Explainer Video Guide Create explainer videos from script to final cut via inference.sh CLI. Quick Start Requires inference.sh CLI ( infsh ). Get installation instructions: npx skills add inference-sh/skills@agent-tools infsh login
Generate a scene for an explainer
infsh app run google/veo-3-1-fast --input '{ "prompt": "Clean motion graphics style animation, abstract data flowing between connected nodes, blue and white color scheme, professional corporate aesthetic, smooth transitions" }' Script Formulas Problem-Agitate-Solve (PAS) — 60 seconds Section Duration Content Word Count Problem 10s State the pain point the viewer has ~25 words Agitate 10s Show why it's worse than they think ~25 words Solution 15s Introduce your product/idea ~35 words How It Works 20s Show 3 key steps or features ~50 words CTA 5s One clear next action ~12 words Before-After-Bridge (BAB) — 90 seconds Section Duration Content Before 15s Show the current frustrating state After 15s Show the ideal outcome Bridge 40s Explain how your product gets them there Social Proof 10s Quick stat or testimonial CTA 10s Clear next step Feature Spotlight — 30 seconds (social) Section Duration Content Hook 3s Surprising fact or question Feature 15s Show one feature solving one problem Result 7s The outcome/benefit CTA 5s Try it / Learn more Pacing Rules Content Type Words Per Minute Notes Standard narration 150 wpm Conversational pace Complex/technical 120 wpm Allow processing time Energetic/social 170 wpm Faster for short-form Children's content 100 wpm Clear and slow Key rule: 1 scene per key message. Don't pack multiple ideas into one visual. Scene Duration Guidelines Establishing shot: 3-5 seconds Feature demonstration: 5-8 seconds Text/stat on screen: 3-4 seconds (must be readable) Transition: 0.5-1 second CTA screen: 3-5 seconds Visual Production Scene Types
Product in context
infsh app run google/veo-3-1-fast --input '{ "prompt": "Clean product demonstration video, hands typing on a laptop showing a dashboard interface, bright modern office, soft natural lighting, professional" }'
Abstract concept visualization
infsh app run bytedance/seedance-1-5-pro --input '{ "prompt": "Abstract motion graphics, colorful data streams connecting floating geometric shapes, smooth fluid animation, dark background with glowing elements, tech aesthetic" }'
Lifestyle/outcome shot
infsh app run google/veo-3-1-fast --input '{ "prompt": "Happy person relaxing on couch with laptop, smiling at screen, bright airy living room, warm afternoon light, satisfied customer feeling, lifestyle commercial style" }'
Before/after comparison
infsh app run falai/flux-dev-lora --input '{ "prompt": "Split screen comparison, left side cluttered messy desk with papers and stress, right side clean organized minimalist workspace, dramatic difference, clean design" }' Image-to-Video for Scenes
Generate a still frame first
infsh app run falai/flux-dev-lora --input '{ "prompt": "Professional workspace with glowing holographic interface, futuristic but clean, blue accent lighting" }'
Animate it
infsh app run falai/wan-2-5-i2v --input '{ "prompt": "Gentle camera push in, holographic elements subtly floating and rotating, soft ambient light shifts", "image": "path/to/workspace-still.png" }' Voiceover Production Script Writing Tips Short sentences. Max 15 words per sentence. Active voice. "You can track your data" not "Your data can be tracked." Conversational tone. Read it aloud — if it sounds stiff, rewrite. One idea per sentence. One sentence per visual beat. Generating Voiceover
Professional narration with Dia TTS
infsh app run falai/dia-tts --input '{ "prompt": "[S1] Tired of spending hours on reports that nobody reads? There is a better way. Meet DataFlow. It turns your raw data into visual stories... in seconds. Just connect your source, pick a template, and share. Try DataFlow free today." }' Pacing Control in TTS Technique Effect Example Period . Medium pause "This changes everything. Here's how." Ellipsis ... Long pause (dramatic) "And the result... was incredible." Comma , Short pause "Fast, simple, powerful." Exclamation ! Emphasis/energy "Start building today!" Question ? Rising intonation "What if there was a better way?" Music & Audio Background Music Guidelines Volume: 20-30% under narration (duck 6-12dB when voice plays) Style: match the brand tone (corporate = ambient electronic, startup = upbeat indie) Structure: intro swell (first 3s) -> subtle loop under narration -> swell at CTA No vocals: instrumental only under narration
Generate background music
infsh app run < music-gen-app
--input '{ "prompt": "upbeat corporate background music, modern electronic, 90 BPM, positive and professional, no vocals, suitable for product explainer video" }' Assembly Pipeline Full Production Workflow
1. Generate voiceover
infsh app run falai/dia-tts --input '{ "prompt": "[S1] Your script here..." }'
2. Generate scene visuals (in parallel)
infsh app run google/veo-3-1-fast --input '{"prompt": "scene 1 description"}' --no-wait infsh app run google/veo-3-1-fast --input '{"prompt": "scene 2 description"}' --no-wait infsh app run google/veo-3-1-fast --input '{"prompt": "scene 3 description"}' --no-wait
3. Merge scenes into sequence
infsh app run infsh/media-merger --input '{ "media": ["scene1.mp4", "scene2.mp4", "scene3.mp4"] }'
4. Add voiceover to video
infsh app run infsh/video-audio-merger --input '{ "video": "merged-scenes.mp4", "audio": "voiceover.mp3" }'
5. Add captions
infsh app run infsh/caption-videos --input '{ "video": "final-with-audio.mp4", "caption_file": "captions.srt" }' Video Length by Format Format Length Platform Social teaser 15-30s TikTok, Instagram Reels, YouTube Shorts Product demo 60-90s Website, landing page Feature explainer 90-120s YouTube, email Tutorial/walkthrough 2-5min YouTube, help center Investor pitch video 2-3min Pitch deck supplement Transition Types Transition When to Use Effect Cut Default between related scenes Clean, professional Dissolve/Crossfade Time passing, mood shift Soft, contemplative Wipe New topic or section Clear separation Zoom/Push Drilling into detail Focus attention Match cut Visual similarity between scenes Clever, memorable Common Mistakes Mistake Problem Fix Script too wordy Voiceover rushed, viewer overwhelmed Cut to 150 wpm max No hook in first 3s Viewers leave immediately Start with the problem or surprising stat Visuals lag narration Confusing disconnect Visuals should match or slightly precede words Background music too loud Can't hear narration Duck music 6-12dB under voice No captions 85% of social video watched silent Always add captions Too many ideas Viewer retains nothing One core message per video