Video Ad Specs Create platform-specific video ads 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 vertical video ad scene

infsh app run bytedance/seedance-1-5-pro --input '{ "prompt": "vertical video, person excitedly unboxing a product, clean modern room, bright natural lighting, social media ad style, authentic feeling, 9:16 format" }' Platform Specifications TikTok Spec Value Aspect ratio 9:16 (vertical) Resolution 1080 x 1920 px Duration 5-60 seconds (15-30s recommended) File size Max 500 MB Format MP4, MOV Sound On by default (design with sound) Text safe zone 150px from all edges Hook window 1 second — first frame must grab attention Instagram Reels Spec Value Aspect ratio 9:16 (vertical) Resolution 1080 x 1920 px Duration Up to 90 seconds (15-30s for ads) Cover image Separate upload, shows in grid Sound On by default Caption area Bottom 20% reserved for text overlay Instagram Stories Spec Value Aspect ratio 9:16 Resolution 1080 x 1920 px Duration Up to 15 seconds per segment Swipe-up/Link Available for ads Top/bottom 14% top and 20% bottom = unsafe for key content YouTube Format Aspect Duration Skip Bumper 16:9 6 seconds exactly Non-skippable Non-skippable 16:9 15 seconds Non-skippable Skippable (TrueView) 16:9 Any length Skip after 5 seconds Shorts 9:16 Up to 60 seconds N/A Resolution: 1920 x 1080 (16:9) or 1080 x 1920 (Shorts) Facebook Feed Spec Value Aspect ratio 1:1 (square) or 4:5 (recommended for mobile) Resolution 1080 x 1080 or 1080 x 1350 Duration Up to 240 min (15-30s recommended) Autoplay Silent — captions are essential Sound 85% of Facebook video is watched without sound LinkedIn Spec Value Aspect ratio 1:1 or 16:9 Resolution 1080 x 1080 or 1920 x 1080 Duration 3 seconds to 10 minutes (15-30s for ads) Tone Professional Autoplay Silent in feed AIDA Framework for Video Ads Phase Time Goal Technique Attention 0-3s Stop the scroll Pattern interrupt, bold visual, question Interest 3-10s Keep watching State the problem, show relevance Desire 10-20s Want the solution Show the product/outcome, social proof Action Final 3-5s Click/buy/sign up Clear CTA, urgency, offer Hook Techniques (First 3 Seconds) Technique Example Bold statement "This tool replaced my entire marketing team" Question "Why are you still doing this manually?" Surprising visual Unexpected transformation, before/after reveal Pattern interrupt Start mid-action, unusual angle, bright color Social proof "2 million people switched to this" Pain point "If you hate [common frustration], watch this" Creating Video Ads Vertical (TikTok, Reels, Stories, Shorts)

Hook scene (0-3s)

infsh app run google/veo-3-1-fast --input '{ "prompt": "vertical 9:16 video, close-up of hands struggling with tangled cables and messy desk, frustrated energy, shaky handheld camera, authentic social media style, bright lighting" }'

Solution reveal (3-15s)

infsh app run bytedance/seedance-1-5-pro --input '{ "prompt": "vertical video, smooth product reveal, clean wireless charging station on minimalist desk, satisfying organization transformation, bright modern room, social media ad aesthetic" }'

Add voiceover

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Stop wasting time with this mess. This one product changed my entire setup. Everything charges. Everything is organized. Link in bio." }'

Merge video + audio

infsh app run infsh/video-audio-merger --input '{ "video": "solution-reveal.mp4", "audio": "voiceover.mp3" }'

Add captions (critical for silent autoplay)

infsh app run infsh/caption-videos --input '{ "video": "ad-with-audio.mp4", "caption_file": "captions.srt" }' Square (Facebook, LinkedIn Feed) infsh app run google/veo-3-1-fast --input '{ "prompt": "square 1:1 video, professional person at desk discovering a new software tool, laptop screen showing clean dashboard, natural office lighting, corporate commercial style, satisfied expression" }' YouTube Bumper (6 Seconds)

6-second bumper: one message, one visual, one CTA

infsh app run google/veo-3-1-fast --input '{ "prompt": "6 second product ad, quick montage of a sleek app being used on phone, fast cuts, modern, energetic, brand logo reveal at end, punchy and dynamic, wide 16:9" }'

Keep it tight

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Your reports. Automated. Try DataFlow free." }' Captions Are Mandatory 85% of Facebook and 40%+ of Instagram video is watched on mute. Caption Best Practices Rule Reason Always add captions Silent viewing is the default on most platforms Large, readable font Small text is invisible on mobile High contrast White text with dark outline/background Centered or bottom-third Standard viewing position Max 2 lines at a time More text = can't be read fast enough Key words in bold/color Draws eye to important words

Generate captions from audio

(create SRT file from your script, then burn in)

infsh app run infsh/caption-videos --input '{ "video": "ad-video.mp4", "caption_file": "ad-captions.srt" }' Ad Structure Templates Testimonial Ad (15-30s) Time Content 0-3s Customer states the problem they had 3-15s How they discovered and tried the product 15-25s The specific result they achieved 25-30s Product name + CTA Demo Ad (15-30s) Time Content 0-3s The problem (text or visual) 3-20s Product demo showing the solution 20-25s Key result/benefit 25-30s CTA + offer Before/After Ad (15s) Time Content 0-3s "Before" state (messy, slow, frustrating) 3-5s Transition / product introduction 5-12s "After" state (clean, fast, satisfying) 12-15s CTA Common Mistakes Mistake Problem Fix No hook in first 1-3s Viewer scrolls past Open with pattern interrupt Landscape video on TikTok/Reels Letterboxed, looks amateur Use 9:16 for vertical platforms No captions Most viewers watch silent Always add captions CTA too late Viewers already left Clear CTA within last 5 seconds Too long for platform Forced skip or dropout Match platform duration norms Same ad for all platforms Wrong specs, wrong tone Create platform-specific versions Logo in first 3s Feels like a commercial, gets skipped Save branding for the end Text in unsafe zones Cut off by platform UI Check safe zone per platform Checklist Correct aspect ratio for target platform Hook in first 1-3 seconds Captions added (readable, high contrast) CTA clear and within final 5 seconds Duration matches platform norms Text outside platform unsafe zones Audio designed for both sound-on and sound-off Platform-specific version (not one-size-fits-all)