How long should YouTube Shorts be for the best performance?

The highest-retention Shorts are typically 30-45 seconds, not the maximum 60 seconds. Shorter videos that are watched completely outperform longer videos with drop-off. If you can make your point in 30 seconds, don't pad it to 55 seconds. The algorithm rewards completion rate, not duration.

Do YouTube Shorts help grow a channel?

Yes — Shorts are one of the most effective ways to grow a new YouTube channel because the algorithm actively distributes them to non-subscribers. However, Shorts subscribers don't always convert to long-form viewers, so the strategy is to use Shorts for reach and long-form videos for depth and revenue.

Can I use AI voiceover on YouTube Shorts?

Yes. AI voiceover is fully allowed on YouTube Shorts. Many of the most-viewed Shorts use AI-generated narration. The key is choosing a natural-sounding voice that fits your content — FluxNote offers 6 OpenAI voices plus ElevenLabs options on the Pro plan. Avoid voices that sound robotic or that speak too slowly for the fast pace Shorts requires.

How many YouTube Shorts should I post per day?

Most creators see the best results posting 1 Short per day, which gives the algorithm consistent content to distribute while giving each video enough time to find its audience before the next one competes with it. Posting more than 3 Shorts per day can cannibalize your own views. Quality and consistency matter more than raw posting volume.

Do YouTube Shorts have ads and earn money?

Yes, YouTube Shorts can earn money through the YouTube Partner Program. However, the RPM (revenue per thousand views) on Shorts is significantly lower than long-form videos — typically $0.03-$0.08 per 1,000 views vs $2-$15 for long-form. Most creators use Shorts primarily for channel growth and rely on long-form content for the bulk of their ad revenue.

Guide

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How to Make YouTube Shorts with AI (Complete Guide)

YouTube Shorts has become one of the fastest ways to grow a YouTube channel — the algorithm actively pushes Shorts to new audiences, and you don't need any prior subscribers to get views. With AI tools, you can produce a polished, captioned Short in under 10 minutes. Here's how to do it right.

Last updated: March 13, 2026

Step-by-Step Guide

Understand What Makes Shorts Perform

YouTube Shorts rewards content that viewers watch all the way through and then watch again. A 30-second Short with 95% retention will always outperform a 59-second Short with 60% retention. The algorithm also factors in shares and whether viewers navigate to your channel after watching. This means your Short needs to deliver complete value within its runtime — no padding, no slow intros, no dead space.

Write a Hook That Works in 3 Seconds

The first frame of your Short determines everything. On Shorts, viewers scroll past content in under a second if nothing grabs them. Effective Shorts hooks: a bold on-screen statement that creates curiosity ('This mistake costs most investors $10,000'), a direct promise ('Here are 3 signs your budget is broken'), or a visual that creates immediate intrigue. Write your hook before you write the rest of the script — it's the most important sentence in the entire video.

Write a Script Under 150 Words

A 60-second Short at a natural speaking pace fits approximately 130-150 words. The tightest-performing Shorts are often 30-45 seconds (80-100 words). Structure: hook (first 5-8 seconds), 2-3 key points or a single explained concept, brief call to action ('Follow for more'). Cut every word that isn't earning its place. Reading your script aloud and timing it is the best way to check pacing before generating the voiceover.

Generate Your Short in FluxNote

Paste your script into FluxNote and select 9:16 vertical format for Shorts. Choose a voice that matches the energy of your content — faster-paced content benefits from crisper voices like Alloy or Echo, while calmer educational content suits Nova or Fable. FluxNote will auto-match stock footage to your script sections and generate synced captions. Review the auto-selected footage — if a clip is off-topic, swap it before exporting.

Add Captions Optimized for Shorts

Captions on Shorts are viewed differently than on long-form videos. Shorts are often watched with sound on, but captions still increase retention because they reinforce the message. For Shorts, use bold animated or word-highlight caption styles positioned in the lower-center of the frame — this is the natural reading zone when someone is holding their phone vertically. Avoid placing captions too low where they'll be covered by the like/comment UI.

Upload and Optimize the Short

When uploading to YouTube, mark the video as a Short (it will be detected automatically if it's under 60 seconds and in 9:16 format). Write a title that starts with a keyword people would search — 'How to save money on groceries' rather than 'My best grocery tips.' Add a description with 2-3 sentences of context. Choose a relevant category. Unlike long-form videos, hashtags matter slightly more on Shorts — add 3-5 specific hashtags like #personalfinance or #moneytips.

Post Consistently and Analyze Performance

Shorts growth is a numbers game more than long-form YouTube. Posting 1 Short per day for 30 days will teach you more about what works for your specific audience than spending a month perfecting 4 videos. After 30 days, check YouTube Studio analytics: average view percentage, top-performing videos, and audience retention graphs. Double down on the content types and topic angles that showed higher completion rates and shares.

YouTube Shorts vs Long-Form Videos: Which Should You Prioritize?

Shorts and long-form videos serve different functions in a channel strategy, and the best creators use both intentionally.

Shorts are better for:

Growing a subscriber base quickly (the algorithm pushes Shorts to non-subscribers)
Testing content ideas before investing time in a full video
Staying top-of-mind with your existing audience between long videos
Reaching viewers who discover YouTube through the Shorts feed

Long-form is better for:

Ad revenue (RPM on Shorts is significantly lower than long-form)
Affiliate marketing (you have time to explain and recommend)
Building deep audience trust and authority
Evergreen search traffic

The recommended approach for most channels: post 3-5 Shorts per week to drive subscriber growth, and 1-2 long-form videos per week to build revenue. FluxNote handles both formats — 9:16 for Shorts, 16:9 for standard videos — so the same workflow applies to both.

Common Mistakes That Kill YouTube Shorts Performance

Understanding what not to do is as important as knowing the right approach.

Slow intros: Starting with 'Hey guys, welcome back to my channel' on a Short is instant death. The content starts at frame one.
Going over 60 seconds: YouTube stops treating your video as a Short if it exceeds 60 seconds. It then competes against long-form content with far less algorithm support for new channels.
No captions: Many Shorts viewers are in public spaces or using phones without headphones. If your Short requires sound to be understood, you're losing a significant portion of potential viewers.
Vague hooks: 'Here are some tips' is not a hook. 'This one habit adds $500/month to your savings' is a hook.
Ignoring loop optimization: If your Short's last few seconds flow naturally back into the first seconds, viewers who replay it (common with satisfying or useful content) count as extended watch time.

Pro Tips

Use vertical footage (or footage that crops well to vertical) — horizontal footage with black bars on a Short looks unprofessional and reduces watch time.
The best Shorts ideas often come from the comments on your own long-form videos — viewers literally tell you what follow-up questions they have.
Batch-create 7 Shorts in one session so you always have a week of content ready — planning and producing in bulk is far more efficient than daily creation.
End every Short with a micro call-to-action like 'follow for part 2' or 'comment your answer below' — engagement signals boost distribution.
Test the same topic as both a Short and a long-form video — if the Short performs well, you know there's search and browse demand for the full version.

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