Avatar Video Builder

Talking-head scripts and settings for HeyGen, Synthesia and D-ID · 32 fields · 5 outputs

Library

Filled only

Use Case

Spoken Script

Avatar Source

Audience

Video Length

Presenter Gender

Apparent Age

Wardrobe

Presenter Notes

Expression Baseline

Gesture Level

Voice Source

Voice Character

Accent

Language

Lip Sync Priority

Pacing

Shot Framing

Background

Lighting

On Screen Elements

Camera Angle

Avatar Tool

Generation Mode

Aspect Ratio

Resolution

Negative Prompt

Platform

Localisation Plan

Batch Plan

Disclosure

Consent Check

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01Main Avatar Prompt

AVATAR VIDEO: Product Explainer for a General Consumer audience PRESENTER: 30s Female in Business Casual EXPRESSION: Friendly Approachable with Subtle Natural Gestures VOICE: Warm Female Alto with a Neutral American accent in English DELIVERY: Natural Conversational FRAMING: Chest Up at Straight On Eye Level BACKGROUND: Blurred Office lit with Soft Even Studio ON SCREEN: Captions TOOL: HeyGen in Text to Avatar Video for 30 to 60 Seconds OUTPUT: 9:16 Vertical at 1080p Full HD AVOID: Uncanny Stiffness

02Avatar Appearance Brief

SOURCE: Stock Avatar Library PRESENTER: 30s Female WARDROBE: Business Casual appropriate for a General Consumer audience EXPRESSION: Friendly Approachable held as the baseline, not a fixed mask GESTURES: Subtle Natural Gestures AVOIDING THE UNCANNY VALLEY Micro movement matters more than resolution - a perfectly still face reads as dead Blinking should be irregular. Metronomic blinking is the fastest tell. Gestures must match the words. Hands moving on the wrong beat is worse than no hands. Match wardrobe to the setting - a suit in a bedroom breaks the illusion CONSISTENCY: for a series, lock the same avatar, wardrobe and Blurred Office across every video AVOID: Uncanny Stiffness

03Voice and Lip Sync Brief

VOICE SOURCE: ElevenLabs Voice CHARACTER: Warm Female Alto ACCENT: Neutral American in English PACING: Natural Conversational SYNC PRIORITY: Balanced LIP SYNC IS WHERE AVATAR VIDEO FAILS Drift almost always appears at the end of a long take - watch the final seconds Short sentences sync better than long ones. Break the script at natural breaths. Numbers, acronyms and brand names are the usual mispronunciations - test them alone If the voice is right but the mouth is wrong, regenerate the sync rather than the whole video MATCH THE FACE TO THE VOICE - a 30s presenter with a much older voice reads as wrong LOCALISATION: Single Language AVOID: Uncanny Stiffness

04Framing and Set Brief

FRAMING: Chest Up ANGLE: Straight On Eye Level BACKGROUND: Blurred Office LIGHTING: Soft Even Studio ON SCREEN: Captions FORMAT: 9:16 Vertical for Instagram Reels EYE LINE SELLS TRUST - the presenter should look into the lens, not slightly past it Leave headroom but not too much. A floating head in empty space looks amateur. VERTICAL CROP: at 9:16 Vertical keep the face in the upper middle, clear of captions BACKGROUND DEPTH: a blurred background hides more artifacts than a flat colour BRAND: keep logos and lower thirds clear of the mouth and hands CAPTIONS ARE NOT OPTIONAL - most viewers watch on mute

05Production and Consent

PRODUCTION AND CONSENT PLAN BATCH: Single Video LOCALISATION: Single Language TOOL: HeyGen in Text to Avatar Video UPDATE THE SCRIPT, KEEP THE AVATAR - that is the whole efficiency of this format DELIVER: 1080p Full HD at 9:16 Vertical for Instagram Reels CONSENT AND DISCLOSURE CONSENT: Stock Avatar Licensed NEVER CREATE AN AVATAR OF A REAL PERSON WITHOUT THEIR WRITTEN PERMISSION That includes employees, clients, public figures and anyone in footage you did not shoot. DISCLOSURE: Check Platform Policy Disclosure rules differ by platform and by country, and they are tightening A synthetic presenter delivering medical, financial or legal information carries extra duty of care Keep records of your consent, licences and generation history

📘 Pro Guide

Avoiding the Uncanny Valley

Micro movement beats resolutionA perfectly still face reads as dead, however sharp it isNumber one fix
Irregular blinkingMetronomic blinking is the fastest tell that it is syntheticDetail
Gestures on the beatHands moving against the words is worse than no hands at allTiming
Match wardrobe to settingA suit in a bedroom breaks the illusion instantlyCoherence
Blurred backgrounds helpDepth hides more artifacts than a flat colour doesPractical
Shorter is saferArtifacts accumulate - long unbroken takes drift moreLength

Lip Sync

Watch the final secondsDrift almost always appears at the end of a long takeWhere it fails
Break at breath pointsShort sentences sync far better than long clausesScripting
Test the hard wordsNumbers, acronyms and brand names mispronounce most oftenAccuracy
Fix the sync, not the videoIf the voice is right and the mouth is wrong, redo the syncEfficiency
Match face to voiceA young presenter with a much older voice reads as wrongCasting
Upload audio for controlSupplying your own audio gives tighter control than text inputTechnique

Framing That Builds Trust

Eye line into the lensLooking slightly past the camera reads as evasiveTrust
Controlled headroomA floating head in empty space looks amateurComposition
Vertical cropsKeep the face upper middle, clear of the caption zoneSocial
Clear the mouthLogos and lower thirds must not sit over the mouth or handsOverlays
Captions alwaysMost viewers watch on mute, whatever the platformUniversal
Consistent series lookSame avatar, wardrobe and background across a setBranding

The Real Efficiency

Update script, keep avatarThis is the whole point of the formatCore benefit
Batch localisationOne avatar, many languages, no reshootScale
Template itBuild once, then swap only the wordsWorkflow
Series consistencyViewers accept a synthetic presenter more once familiarAudience
Know the limitsFor high stakes brand work a real person still usually winsHonest

Consent and Disclosure

Written permission alwaysNever create an avatar of a real person without itNon negotiable
That includes employeesStaff must consent explicitly, not by assumptionCommon mistake
Never public figuresUsing a known face without permission is a serious problemLegal risk
Disclosure is tighteningPlatform and regional rules are changing - check yoursEvolving
Extra care on adviceMedical, financial and legal content carries added dutyResponsibility
Keep your recordsSave consent, licences and generation historyProtection