How to Make TikTok Videos with AI (2026 Step-by-Step)

Go to submagic.co and sign up for a free account — the free plan includes 3 videos/month (max 1 minute 30 seconds, Submagic watermark on exports) so you can test caption quality before purchasing. For the full workflow without watermarks and with Brand Kit access, upgrade to the Starter plan at $12/mo billed annually (15 videos/month). Once signed in, click 'New Project' from the Submagic dashboard.

Submagic does not require any video editing experience or software installation — it runs entirely in the browser. New project creation takes under 30 seconds. You can also start a project directly from the Submagic mobile app (iOS and Android), which is useful for posting TikTok content captured on your phone without transferring files to a desktop.

Click 'Upload Video' and select your clip from your computer. Submagic accepts MP4, MOV, and WebM files up to 1GB. The recommended clip length for TikTok is 15-90 seconds — Submagic handles up to 10 minutes on Starter and up to 30 minutes on Pro ($23/mo annual), but TikTok's algorithm favors shorter clips that drive high completion rates, so 30-60 second clips are optimal for most use cases.

Processing after upload takes approximately 30-90 seconds depending on clip length. During processing, Submagic analyzes the audio track for transcription and applies its Clean Audio AI to reduce background noise. You will see a progress bar in the project view — no page refresh needed. If you are uploading a vertical (9:16) clip from your phone, Submagic preserves the original framing automatically.

When processing completes, Submagic displays the full caption transcript with word-level timestamps. Caption accuracy was 98%+ on clean English audio in our 30-day test — effectively identical to professional human captioning on well-recorded content. For recordings with background noise, strong accents, or heavy technical jargon, accuracy drops to 90-95%, requiring 2-5 corrections per 60-second clip.

Click any word in the transcript to correct it. Edits apply instantly to caption timing without re-processing the video. Focus corrections on: proper nouns, brand and product names, numbers and statistics, and homophones. A well-recorded 30-60 second TikTok clip typically requires 0-3 corrections. Accurate captions are especially important for TikTok because the algorithm indexes caption text for search discovery — incorrect captions reduce your reach on relevant queries.

Click 'Caption Style' to open the style panel. For TikTok, select the 'Animated' word-by-word style — this is the style that drove 2.3x higher completion rates in our A/B test versus plain-text captions on identical clips. The animation highlights each word as it is spoken, which draws viewer attention forward through the clip and reduces drop-off before the video ends. Submagic's TikTok Preset within the Animated style automatically sets font size, position, and animation timing optimized for 9:16 mobile viewing.

If your content is more professional in tone (B2B, educational, finance), the Bold style — full sentence with emphasis on key words — is a strong alternative to Animated. Avoid the Minimal style for TikTok unless your content relies heavily on visual storytelling where large captions would obscure the scene. Customize font, text color, and caption position (standard: centered lower third) within the selected style. All style changes preview in real time in the clip editor.

Click 'Brand Kit' in the Submagic sidebar. Enter your brand's primary color (hex code), select your font (or upload a custom font file), and upload your logo as a PNG with transparent background. Once configured, Brand Kit applies automatically to every new Submagic project — you set it once and every future clip matches your brand without additional work.

Brand Kit is included in all paid Submagic plans (Starter and above). For agencies managing multiple client brands, Submagic Pro ($23/mo annual) supports multiple Brand Kits — one per client — with the ability to switch between them per project. The logo appears as a small, non-intrusive watermark in the corner of the frame. For TikTok specifically, position the logo in the upper-left or upper-right corner to avoid covering the TikTok interface elements (like/comment/share buttons) that appear along the right edge of the screen.

Click 'Export,' then 'Publish to TikTok' in the export panel. Connect your TikTok account the first time via TikTok's OAuth flow — the connection persists for all future projects. From the publish panel, add your TikTok caption text, hashtags (TikTok recommends 3-5 relevant hashtags), select your privacy setting (Public, Friends, or Private for draft scheduling), and confirm. Submagic posts the clip directly to TikTok without requiring a download and re-upload.

For content planning: use Submagic's scheduled publish feature (available on Pro) to queue clips at optimal posting times. TikTok's highest-engagement windows vary by niche and audience, but general benchmarks from our testing show 6-10 PM local time on weekdays and 10 AM-12 PM on weekends as strong default windows for English-language content. Batch-processing 5 clips from one recording session and scheduling them across two weeks is the most time-efficient TikTok production workflow for consistent creators.