If you are starting with an idea, product link, image, or short script, use an AI video for TikTok as a drafting goal, not a performance promise. Plan one clear vertical story and build the first seconds around the viewer's question. Keep captions away from interface-covered edges, then review the exported file in the destination app. Use Pippit's AI Video Generator to turn prepared inputs into a draft you can preview, edit, and export. It does not remove the need for a human check before publishing.
Use 9:16 as the shared starting point for TikTok and Instagram Reels. If you use AI videos for TikTok, treat the current platform preview and help page as the final authority. Rules are not identical, and they change. The checklist below is designed to answer one question: is this draft ready for a person to inspect and publish?
Start with one promise the opening can show
AI videos for TikTok are most useful here as a first-draft workflow. The opening still needs a human decision.
Write the opening before you write the rest of the video. In the first beat, the viewer should understand the subject and why the next few seconds matter. That can be a problem, a demonstration, a transformation of information, or a specific question. It does not need to make a performance promise.
For a simple 15-second explainer, use this sequence:
Keep the example to one idea. A draft that tries to introduce a product, tell a story, prove a claim, and ask for a sale in its first seconds is difficult to review. If you need a more deliberate prompt, use the five-part AI video prompt worksheet. Use it before opening the generator.
Choose the vertical canvas before you draft scenes
For an AI video generator for social media, set the destination before you set the scene. That order keeps the crop decision visible.
Set the destination first, then plan the frame. A 9:16 canvas gives the subject room to read on a phone and is the safest shared default for TikTok and Reels. Put the main action near the middle, leave breathing room around it, and avoid placing essential text at the extreme top or bottom.
For an AI video for TikTok, confirm the destination before you lock the crop or caption position.
Platform requirements change. Check the official pages again before publishing a time-sensitive asset:
- TikTok's in-feed auction ad specification lists vertical 9:16 as the recommended format and gives a minimum vertical size of 540 × 960 pixels. It also says the safe zone depends on the dimensions, caption length, and added formats.
- TikTok's creative quality checklist asks creators to check full-screen 9:16 framing, resolution, safe zones, clear messaging, and audible sound. Those are production checks, not a promise of reach.
- Instagram Help says a Reel upload can use an aspect ratio from 1.91:1 to 9:16. It also lists at least 30 FPS and 720-pixel resolution.
- Meta's Reels advertising guidance recommends 9:16 creative with audio and key elements in the safe zone. This is advertising guidance, not an organic-performance promise.
The 9:16 exception is a destination decision
Do not force every source into 9:16 without looking at the crop. If the only authorized source is horizontal, Instagram's stated upload range allows a wider ratio, but the result may not fill a phone screen. Use that exception only when:
- 1
- Instagram is the confirmed destination. 2
- The subject remains large enough to understand after export. 3
- You have checked the actual preview for empty margins, cropped faces, and covered text. 4
- You are not presenting the same file as a finished shared TikTok/Reels asset without a separate TikTok check.
For one file intended for both platforms, return to 9:16 unless the crop destroys the information the video must convey.
Keep captions inside a conservative safe area
An AI video generator for social media can place captions quickly, but it cannot decide whether an app overlay will cover a critical word. Keep that decision in the review pass.
Treat the safe area as a design boundary, not a thin line. Interface elements, captions, buttons, profile information, and calls to action can overlap the edges of a vertical video. The exact overlay depends on the app, placement, caption length, and current interface, so do not rely on a single universal pixel measurement.
Use this practical layout rule:
- Keep the hook, product name, key number, and final instruction in the central area.
- Leave extra space at the top and bottom for platform UI and at the lower edge for captions or buttons.
- Use short caption lines with strong contrast. Do not make a viewer read a paragraph while the scene changes.
- Check text over both light and dark frames. A safe position is still a poor position if the words disappear into the background.
- If the platform adds captions or labels, compare them with your own text so the two layers do not compete.
The useful test is not whether the caption fits in the editor. Check the destination preview. If a viewer cannot read it without pausing, move or shorten the line.
Review an AI video for TikTok in the destination preview, because the editor cannot show every interface overlay.
Build the draft in Pippit, then review it as a platform asset
Use an AI video generator for social media to shorten the distance between a prepared brief and a reviewable draft. The destination check still happens after export.
Check the source and permissions before opening the tool. Use an authorized link when the page holds the approved facts. Choose approved images for tighter visual control, or use a concise script when the message is settled. Use the input guide to choose a starting point. For product-proof planning, read the e-commerce video guide.
Open the AI Video Generator, add the prepared text, link, or media, and shape the script before generation. Choose the available aspect ratio and duration in the settings rather than hiding them inside the prompt. Preview the draft, revise captions, voice, visuals, or timing where needed, and export only after the content passes the checks below.
Keep your brief small enough to inspect. One opening, one main action, one supporting visual sequence, and one next step are easier to validate than a compressed full campaign. If the draft contains a claim, label, price, testimonial, or named person, compare it with an authorized source before you publish.
Keep the AI video for TikTok brief focused on one message and one observable next step.
Run the vertical-video publish checklist
The final AI video generator for social media check is simple: can the intended viewer understand, read, hear, and verify the draft in the destination preview?
Use this checklist after export and again in the actual platform preview:
Treat the AI video for TikTok as a platform asset only after the full checklist passes.
Do the last pass manually. Watch once with sound, once without sound, and once while checking the opening and final seconds. Read every caption rather than assuming the generated transcript is correct. A technically valid file can still be confusing, misleading, or unusable when its text and visuals disagree.
Publish only after a human check
An AI video generator for social media can organize a draft, but the publish decision belongs to a person who can verify the source and the final file.
An AI video generator can speed up the first draft, but the publishing decision remains human. Verify the source rights, factual claims, names, labels, pronunciation, captions, audio license, disclosure requirements, and destination preview. Remove any generated detail that was not in the approved brief.
Do not use "viral," "guaranteed reach," or "will convert" as a quality test. A good result is easy to understand. Viewers should follow the opening, read the captions, and see the next step without app controls covering key information.
Frequently asked questions
What aspect ratio should I use for TikTok and Instagram Reels?
When using an AI video generator for social media, use 9:16 as the shared default. Instagram Help currently allows Reels from 1.91:1 to 9:16, but a wider exception needs its own crop and preview check. TikTok's in-feed ad guidance recommends 9:16 for vertical creative.
A TikTok-ready AI video still needs a destination preview and a human publishing decision.
Can I use a horizontal video for Instagram Reels?
Instagram's stated upload range includes ratios wider than 9:16. Use a horizontal source only when the subject and text remain clear in the actual preview. It is not the safest single-file choice for both TikTok and Reels.
Where should I put captions in a vertical video?
Keep captions and decision-critical text in a central, high-contrast area with extra space from the top and bottom edges. Check the destination preview because safe areas vary with placement, caption length, and interface overlays.
How does the AI Video Generator fit into a publish workflow?
Use the AI Video Generator to create a draft and move through preview, editing, and export. AI videos for TikTok do not replace your final check of the full video, rights, claims, captions, audio, framing, and platform preview.
Does a 9:16 video guarantee better results?
No. It is a practical format choice supported by current platform guidance, not a promise of views, engagement, traffic, or conversion. Judge the finished asset by clarity, compliance, and fit for its destination.
What to do next
Write the opening sentence, mark the safe area on a 9:16 frame, and complete the checklist before you generate. Then open the Pippit AI Video Generator, preview the draft, and make the final decision from the exported file and destination preview.