AI Video & AI Voicefor Content CreationReels · Shorts · TikTok

Before opening any tool, your script is the foundation of everything. Pick a niche where AI visuals outperform real footage (history, science, mythology, horror, nature) and write a 60–160 word script structured around a hook, content delivery, and closing CTA. Your script drives both tools — it determines what the AI voice says and what the AI video shows.

Write your script in parallel with noting the visual scene for each section. This parallel scripting technique means your AI video prompts write themselves as you write your narration.

Open Scenith's AI Voice Generator. Paste your complete script. Select the voice that matches your channel identity — and the emotion preset that matches your content type. Click generate. In approximately 3 seconds, your narration is ready.

Critical tip: Generate the voice first because it sets your video's timing. Listen to the output and note exactly when each section of the narration lands. Those timestamps become your video editing cues — you'll sync each AI video clip to the corresponding narration section in the editing stage.

Open Scenith's AI Video Generator in a new tab. Set aspect ratio to 9:16immediately. For a 45-second Reel with 3 sections, you need 3–6 video clips (5–10 seconds each) that match each narration segment.

Write one detailed cinematic prompt per section of your script. Use the anatomy: [subject + action] + [environment] + [lighting/mood] + [camera movement] + [style keywords].Submit all prompts in rapid succession — while the first clip generates, write and submit the second. This parallel generation workflow cuts your video prep time in half.

Download all clips as MP4 files once generated. You now have everything you need for the editing stage.

CapCut is the free editing standard for AI content creators. Import your AI voiceover MP3 as the primary audio track. Import your AI video clips to the video timeline. Trim and arrange clips to match the narration timing you noted in Step 2.

Then: (1) Use CapCut's Auto Captions feature — it perfectly transcribes AI voice. Style captions for your brand. (2) Add background music at -15 to -20dB from TikTok's royalty-free library or CapCut's built-in tracks. (3) Add minimal text overlays for key points if desired. (4) Export at 1080×1920 pixels (9:16, 1080p, 30fps).

Your exported 9:16 MP4 is natively ready for Instagram Reels, YouTube Shorts, and TikTok — no format conversion needed. The same file uploads to all three. This is the compounding advantage of AI content: one 25-minute session produces content for three major platforms simultaneously.

When uploading: (a) Add platform-native hashtags (3–5 niche tags, not generic ones). (b) Write a hook-style caption that mirrors your video's opening line. (c) On TikTok, add the AI Generated content label as required by guidelines. (d) Schedule with Later or Buffer if you've batch-produced multiple pieces.