says how time feels to the audience.
Chase scene example:
Overall: tense and rapid | Opening: sudden cut, protagonist rushes out from behind cover | Middle: rapid perspective cuts, urgency builds | Climax: pursued target is within reach, speed peaks | End: target disappears around the corner, suspense with lingering open ending