How to make video ads with your phone

What to record

Pick one of these and you have the raw material for an ad:

• You, talking about the problem your product solves and why you built it (a founder ad).
• A customer, saying what changed after they used it (a testimonial ad).
• Your hands or screen, showing the product doing the thing (a demo ad).
• A quick reaction or before and after, if your product has a visible result.

Set up the phone

A few minutes of setup makes more difference than any camera upgrade:

• Use the main (back) camera if you can; it's usually sharper than the front one.
• Stand facing a window or another soft light source, not with it behind you.
• Put the phone at eye level on a stand, a stack of books or a cheap tripod.
• Use a clip-on microphone, or record somewhere quiet and close to the phone. Clear sound matters more than a sharp picture.
• Turn on flight mode so a notification doesn't ruin a good take.

Film it so the edit is easy

Film vertical if most of your ads will run on Reels, TikTok and Shorts; leave a little space around your head so it can be reframed to other shapes later.

Don't aim for one perfect take. Say your key lines two or three times, in slightly different words, and keep going if you stumble. It's much easier to pick the best take in the edit than to get it right first time. Pause for a second between thoughts: it makes clean cut points.

Edit it into an ad

Open on your strongest line, not your introduction. Cut the pauses, the umms and the false starts, keep the best take of each line, and end with one clear next step, such as try it free, see the demo or use a code.

Then make it work with the sound off: word-timed captions and a simple graphic for any number or claim. Finally, export each shape you need: 9:16 for Reels, TikTok and Shorts, 1:1 or 4:5 for feeds, 16:9 for YouTube.

Common phone-ad mistakes

The usual reasons a phone ad doesn't work, and none of them are the phone:

• Bad sound: echo, wind or background noise. Fix it at recording, not in the edit.
• Starting with "Hi, I'm..." instead of the reason to watch.
• Light behind you, leaving your face in shadow.
• Leaving every take in, so the ad runs long and repeats itself.

Doing it in MirrorCut

MirrorCut is an AI video editor for your own recordings. Upload the footage and ask; its agent makes the edit on a real timeline, and every change is outlined for you to accept or revert. For example:

• “Make a 30-second ad from this phone recording, opening on the strongest line”
• “Keep the best take of each line and cut the rest”
• “Add word-timed captions in a bold style”
• “Export 9:16, 1:1 and 16:9 versions”

Free tools

No sign-up; they run in your browser.

• Online teleprompterA free teleprompter in your browser: paste your script, set the speaking pace and text size, mirror it for a glass, and go full screen while you record.
• Video aspect ratio calculatorEnter your video's size to see its aspect ratio, the largest crop for 9:16, 4:5, 1:1 and 16:9, and the standard HD and 4K output sizes for each.

Questions

Is phone footage good enough for paid ads?

Yes. For most social ads, a clear, well-lit phone recording with good sound works well, and often better than a polished production, because it feels authentic.

Should I film vertical or horizontal?

Film vertical if most of your ads will run on Reels, TikTok and Shorts. Leave some space around you so the footage can be reframed to square or horizontal later.

What's the most important piece of extra gear?

A clip-on microphone. Viewers forgive a soft picture far more than bad audio.