Agent skill

viral-video-long-form

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/viral-video-long-form

SKILL.md

CRITICAL GUIDELINES

Windows File Path Requirements

MANDATORY: Always Use Backslashes on Windows for File Paths

When using Edit or Write tools on Windows, you MUST use backslashes (\) in file paths, NOT forward slashes (/).


Long-Form Video Mastery (2025-2026)

Complete guide to creating viral long-form content primarily for YouTube, with strategies for watch time optimization, SEO, thumbnails, and audience building.

YouTube Long-Form Overview

Why Long-Form Matters in 2025

  • YouTube is the most-watched streaming service on TVs in US (surpassing Netflix)
  • 1 billion hours of video watched daily
  • Connected TV driving long-form growth
  • MrBeast reports stronger CTV performance
  • Long-form + Shorts combo = 41% faster channel growth

Optimal Video Lengths

Duration Performance Best For Notes
7-15 minutes Sweet spot Most content Ideal for tutorials, reviews
8-9 minutes Best for search SEO-focused Consistently performs best in rankings
8+ minutes More ads Monetization Enables mid-roll placements
10-30 minutes Effective range In-depth topics Documentary, education
40+ minutes Extended content Deep dives Podcast, interviews

Technical Specifications

Specification Recommended
Aspect ratio 16:9
Resolution 1920x1080 (1080p) or 3840x2160 (4K)
Frame rate 24, 30, or 60 fps
File format MP4 (H.264/H.265)
Audio AAC, 48kHz, stereo or higher

YouTube Algorithm Deep Dive

Primary Algorithm Signals

Signal Weight What It Measures
Watch time Highest Total minutes watched
Audience retention Very High Percentage of video watched
Click-through rate (CTR) Very High Clicks / Impressions
Session time High Time viewer spends on YouTube after
Engagement Medium Likes, comments, shares, saves

How the Algorithm Works

Discovery Phase:

  1. Video shown to subscribers
  2. Performance measured against baseline
  3. Strong performance triggers broader distribution
  4. Weak performance limits reach

Recommendation Phase:

  • Videos are recommended based on viewer behavior patterns
  • Similar content to what viewer has watched
  • Topics viewer has shown interest in
  • Creator quality signals

Algorithm Optimization Strategies

Maximize Watch Time:

  • Front-load value (but tease more)
  • Eliminate dead time and filler
  • Use pattern interrupts every 30-60 seconds
  • Add chapters for navigation

Optimize CTR:

  • A/B test thumbnails (Test & Compare feature)
  • Use emotional faces (20-30% CTR boost)
  • Keep title text under 60 characters
  • Create curiosity without clickbait

Increase Session Time:

  • End screens with relevant videos
  • Playlist optimization
  • Create content series
  • Strategic card placements

The 5-10 Second Hook (Long-Form)

Long-Form Hook Differences

Unlike short-form's 1.3-second rule, long-form allows 5-10 seconds for hooks, but the principles remain:

Hook Components:

  1. Pattern Interrupt (0-2 seconds): Stop the scroll
  2. Promise (2-5 seconds): What viewer will get
  3. Proof/Preview (5-10 seconds): Why to trust you

Long-Form Hook Templates

Preview Hook: "In this video, I'm going to show you [result]. By the end, you'll know [specific outcome]."

Curiosity Hook: "What I'm about to share changed everything I thought I knew about [topic]..."

Result Hook: [Show the end result] "This is what we're building today, and I'll show you exactly how."

Story Hook: "Three months ago, I made a mistake that cost me [consequence]. Here's what I learned..."

Problem Hook: "If you've ever struggled with [problem], you're not alone. Here's what actually works."

Hook Mistakes to Avoid

  • "Hey guys, welcome back to my channel..."
  • Long intro animations
  • Asking for likes/subscribes before value
  • Generic greetings
  • Explaining what you won't cover

Thumbnail Mastery

Thumbnail Statistics

Metric Impact
Videos with custom thumbnails 90% of top performers
CTR with custom thumbnails 60-70% higher
CTR with emotional faces 20-30% higher
High contrast visibility 20-30% increase

Thumbnail Design Principles

Face and Emotion:

  • Faces with strong emotion perform best
  • Eye contact draws attention
  • Expressions should be genuine, not forced
  • Match emotion to content tone

Text Optimization:

  • Maximum 5 words
  • 30pt+ font for mobile readability
  • Sans-serif fonts work best
  • High contrast against background

Color Strategy:

Color Psychology Use For
Red/Orange Urgency, excitement Action, entertainment
Blue Trust, calm Educational, tech
Yellow Attention, optimism Happy content, tips
Green Growth, money Finance, health

