Not every video starts as a script. Sometimes you have raw footage — a product demo, a testimonial, a phone clip — and you need to turn it into something clean and postable. CelestiAI's Video Studio is a browser-based editor that lets you upload footage, transcribe it, add captions, and export, without installing anything. Here's how to use it.
What you'll need
- A free CelestiAI account.
- Your footage — MP4, MOV, WebM, or MKV, up to 500 MB per file.
- A clear idea of the finished clip: the hook, the key lines, and the CTA.
What Video Studio is for
Video Studio is the editing workspace — different from the template-driven Script-to-Video maker. Use it when you have real footage you want to polish: trim it, caption it, and export a finished clip. It's built for UGC-style content, testimonials, demos, and repurposing footage you already shot.
Step 1: Open Studio and drop in your footage
From your dashboard, open CelestiAI Studio. You'll see a big drop zone: "Drop your video here." Drag your file in or click Choose video.
One reassuring detail: the dashboard previews your video locally — nothing is uploaded until you choose to use AI, save, or export. You can look around first, or click Try a sample video to explore before committing your own file.
Step 2: Transcribe your footage
Once your video is in the workspace, run transcription. CelestiAI turns the speech into text — the foundation for captions, edits, and searchable content. Check the transcript for accuracy, especially names and numbers.
Step 3: Add and style captions
With your transcript in hand, generate captions. Because they're tied to the spoken words, they stay in sync as you trim. Style them for readability on a phone: bold enough to read at a glance, positioned so they don't cover faces or key product shots.
Word-timed captions are what make a clip watchable on mute — the default way most people scroll social feeds.
Step 4: Trim and tighten
Cut the dead air at the start, the fumbles in the middle, and anything after the CTA. UGC clips live or die on pace: keep the hook in the first second and let every line earn its place.
Step 5: Tell AI what to change (optional)
Beyond captions, you can instruct the AI to make adjustments on your footage — the Studio is built around "drop in your footage, tell AI what to change, make it yours." Use this for quick clean-ups rather than a full manual edit; the point is speed.
Step 6: Export
When the clip is clean, export. Sign in to save your project and download the finished file. Your edit is preserved so you can come back, adjust, and re-export as needed.
Tips for better UGC edits
- Hook first. Reorder or trim so the most compelling moment is at the top.
- Caption for mute. Many viewers never turn the sound on — assume they read.
- Keep it short. Trim ruthlessly; a tight 20 seconds beats a loose 45.
- Match the platform. Crop to 9:16 for Shorts/Reels/TikTok, 16:9 for YouTube.
Common mistakes
- Leaving dead air at the start. The first second decides the scroll.
- Unreadable captions. Tiny or low-contrast text loses viewers.
- Exporting before checking the transcript. A wrong name or number is embarrassing in captions.
Where Video Studio fits
Video Studio is the hands-on editing corner of CelestiAI. It complements the automated makers: use Script-to-Video and topic-to-video for AI-built motion videos, Long video to shorts for repurposing, and Video Studio when you have real footage to polish. Together they cover the whole content workflow.
Wrapping up
Video Studio gives you a fast, browser-based way to turn raw footage into captioned, ready-to-post clips. Drop in your video, transcribe, caption, trim, and export — no install, no timeline learning curve.