Turn Blog Posts Into Videos

Repurpose written content into scripted, presented, subtitled video — one post, two channels.

This workflow takes a single blog post and transforms it into a polished video with a realistic AI presenter, dynamic visuals, and professional captions—ready to publish on social media or YouTube. The combination works because each tool specializes in a distinct part of the pipeline: ChatGPT extracts and refines the script, InVideo AI generates matching visuals and edits, HeyGen adds a lifelike avatar presenter, Captions polishes the timing and adds auto-captions, and Descript provides final audio cleanup and transcript-based fine-tuning. The result is a cohesive, engaging video that repurposes written content without requiring any video production skills. This workflow is for content creators, marketers, and educators who want to scale video output from existing written material quickly and cost-effectively.

The workflow, step by step

1
Extract and script the narrative
ChatGPT
Use ChatGPT to read the blog post and generate a concise, conversational video script. It excels at summarizing key points, adjusting tone, and structuring a storyboard because of its advanced language understanding and ability to follow instructions.
Hand-off → Carry the finalized script text as a plain document to the next step.
2
Generate matching visual scenes
InVideo AI
Paste the script into InVideo AI and let its intelligent agent automatically create a rough video with background scenes, stock footage, and text overlays. It’s faster than manual editing and provides a solid visual foundation.
Hand-off → Export the rendered video file (with scenes and text) as an MP4 to the next step.
3
Add a lifelike AI presenter
HeyGen
Upload the script to HeyGen to generate an avatar video that reads the script naturally. HeyGen offers the most realistic lip-sync and facial expressions among AI avatars, which increases viewer engagement.
Hand-off → Download the avatar video (separate or as an overlay clip) without audio or just the video track for compositing. Also keep the original script for captions.
4
Sync narration with visuals and add captions
Captions
Import both the scene video from InVideo AI and the avatar clip into Captions. Use its auto-editing to align the avatar with the background, and automatically generate and style subtitles. Captions provides professional-looking edits in minutes.
Hand-off → Export the combined video with embedded captions as a high-resolution file to the final step.
5
Fine-tune audio and transcript errors
Descript
Load the video into Descript to clean up any audio glitches, remove filler words, and adjust pacing by editing the transcript. Descript’s transcript-based editing allows precise, text-level control without re-recording.
You end with: You now have a polished, publish-ready video file with clean audio, smooth visuals, accurate captions, and a professional presenter.

What this stack costs per month

Running on free tiers$0every tool here has a permanently free plan

All entry paid plans$53.99/mosum of 2 published starting prices, one seat each, plus 3 tools without published pricing

ChatGPTfreemium, pricing not published
InVideo AIfreemium, pricing not published
HeyGenfrom $29/mo · free tier
Captionsfrom $24.99/mo · free tier
Descriptfreemium, pricing not published

Computed from each vendor's published monthly prices as we last verified them — tap a tool for its full pricing breakdown and price history.

All tools in this stack

ChatGPT

freemium

General-purpose AI assistant for writing, research, coding, images, voice, agent...

Rating

4.6

Category

通用助手与模型平台

Pricing

ChatGPT uses a freemium plan ladder. Individual plans include Free, Go, Plus, and Pro. Official pricing pages list Free at $0, Go at $8/month, Plus at $20/month, and Pro from $100/month. OpenAI Help says Pro has two usage tiers: the $100 Pro tier has lower allowances than the $200 Pro tier. Business is a self-serve team workspace with standard ChatGPT seats at $25/user/month when billed monthly or $20/user/month when billed annually, with a 2-seat minimum. Enterprise and Edu are managed organization plans with sales-led pricing and optional flexible credit pricing for products such as Codex, ChatGPT for Excel/Sheets, ChatGPT for PowerPoint, and Workspace Agents. ChatGPT for Teachers is free through June 2027 for verified U.S. K-12 educators.

InVideo AI

freemium

AI video agent that turns prompts, scripts, models, avatars, voices, stock media...

Rating

4.0

Category

视频生成与剪辑

Pricing

InVideo AI's official pricing surface lists Individual and Team & Enterprise plan families. The official Help Center confirms Free, Plus, Max, Generative, Team Standard, Team Premium, and Enterprise. Free is $0 with limited credits. Plus is $20/month or $200/year, about $17/month, with 75 credits/month. Max is $100/month or $1,000/year, about $85/month, with 390 credits/month. Generative is $200/month or $2,000/year, about $170/month, with 800 credits/month. The official pricing API also exposes Elite at $1,000/month or $10,800/year, with 4,250 credits/month. Team Standard is $50/seat/month or $40/seat/month when billed annually, with 160 credits/seat/month and a 2-seat minimum. Team Premium is $500/seat/month or $400/seat/month annually, with 1,600 credits/seat/month. Enterprise is custom pricing for organizations that need advanced security, compliance controls, model access control, RBAC, analytics, audit logs, onboarding, dedicated success management, Slack connect, and invoice/PO billing. Credits reset every billing cycle and unused plan credits do not roll over. Video model costs vary by model, duration, resolution, video input, and audio.

HeyGen

freemium

AI video platform for creating avatar videos, localized dubbing, digital twins, ...