Composition:

  • Rule of thirds
  • Clean backgrounds
  • Single focal point
  • Negative space for text

YouTube Thumbnail Features (2025)

  • File size limit: Increased to 50MB
  • Test & Compare: Up to 3 thumbnail variants
  • A/B testing: Native platform feature
  • Preview: Always test at 320px width (mobile)

Thumbnail Testing Strategy

  1. Create 3 distinctly different thumbnails
  2. Use Test & Compare feature
  3. Run test for at least 7 days
  4. Measure by CTR improvement
  5. Apply learnings to future videos

SEO and Discovery

Video SEO Statistics

Statistic Value
Google searches with video snippets 25%+
Top-ranking videos average age 29 months
Top-ranking videos with captions 94%
View boost from Google ranking 2-5x
Best performing length in search 8-9 minutes

Title Optimization

Best Practices:

  • Primary keyword in first 60 characters
  • Keep under 60 characters total (visible in search)
  • Include year for time-sensitive content
  • Balance keywords with curiosity

Title Formula: [Keyword] + [Benefit/Result] + [Specificity]

Examples:

  • "Python Tutorial for Beginners - Learn Python in 1 Hour"
  • "How to Lose 10 Pounds in 30 Days (Science-Based Method)"
  • "iPhone 16 Review: 3 Months Later - Worth It?"

Description Optimization

Structure:

[Hook - First 2-3 lines visible without expansion]
Primary keyword in first 25 words
Clear value proposition

[Body - 150-250 words total]
Semantic keywords naturally included
Timestamps/chapters
Resource links

[Footer]
Social links
CTA
Related video links

Key Guidelines:

  • First 2-3 lines most important (visible in search)
  • Primary keyword in first 25 words
  • 150-250 words total for best SEO
  • Unique description for each video
  • Max 15 hashtags (only 3 displayed)

Tags and Keywords

Tag Strategy:

  • Primary keyword as first tag
  • Include variations and synonyms
  • Mix broad and specific
  • Don't exceed 500 characters total
  • Not as important as title/description but still useful

Keyword Research:

  • Use YouTube search autocomplete
  • Analyze competitor tags (TubeBuddy, VidIQ)
  • Google Trends for topic validation
  • Check search volume vs competition

Audience Retention Optimization

Retention Benchmarks

Metric Value Impact
2025 average retention 23.7% Baseline
Videos surpassing 50% 16.8% Above average
Videos reaching final 10 seconds 16% Excellent
70%+ retention in first 30 seconds Much higher ranking Critical

Retention Impact Formula

10% retention improvement = 25%+ impression increase

Retention Killers

Eliminate These:

  • Slow intros (33%+ drop in first 30 seconds)
  • "Hey guys, welcome back" openings
  • Long sponsor segments
  • Repetitive subscribe reminders
  • Product promotions that break flow
  • Off-topic tangents
  • Unnecessary filler content
  • AI narration (35% drop vs human voice)

Retention Boosters

Pattern Interrupts (Every 30-60 seconds):

  • Camera angle changes
  • B-roll footage
  • Graphics and animations
  • Audio energy changes
  • New information introduction

Structural Elements:

  • Video chapters for navigation
  • Preview upcoming content
  • Create mini-cliffhangers within video
  • Open and close story loops

Visual Variety:

  • Multiple shooting locations
  • Screen recordings/demonstrations
  • Lower thirds and text overlays
  • Transitions between segments

Chapter/Timestamp Strategy

Why Chapters Matter:

  • Improve user experience
  • Prevent abandonment
  • Enable quick navigation
  • Show up in Google search

Format:

0:00 Introduction
1:23 Chapter Title
4:56 Another Chapter
...

Best Practices:

  • First timestamp must be 0:00
  • At least 3 chapters minimum
  • Keep chapter titles descriptive
  • Natural break points in content

Watch Time Maximization

Why Watch Time is King

Watch time is the single most important metric for YouTube long-form success. It determines:

  • Search rankings
  • Recommended video placement
  • Channel authority
  • Monetization potential

Watch Time Strategies

Content Structure:

  1. Hook (0-10 seconds)
  2. Promise/Agenda (10-30 seconds)
  3. Value delivery (bulk of video)
  4. Pattern interrupts throughout
  5. Payoff/Summary (end)
  6. CTA and next video (final 30 seconds)

Pacing Guidelines:

  • Vary energy levels throughout
  • Build-up and payoff cycles
  • Strategic pauses for emphasis
  • No more than 2-3 minutes on single point

