How to Create Videos with an AI Presenter from Your Phone

What HeyGen is and how its three core workflows work

HeyGen is an AI video platform built around one core idea: you shouldn't need to film yourself every time you produce a video. Its product menu includes Video Avatar (clone yourself once, reuse across future videos), Photo Avatar and Avatar IV (animate a still photo to speak a script), Video Agent (generate a full structured video from a text prompt), Video Translator (translate and lip-sync existing videos into other languages), and AI Studio (a scene-by-scene editor for assembling and refining everything).

Three workflows drive most of what people actually use HeyGen for.

Digital Twin (Video Avatar)

The Digital Twin workflow starts with a short recording session. You turn on your webcam or phone camera, read a provided script on screen, and HeyGen's Avatar IV engine captures your motion, micro-expressions, and voice. That recording becomes the base for your digital twin — a synthetic version of you that can deliver any future script you type in without another filming session. The Avatar IV engine is specifically built to capture the subtle gestures and facial movements that make on-screen presence feel natural rather than robotic, and it pairs the motion model with a lip-sync system so your twin can adapt to new scripts convincingly. Once the twin exists, you can generate different looks for it — home studio, outdoor environment, professional setting — each as a distinct avatar variant without re-recording anything.

Photo Avatar and Avatar IV

For users who don't want to record themselves at all, HeyGen's Photo Avatar feature takes a single still image and turns it into a short talking clip. You upload the photo, paste a script or record audio, choose a voice from the library, set the motion style (including an expressive or emotive preset), and HeyGen renders the result. A 60-second clip typically takes two to three minutes to process. In practice, the results are strongest when the source image is a clean, centered headshot with even lighting and a neutral background — conditions similar to a professional portrait. Photos with complex backgrounds, loose hair, side angles, or inconsistent lighting produce more visible artifacts around the subject's edges and face. HeyGen notes the photo requirements explicitly in the upload interface: recent photos, mix of close-ups and full-body shots, multiple expressions, high resolution.

HeyGen also supports fully AI-generated virtual characters. Using the avatar creation tool, you define the character by name, age, gender, ethnicity, orientation, pose, and appearance description, and the AI generates a visual identity from scratch. This path is useful for faceless content, educational channels, or branded character-led videos without using real people at all.

Video Agent

Video Agent is HeyGen's most ambitious feature. You type a prompt describing what you want — a 30-second social media ad, a product explainer, an internal update — attach your avatar and a style preference, and the AI builds a complete video plan: scenes, pacing, visuals, music, narration, captions. The interface shows you a structured outline with duration, scene count, language, and estimated credit cost before you commit. You can adjust the plan, request changes, and iterate in a chat-style interface before confirming. Once confirmed, the agent sources stock media from Pexels, Getty, Unsplash, and Storyblocks, generates the narration, applies captions with Brand System styling, and renders the full video — which you can then open in AI Studio to refine scene-by-scene. A 39-second, 8-scene video in testing completed in roughly 44 seconds of render time after plan approval.

HeyGen pricing: plans, credits, and what you actually get

HeyGen has five tiers. The pricing page shows both monthly and annual rates, and the gap between them is significant enough to matter for ongoing use.

  • Free Plan: $0 with no credit card required. It gives you 3 videos per month, a maximum of 1 minute per video, 720p export, 500+ stock photo avatars, 1 Custom Digital Twin, and trial access to Premium features including Avatar IV, Video Agent, Video Translation with lip sync, and 30+ languages.
  • Creator Plan: $29 per month billed monthly, or $24 per month billed annually ($288 per year). It gives you videos up to 30 minutes, 1 Custom Digital Twin, unlimited Photo Avatars, 700+ stock video avatars, voice cloning, 175+ languages and dialects, 1080p export, a Brand Kit, watermark removal, and access to all Premium features.
  • Pro Plan: $99 per month billed monthly, or $79 per month billed annually ($948 per year). It includes everything in Creator plus 2,000 credits per month, faster video processing, and 4K video export.
  • Business Plan: $119 per month billed monthly, or $149 per month billed annually. Business adds 5 Custom Digital Twins, videos up to 60 minutes, 4K, 5x Generative Usage, workspace collaboration, centralized billing, auto-reload credits, team member seats at $20 per seat per month.
  • Enterprise Plan: Custom pricing with dedicated support, onboarding, SCIM provisioning, and priority processing.

How the credit system actually works

Premium credits power the advanced features, and understanding the credit costs before subscribing is important. Avatar IV generation costs 20 credits per minute of output video. Generating a new Avatar Look costs 1 credit. Image generation costs 2 credits per image. A Video Agent project visible in testing showed a cost of 20–30 credits for a 39-second clip. On the Creator plan's 200-credit monthly allowance, that translates to roughly 10 minutes of Avatar IV video, 200 avatar looks, or some combination of the above. The Pro plan's 2,000 credits gives you approximately 100 minutes of Avatar IV video per month.

Where HeyGen excels and where it falls short

HeyGen's strongest use cases are narrow but genuinely valuable for the teams they serve.

For corporate training and internal communications, HeyGen is well matched. Teams can update a script, re-render with the same avatar, and distribute a new version without booking talent or filming again. For global businesses that need the same message delivered across multiple languages, the translation workflow — lip-synced output in 175+ languages with the option to proofread the translated script on Pro and above — is one of the strongest in the category and saves substantial time over traditional dubbing workflows.

The limitations become apparent once you move outside those scenarios. HeyGen has no teleprompter. It has no native on-camera recording workflow for users who want to appear as themselves rather than as an avatar.

Avatar quality on Photo Avatar also depends heavily on input quality. Clean, professionally framed headshots produce the best results. Casual photos, images with complex backgrounds, or photos taken at angles other than straight-on produce more visible artifacts.

HeyGen vs BIGVU: which tool fits your workflow?

HeyGen and BIGVU are aimed at different parts of the video production problem. HeyGen starts at the generation step. You bring a script and HeyGen produces a finished avatar-led video. BIGVU starts earlier, with an AI Script Generator to help write content before recording.

The practical difference: HeyGen produces an excellent avatar video and hands you a file. BIGVU connects it to the next step — whether that's captioning, branding, repurposing, or sending directly to a lead.