Gemini, Microsoft Copilot, Perplexity & the AI Tool LandscapeImage, voice and video tools · Lesson 16 of 19

Voice and video AI: ElevenLabs, HeyGen, Veo and beyond

Article · 16 min · 8 min lecture

Video lecture

Voice and video AI: ElevenLabs, HeyGen, Veo and beyond

15 chapters · about 8 min · full transcript

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Chapter 1 of 15

Voice and video AI

  • Voice-overs
  • Dubbing
  • Avatars
  • Generative video
  • Consent first

The narrated lecture is in production

Every chapter is scripted and ready. Browse the chapters and read the full transcript now — the video will appear here when it’s published.

Chapters

What these tools do

CategoryExamplesTypical uses
Text-to-speech and voiceElevenLabs, voices in ChatGPT/Gemini apps, Microsoft and Google cloud speechVoice-overs, audiobooks, accessibility, IVR prompts
Voice cloning (with consent)ElevenLabs and similarConsistent brand narrator, a founder's voice for updates
Dubbing and translationElevenLabs dubbing, HeyGen translationLocalising videos into Arabic, Urdu, French and more
Avatar presentersHeyGen, SynthesiaTraining, internal comms, product explainers
Generative videoGoogle Veo (and Flow), Runway, OpenAI's Sora, othersB-roll, concept shots, social content
Voice agentsElevenLabs agents, other voice-AI platformsPhone and web assistants for bookings and FAQs

Capabilities and pricing change quickly; test on your own scripts and check each tool's terms for commercial use.

A production workflow that holds up

  1. Script first, approved by a human (and legal/compliance where claims are involved).
  2. Choose a licensed or consented voice/avatar. Stock voices from the tool's library, or a clone made with documented consent.
  3. Generate in short sections so fixes are cheap; use pronunciation controls for brand names and acronyms.
  4. Native-speaker review for every translated or dubbed version: meaning, tone, pronunciation, cultural fit.
  5. Add captions for accessibility and silent viewing.
  6. Disclose synthetic media where platforms or laws require it; keep records of consent and approvals.

Voice-over tips

  • Write for the ear: short sentences, one idea per sentence, spell out numbers where ambiguous.
  • Add pronunciation guidance for names (for example "Al Nahda" or "SaaS").
  • Use pauses (line breaks or punctuation) to control pacing.
  • Listen at normal speed on phone speakers before approving.
  • Never clone a voice or create an avatar of a real person without explicit, informed, documented consent. Tools such as ElevenLabs require verification for professional voice cloning.
  • Do not impersonate public figures or imply endorsements they have not given. This can breach advertising rules, consumer protection and personality or publicity rights, and platform policies.
  • Deepfake transparency: platforms require labels for realistic synthetic media; the EU AI Act's transparency obligations apply from August 2026 in the EU; other jurisdictions have their own rules.
  • Contracts: get written agreements with voice actors and presenters that cover AI use, duration, territories and revocation.

Defending against voice-clone scams

Voice cloning also powers fraud ("CEO" voice notes requesting urgent payments). Protect your organisation:

  • Call-back verification through known numbers for any payment or credential request.
  • Code words or two-person approval for payments above a threshold.
  • Staff training with real examples.

Worked example: bilingual training videos

A Dubai hospitality group turns a written training manual into 12 short videos. Scripts are approved by the training lead, a licensed stock avatar presents in English, and dubbed Arabic versions are reviewed by two native-speaking managers, who correct two terms for local usage. Captions are added in both languages, and each video's description notes that the presenter is AI-generated. Production time drops substantially compared with filming, and updates now take hours instead of a reshoot.

Hands-on

Write a 60-second script using the voice-over tips and, if you have access, generate it with a licensed stock voice. Check pacing, pronunciation and clarity on a phone speaker.

Choosing a tool for the job

JobGood first choiceWatch out for
Voice-over for ads or explainersA text-to-speech tool with licensed stock voicesCommercial licence terms per plan
Consistent narrator across a seriesConsented voice cloneDocumented consent and revocation process
Localising existing videosDubbing or translation toolNative review; lip-sync quality
Internal training presenterAvatar platform with stock avatarsDisclosure; brand tone
B-roll and concept shotsGenerative video (Veo, Runway, others)Realism of people and products; labels
Answering calls or web enquiriesVoice agent platformEscalation to humans; recording and data rules

Accessibility is a bonus, not an afterthought

AI voice and captioning make content accessible to people with visual or hearing impairments and to non-native speakers. Always publish captions or transcripts, and check automatic captions for names and technical terms.

Pitfalls

  • Cloning voices "just for a test" without consent.
  • Skipping native review of translations.
  • No disclosure of realistic synthetic presenters.
  • Trusting urgent voice requests for payments.

How to measure success

Faster, cheaper localisation and training content, zero consent or impersonation issues, and a payment-verification process that would stop a voice-clone scam.

Key takeaways

  • Voice and video AI enables voice-overs, dubbing, avatar presenters and accessibility at scale.
  • Approve scripts first, use licensed or consented voices/avatars, review with native speakers, and keep records.
  • Never clone voices or likenesses without explicit consent; don't impersonate or mislead.
  • Follow platform disclosure rules for realistic synthetic media and use verification to defend against voice scams.

Check your understanding

Quick questions to lock in the lesson. They don’t count towards your certificate.

  1. A client asks you to clone a celebrity's voice for an ad without permission. What should you do?
  2. What's the most important step when dubbing a video into a language you don't speak?
  3. Which practice helps defend a company against voice-cloning scams?

Put it into practice

Write a 60-second script using the voice-over tips and, if you have access to a voice tool, generate it with a licensed stock voice. Run the quality checklist.

Enrol for free to save your progress

Reading is always free. Enrol to keep your place, take the final assessment and earn a verifiable certificate.