Rating

4.4

Category

视频生成与剪辑

Pricing

HeyGen's official pricing page lists Free, Creator, Pro, Business, and Enterprise web plans. Free is $0/month and includes 3 videos per month, videos up to 1 minute, Avatar IV and Video Agent access, 500+ stock Digital Twins, 1 Custom Digital Twin, and 30+ languages. Creator is $29/month, or $24/month if paid annually according to the official pricing FAQ, and includes 600 credits, videos up to 30 minutes, 1080p export, fast processing, unlimited Photo Avatars, watermark removal, Voice Cloning, advanced AI image and video models, 175+ languages and dialects, and credit rollover. Pro is $49/month and includes 1,000 credits, 4K export, faster processing, customizable monthly usage, and edit/proofread controls for translation scripts. Business is $149/month plus $20/seat/month and includes 1,500 credits, 60-minute videos, 4K export, fastest video processing, 2x concurrency, 5 Custom Digital Twins, SAML/SSO, centralized billing, top-up or auto-reload credits, workspace collaboration, interactive video, SCORM export, LMS integrations, and integrations with n8n, Make, HubSpot, and Zapier. Enterprise is Contact Sales and adds flexible video generation, no video duration max, highest concurrency, multi-workspace control, proofreader seats, centralized role and access management, SCIM, MFA, commercial terms, priority support, a dedicated customer success manager, onboarding, Enterprise Community access, and invoice billing. API pricing is separate: Pay-As-You-Go starts with a $5 top-up, while API Enterprise is Contact Sales.

Captions

freemium

AI video editor and generator for short-form creators, with captions, avatars, d...

Rating

4.1

Category

视频生成与剪辑

Pricing

Captions uses a subscription and credit model. The official pricing page highlights Max at $24.99/month, Scale at $69.99/month, Scale 2x at $139.99/month, Scale 4x at $279.99/month, and Enterprise with custom pricing, with a note that displayed prices reflect iOS plans. The official Subscriptions & Plans help page adds the Free plan, Android-only Lite at $4.99/month, Pro/Starter at $9.99/month with 200 monthly credits, Max at $24.99/month with 500 monthly credits, Scale at $69.99/month with 1,400 credits, Scale 2x with 2,800 credits, and Scale 4x with 5,600 credits. Credits refresh monthly on paid plans, while Free credits are lifetime credits and do not refresh. Unused paid credits can roll over up to two extra months, so the balance can hold up to 3x the monthly allowance. Separate Mirage API pricing is usage-based: styled video captions cost $0.15 per input minute, and Mirage Video 1 costs $0.175 per generated second in 6-second increments.

Descript

freemium

Transcript-first AI editor for recording, editing, polishing, translating, and p...

Rating

4.4

Category

视频生成与剪辑

Pricing

Descript's official pricing page lists Free, Hobbyist, Creator, Business, and Enterprise. The paid self-serve tiers are priced per person/month: Hobbyist is $24 monthly or $16 with annual billing; Creator is $35 monthly or $24 with annual billing; Business is $65 monthly or $50 with annual billing. The Free plan is $0 and includes 60 media minutes per month, a one-time 100 AI-credit grant, 720p watermark-free export, limited Underlord and AI tools, 1 GB file upload size, and 5 GB cloud storage. Hobbyist includes 600 media minutes / 10 hours per month, 400 AI credits per month, 1080p watermark-free export, Underlord, Studio Sound, Remove Filler Words, Create Clips, AI Speech, 10 GB file upload size, and 100 GB cloud storage. Creator includes 1,800 media minutes / 30 hours per month, 800 AI credits per month, 4K export, full Underlord access, 20+ AI tools, generated video, unlimited royalty-free stock media, top ups, up to 3 seats, 20 GB file upload size, and 1 TB cloud storage. Business includes 2,400 media minutes / 40 hours per month, 1,500 AI credits per month, team-wide Brand Studio, translation and dubbing proofread, custom avatar generation, priority support with SLA, top ups, up to 5 seats, 50 GB upload size, and 2 TB cloud storage. Enterprise is custom and adds SSO/SCIM, granular brand controls, custom AI credits, custom media minutes, custom legal terms, custom AI controls, flexible licensing, and flexible billing.

Frequently asked questions

How much does the full tool stack cost per month?

Approximately $50–$100/month depending on usage. ChatGPT Plus ($20), InVideo AI paid plan ($20–$30), HeyGen paid plan ($24–$48), Captions free tier or Pro ($10–$20), and Descript free or Basic ($12). Most have free tiers but limited exports.

Can I use free alternatives for any of these steps?

Yes. For script writing, use ChatGPT free tier (GPT-3.5). For video editing, DaVinci Resolve is free but manual. For avatars, try Synthesia free trial. For captions, free tools like Kapwing (limited). For audio, Audacity is free. However, the workflow speed and quality will drop significantly.

What is the biggest mistake people make with this workflow?

Skipping the script refinement step or using a raw blog post. Without adapting the text for spoken word (shorter sentences, conversational tone), the avatar and visuals feel unnatural. Always have ChatGPT rewrite for speech first.

How long does the entire process take for one video?

About 30–60 minutes for a 3–5 minute video after you have the blog post. Most time goes into script editing and manual tweaks in Descript. Automated steps (InVideo, HeyGen, Captions) take 5–10 minutes each.

Where should I start if I'm new to AI video creation?

Begin with just ChatGPT and InVideo AI to create a basic video without avatars. Once comfortable, add HeyGen for presenters, then Captions for polish, and finally Descript for audio perfection. This reduces complexity and cost upfront.