AI voiceover is one of the more debated additions to the ranking-video format. It isn't always an improvement - here's how to decide when it's worth turning on.

What AI voiceover actually adds

A voice reading out the rank number and keyword gives viewers a second channel of information alongside the on-screen text, which can help viewers who are watching passively with sound on rather than reading captions closely.

When it helps

Longer or more complex keywords benefit most - a voiceover can land nuance that a two-word on-screen label can't. It also helps content aimed at audiences less used to reading fast on-screen text, such as younger viewers.

When it hurts

A large share of Shorts and TikTok viewing happens with sound off, especially in public settings. If your rank overlays already communicate everything clearly on-screen, an added voiceover is redundant at best and can feel like unnecessary narration over already-fast-paced clips.

Watch the pacing

A voice reading a full sentence per clip can slow the video down if each clip is only on-screen for 3-5 seconds. Keep voiceover lines extremely short - a number and a keyword, not a full sentence - to avoid working against the format's pace.

Test it against your own audience

The honest answer is that this varies by niche and audience. Try a handful of videos with voiceover on and a handful with it off, and compare watch-through rate rather than assuming either option is universally better.

Toggle voiceover per video

Shortszilla lets you turn AI voiceover on or off per generation, so you can A/B test it against your own audience without extra editing work.

Try it with and without voiceover →

Frequently Asked Questions

Does an AI voice sound noticeably synthetic?

Quality varies by tool, but modern AI voices are close enough to natural speech that most casual viewers don't register it as artificial within a fast-paced short clip.

Should every clip in the video have a voiceover line?

Not necessarily - some creators only voice the rank number and save a full line for the final #1 reveal, keeping the rest of the video visually driven.