Show HN: Knowcast – A Simple AI Explanation Video Generator
Knowcast is an AI explainer video generator that turns any topic, article, or lesson into a visual explainer video. It features voice cloning, automatic scene generation, and captions, with pricing tiers for various creators. Ideal for YouTube, TikTok, online lessons, and product walkthroughs.
AI Explainer Video Generator
Turn any topic, article, or lesson into a visual explainer video.
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Beautiful, on-topic visuals
One prompt, full video
Short clips to deep dives
Explainer Video Maker
Visualize knowledge and information with explainer videos. Use infographics and visual storytelling to make ideas easy to understand.
Try It Out
See all examples
Voice Cloning
Clone your voice through a natural, conversational experience. Talk with AI once, then reuse your own voice across videos and narration.
Try It Out
AI
Read a short sample in your natural voice.
You
I want my explainer videos to sound like me, even when I publish every day.
AI
Great. I captured tone, pacing, and pauses.
Voice sample
24 seconds recorded
Ready
Original0:12
Cloned narration0:12
Upload
Clean sample
Train
Tone matched
Reuse
Video-ready
How Knowcast Works
Move from raw knowledge to a clear video narrative without starting in a blank editing timeline.
1
Start with a topic or prompt
Describe the idea you want to teach, summarize, or explain. Knowcast turns that input into a video-ready structure with a clear narrative.
2
Generate a visual story
Transform dense information into scenes, captions, infographics, and visual storytelling that make abstract ideas easier to understand.
3
Export a finished video
Review the generated scenes, captions, and pacing, then export a shareable explainer video for lessons, social clips, product explainers, and creator channels.
Use Cases
AI explainer videos work best when your audience needs a fast, visual way to understand an idea.
YouTube explainer videos
Create clear educational videos, history explainers, science breakdowns, and short documentary-style content from a single idea.
TikTok and social education
Turn complex topics into concise visual explanations for TikTok, Reels, Shorts, and other fast-moving social feeds.
Online lessons
Help students understand difficult subjects with simple scenes, guided narration, and infographic-led learning moments.
Product walkthroughs
Explain how a product, feature, or workflow works with visual steps that are easier to follow than a text-only guide.
Pricing
Start free, then upgrade when AI explainer video creation becomes part of your regular publishing workflow.
Free
$0/ month
For new creators exploring a first idea
Start free
Credits200/ month
Total video2 min
≈ 1TikTok
Basic preview workflow
Credits reset monthly
Voice clones
Remove watermark
Standard
$20$16/ month
For educators and short-form creators
Choose Standard
Credits2,000/ month
Total video30 min
≈ 15TikTok≈ 2YouTube
Videos under 10 minutes
1 voice clone
Edit videos
Remove watermark
Recommended
Pro
$60$48/ month
For YouTubers and course creators
Choose Pro
Credits6,500/ month
Total video100 min
≈ 50TikTok≈ 7YouTube
No video length limit
3 voice clones
Edit videos
Faster generation speed
Higher monthly credits
Max
$200$160/ month
For agencies and content teams
Choose Max
Credits22,000/ month
Total video350 min
≈ 175TikTok≈ 23YouTube
No video length limit
10 voice clones
Edit videos
Faster generation speed
Higher monthly credits
Enterprise
Custom plans for teams
Dedicated capacity, workflow support, and flexible video volume for growing teams.
Custom credits
Custom video length
Team workflow
CustomContact salesSales-assisted onboarding
Don't let your best ideas die in your head.
Turn a topic, lesson, or story into a clear video your audience can understand and share.
Start Creating
FAQ
Answers for creators, educators, and teams comparing AI explainer video tools.
What is an AI explainer video generator?+
An AI explainer video generator helps turn a topic, script, or prompt into a structured video with narration, visual scenes, captions, and simple storytelling. It is useful when you need to explain knowledge quickly without building every frame manually.
What can I make with Knowcast?+
You can create YouTube explainers, TikTok educational clips, online lesson videos, product walkthroughs, social content, and short visual summaries for complex topics.
What does Knowcast generate from my prompt?+
Knowcast generates a structured explainer video with visual scenes, captions, narrative flow, and export-ready output from your topic or script.
Do I need video editing experience?+
No. The landing workflow is designed around prompts, visual storytelling, and video-ready narration, so creators and educators can start from an idea rather than a timeline editor.
Is this only for education content?+
No. Education is a strong use case, but AI explainer videos also work for product tutorials, internal training, creator channels, marketing explainers, and social media content.