Get your AI video ready,
then post it the right way
You will pick a ratio for the platform, add captions, copy a post caption with hashtags, and turn on the AI label before you post.
Written by the Inflyu team
Lesson 7. After it you can: You will pick a ratio for the platform, add captions, copy a post caption with hashtags, and turn on the AI label before you post.
The steps
Step 1
Pick the ratio for where you post
As general guidance, 9:16 fits full-screen vertical feeds such as Instagram Reels, TikTok and YouTube Shorts, and 1:1 or 4:5 fit the Instagram feed. Platforms change their rules, so check the one you post on. Reel Studio offers 9:16, 1:1, 4:5, 16:9 or Original.
Step 2
Open Reel Studio and add your clips
Go to Reel Studio and add the clips you already made. Pick a length (15 s, 30 s, 60 s or 90 s) and a style (Auto, Hype, Story or Aesthetic). A reel costs from 9 credits, rising with the length of your footage, and the price shows before you start.
Step 3
Choose the captions
Open "Change the look" and use the caption styles: Clean, Bold pop or Word by word. Captions let a viewer follow the first seconds without sound. For a clip that already exists, the Auto captions tool writes the speech out and burns it in, for clips up to 120 s.
Step 4
Copy the post caption and hashtags
When the plan writes a post caption and hashtags, they show under the finished reel with a Copy button. Press it, paste into the app you post from, and edit the words so they sound like you.
Step 5
Turn on the AI label before you post
Our guide on the Instagram AI-generated profile label says: since 2026-08-31 Instagram asks accounts that feature an AI-generated person to turn on the AI-generated profile label. It is a profile setting, not a per-post one. Open your profile, tap Edit profile, turn on AI-generated profile, and keep #aigenerated in your captions. On TikTok, turn on the AI-generated content setting in each post. Labels change, so check the platform's current settings screen.
Step 6
Download and post
Posting costs Inflyu nothing. A free account's reel plays with the Inflyu mark and downloads after any credit pack. Scheduling posts is not part of a free account either. Read the platform's own screen for the final steps, and check the result looks right on your phone before you post.
Common mistakes
- Posting a wide 16:9 video to a vertical feed. Pick 9:16 before you render, or use 1:1 or 4:5 for the Instagram feed.
- Choosing a ratio without checking where the video will be seen. Decide the platform first, then the ratio.
- Skipping captions on a clip with speech. Add them, then check the first line on your phone.
- Pasting the post caption unchanged. Read it once and change the lines that do not sound like you.
- Forgetting the label. If your video or profile features an AI-generated person, turn the label on before you post.
Limits to know
- Reel Studio lengths are 15 s, 30 s, 60 s or 90 s, and the ratios are 9:16, 1:1, 4:5, 16:9 or Original.
- A free account can add up to 5 minutes of footage per reel and make 2 renders per reel. Its reel carries the Inflyu mark and downloads after any credit pack.
- Scheduling posts is not available on a free account.
- Auto captions works on clips up to 120 s.
- Ratios and labels are general guidance. Each platform sets its own rules and can change them.
What it costs
| Action | Cost |
|---|---|
| Reel Studio reel, from | 9 credits |
| Auto captions, up to 60 s | 2 credits |
| Auto captions, up to 120 s | 3 credits |
| Posting to a platform | Costs Inflyu nothing |
| Free account | Verify your email to use them. Google sign-in doesn't count. |
What you will learn
You will pick a ratio for the platform, add captions, copy a post caption with hashtags, and turn on the AI label before you post.
Pick a ratio for each platform and know where Reel Studio lets you set it.
Add captions and copy the post caption and hashtags the plan writes for you.
Turn on the AI label on Instagram and the matching setting on TikTok before you post.
The steps
Each step is written out in full above, with the result to expect.
Pick the ratio for where you post
As general guidance, 9:16 fits full-screen vertical feeds such as Instagram Reels, TikTok and YouTube Shorts, and 1:1 or 4:5 fit the Instagram feed. Platforms change their rules, so check the one you post on. Reel Studio offers 9:16, 1:1, 4:5, 16:9 or Original.
Open Reel Studio and add your clips
Go to Reel Studio and add the clips you already made. Pick a length (15 s, 30 s, 60 s or 90 s) and a style (Auto, Hype, Story or Aesthetic). A reel costs from 9 credits, rising with the length of your footage, and the price shows before you start.
Choose the captions
Open "Change the look" and use the caption styles: Clean, Bold pop or Word by word. Captions let a viewer follow the first seconds without sound. For a clip that already exists, the Auto captions tool writes the speech out and burns it in, for clips up to 120 s.
Copy the post caption and hashtags
When the plan writes a post caption and hashtags, they show under the finished reel with a Copy button. Press it, paste into the app you post from, and edit the words so they sound like you.
Turn on the AI label before you post
Our guide on the Instagram AI-generated profile label says: since 2026-08-31 Instagram asks accounts that feature an AI-generated person to turn on the AI-generated profile label. It is a profile setting, not a per-post one. Open your profile, tap Edit profile, turn on AI-generated profile, and keep #aigenerated in your captions. On TikTok, turn on the AI-generated content setting in each post. Labels change, so check the platform's current settings screen.
Download and post
Posting costs Inflyu nothing. A free account's reel plays with the Inflyu mark and downloads after any credit pack. Scheduling posts is not part of a free account either. Read the platform's own screen for the final steps, and check the result looks right on your phone before you post.
Homework: Post one of your own results
Pick one result you made in an earlier lesson, choose the ratio that fits the platform, add a caption you wrote, and post it. Turn on the AI label if it features an AI-generated person.
No credits
Optional: make a reel from your clips in Reel Studio, pick a caption style, and copy the post caption the plan writes.
Your creditsFrom 9 credits, and the price shows before you start. Spending credits needs a verified email. A free account's reel carries the Inflyu mark and downloads after any credit pack.
Check yourself: Your post fills the screen on your phone, the first caption line is readable with the sound off, and the AI label is on if a person in the video is AI-generated.
Publish like a pro: questions
What aspect ratio should I use for Instagram Reels, TikTok and YouTube Shorts?+
As general guidance, 9:16 fills a vertical full-screen feed. For the Instagram feed, 1:1 or 4:5 are common. Platforms change their rules, so check the one you post on.
How do I turn on the Instagram AI label?+
Open your profile, tap Edit profile and turn on AI-generated profile. It is a profile setting, not a per-post one, and #aigenerated in your captions is a separate help for viewers. Labels change, so check the current settings screen.
Do I need to label AI video on TikTok?+
Our guide says TikTok has an AI-generated content setting in each post, and that TikTok labels uploads that carry Content Credentials. Check the post settings screen in the app for the current wording.
Does Inflyu write the post caption for me?+
Reel Studio can write a post caption and hashtags with the plan. They show under the finished reel with a Copy button. Edit them before you post.
Can I schedule posts from a free account?+
No. Scheduling is not part of a free account. You can download after any credit pack and post yourself.
Do I need a subscription?+
No. You can pay as you go: credit packs are one-time purchases and their credits never expire. If you would rather have a steady supply, the monthly Starter, Creator, Pro and Brand plans refill your credits each month, and you can cancel anytime. Unused monthly credits do not roll over.
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