Series and Playlists:

  • Create content series
  • Build episode anticipation
  • Use playlists strategically
  • End with teaser for next video

Shorts + Long-Form Strategy

The Growth Multiplier

Shorts + Long-form = 41% faster channel growth

How to Use Shorts for Long-Form

Teaser Strategy:

  • Create Shorts from best moments
  • Tease upcoming long-form content
  • "Full video on my channel" CTA
  • Use Shorts to test topics

Audience Building:

  • Shorts identify resonant audiences
  • Algorithm recommends long-form to Shorts viewers
  • Build subscriber base with Shorts
  • Convert Shorts viewers to long-form watchers

Content Repurposing:

  • Extract 3-5 Shorts from each long-form
  • Highlight best hooks and moments
  • Create standalone value in Shorts
  • Cross-promote naturally

Monetization Optimization

Ad Placement Strategy

8+ Minute Requirement:

  • Videos over 8 minutes enable mid-roll ads
  • More ad placements = higher revenue potential
  • Don't sacrifice quality for length

Strategic Ad Placement:

  • Place ads at natural break points
  • Avoid ads during key content
  • Consider viewer experience
  • Test different placements

Revenue Diversification

Revenue Stream Description
AdSense Display and video ads
Sponsorships Brand partnerships
Memberships Channel memberships
Super Chat Live stream donations
Merchandise YouTube merch shelf
Affiliate Product recommendations

Connected TV Optimization

CTV Growth in 2025

  • YouTube is most-watched streaming service on TVs
  • Long-form performs exceptionally well on CTV
  • Different viewing behavior than mobile
  • Longer session times

CTV-Specific Strategies

Visual Considerations:

  • Higher production value expected
  • Larger text and graphics
  • Consider 4K resolution
  • Cinematic aspect ratios

Content Considerations:

  • Longer content performs well
  • Lean-back viewing experience
  • Series and episodic content
  • Documentary-style formats

Technical Optimization:

  • Upload in highest quality possible
  • Use appropriate chapters for TV navigation
  • Consider HDR for supported content
  • Optimize audio for speaker systems

Analytics and Metrics

Key Performance Indicators

Metric Target Why It Matters
Average view duration 50%+ of video Watch time signal
CTR 4-10%+ Thumbnail/title effectiveness
Average % viewed 40%+ Retention quality
Unique viewers Growth trend Audience expansion
Subscribers from video Positive Content resonance

Analytics Interpretation

High CTR, Low Retention:

  • Thumbnail/title overselling
  • Content not matching expectation
  • Hook not delivering promise

Low CTR, High Retention:

  • Great content, weak packaging
  • Thumbnail/title needs improvement
  • Hidden gem potential

High Retention, Low Views:

  • Distribution/SEO issue
  • Topic too niche
  • Promotion needed

Retention Graph Analysis

Common Patterns:

  • Cliff drop at start: Hook failing
  • Gradual decline: Normal, but optimize
  • Sharp drops: Identify and fix those moments
  • Spikes: People rewatching or chapter jumping
  • End retention: Indicator of content quality

Production Quality Guidelines

Equipment Recommendations

Category Budget Mid-Range Professional
Camera Smartphone Mirrorless Cinema camera
Audio Lavalier mic Shotgun mic Multi-mic setup
Lighting Ring light Softbox kit Professional lights
Background Clean wall Simple set Full studio

Audio Priority

Audio quality matters more than video quality.

Requirements:

  • Clear, crisp voice
  • Minimal background noise
  • Consistent levels
  • Room treatment if needed

Video Quality Standards

Minimum:

  • 1080p resolution
  • Stable footage (tripod/stabilization)
  • Good lighting on subject
  • Clean audio

Recommended:

  • 4K for future-proofing
  • Multiple camera angles
  • Professional color grading
  • B-roll footage

Quick Reference Checklist

Pre-Production

  • Keyword research completed
  • Script/outline prepared
  • Thumbnail concept ready
  • Equipment tested

Production

  • Audio quality verified
  • Lighting consistent
  • Multiple angles captured
  • B-roll footage recorded

Post-Production

  • Hook optimized (first 10 seconds)
  • Retention killers removed
  • Pattern interrupts added
  • Chapters/timestamps created
  • End screen added
  • Closed captions uploaded

Publishing

  • Title optimized (60 characters, keyword-rich)
  • Description optimized (150-250 words)
  • Tags added (primary keyword first)
  • Thumbnail uploaded and tested
  • Category and language set
  • Cards added at strategic points
  • Playlist assignment

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