Time-sensitive content, last verified December 2025. Algorithm weights, length thresholds, and penalty figures below describe platform behavior as of that date, and platforms change these without notice. The structural advice (native style, early hook, captions, one CTA) ages well; the specific numbers do not. When a recommendation hinges on a specific number, check current official platform guidance with WebSearch first, and tell the user if it has changed.
TikTok (2025 algorithm updates)
Key changes
- Watch time now weighs 5x more than likes or comments
- 15-20 second engagement threshold replaced old 3-5 second hook metric
- Completion rates determine 74% of For You Page placements
- Videos 60-180 seconds achieve highest reach (2-3 min content drives 43.2% more views)
- Content under 30 seconds now faces algorithmic disadvantages
Optimal structure
- Hook in first 3 seconds (71% of viewers decide here)
- Target 75%+ completion rate
- Focus on watch time, not just likes
- Engagement velocity in first hour predicts viral potential
TikTok Shop affiliate scripts
- Hook: "I can't believe this [product] actually [result]!"
- Problem-solution narrative viewers relate to
- Strong CTA: "Check the link if you want to grab one!" or "Tap the product tag"
- Optimal length: 15-30 seconds for shop, 60-90 seconds for brand deals
- Post 5-10 high-quality videos daily for best results
Cross-platform warning
January 2025: Cross-posted content from other platforms penalized up to 40% in reach. Create TikTok-native content.
Instagram Reels (2025)
Key ranking factors
- Watch time: Primary factor
- Likes per reach: Engagement quality
- Shares per reach: Especially DM shares from non-followers
What gets pushed
- High saves, shares, comments
- Trending audio (doesn't need to be #1, but the audio should fit the Reel's vibe)
- Strong hooks with high-quality visuals
- Content understandable without additional context
Optimal length
- 30-90 seconds for engagement
- Reels up to 3 minutes supported, but shorter performs better
Spring 2025 update
3-second retention prioritized above all else. Your hook is the most important part.
Script adaptations for Reels
- Visual hook matters even more than on TikTok
- Slightly more polished aesthetic expected
- Captions essential (many watch without sound)
- Encourage DM shares for algorithmic boost
YouTube sponsorships
Placement options
| Placement | Best For | Tips |
|---|---|---|
| Pre-roll | Highest visibility | Can feel intrusive; keep brief |
| Mid-roll (30-90s) | Highest engagement, best conversions | Most organic feel |
| End-roll | Post-value CTAs | Lowest attention |
| Dedicated video | Deep dives | Charge 3-10x usual CPM |
Optimal integration
- Mid-roll placement for highest engagement and conversions
- 30-90 second integrations feel most natural
- Blend brand mentions into content naturally
- Focus on storytelling over selling
- 125-150 words = 1 minute of audio
- Keep scripts 500-800 words for longer integrations
Paddy Galloway's approach
- Spend more time on pre-production than filming
- Create "curiosity loops" throughout the video
- Focus on Audience Retention graphs
- The idea sets the ceiling, execution determines result
Cross-platform repurposing
The 2025 approach
- A single 60-minute piece can become 10-15 targeted short videos
- Tools: Opus Clip, Repurpose.io, Descript
- 39% of video marketers report short-form generates better ROI
Platform customization required
| Platform | Optimization |
|---|---|
| TikTok | Entertainment focus, trending sounds, native feel |
| Reels | Visually engaging, 30-90 seconds, aesthetic quality |
| YouTube Shorts | 15-30 seconds optimal, hook-driven |
| Professional development angle |
Key rule
Don't post the same clip across platforms. Each platform requires customization beyond aspect ratio changes.
85% of Facebook videos are watched without sound, so always add captions.
Platform-specific script templates
TikTok script (60 seconds)
[HOOK - 3s]
[Visual: product or transformation]
"[Hook line - pattern interrupt or curiosity]"
[PROBLEM - 7s]
[Visual: relatable situation]
"[Agitate the pain point with 'you' language]"
[SOLUTION - 10s]
[Visual: product demo]
"[Natural transition to product]"
[VALUE + PROOF - 20s]
[Visual: results or creator using it]
"[What makes it different + personal experience]"
[CTA - 5s]
[Visual: product + text overlay with CTA]
"[Clear call to action with code if applicable]"
YouTube integration (60-90 seconds)
[TRANSITION - 5s]
"Speaking of [topic from main video]..."
[PROBLEM + RELATABILITY - 15s]
"You know how [shared experience]? I dealt with this for [time]..."
[SOLUTION - 20s]
"That's why I've been using [brand]. What I love about it is [key benefit]..."
[DEMO/PROOF - 25s]
"Let me show you [demonstration or results]. After [timeframe], I noticed [specific result]..."
[CTA - 15s]
"If you want to try it, I've got a link in the description. Use code [X] for [discount]. Now back to [main content]..."
Length guidelines
| Platform | Optimal Length | Notes |
|---|---|---|
| TikTok | 60-180 seconds | Under 30s penalized in 2025 |
| TikTok Shop | 15-30 seconds | Quick hit product demos |
| Reels | 30-90 seconds | Sweet spot for engagement |
| YouTube Shorts | 15-30 seconds | Highly hook-dependent |
| YouTube Integration | 30-90 seconds | Mid-roll placement |
| YouTube Dedicated | 2-10+ minutes | Full storytelling format |
Platform-specific mistakes to avoid
TikTok
- ❌ Cross-posting from other platforms (40% reach penalty)
- ❌ Videos under 30 seconds (algorithmic disadvantage)
- ❌ Over-polished content (feels inauthentic)
- ❌ Ignoring completion rate metrics
Reels
- ❌ No captions (85% watch without sound)
- ❌ Weak visual hook (3-second retention is key)
- ❌ Content that needs context to understand
- ❌ Ignoring share metrics
YouTube
- ❌ Jarring sponsor transitions
- ❌ Reading obviously scripted copy
- ❌ Placing ads at the very start
- ❌ Not mentioning the sponsor naturally