Speed is the setting people adjust most and think about least. The right question isn’t “what number should the slider be on” but “how many words per minute do I speak in this kind of video”. Once you know that, the slider just follows.
This guide gives you the reference numbers, a table of recommended speeds by video type, a one-minute test to measure your own pace, and the details that make a speed feel right or wrong: font size, line length and punctuation.
Words per minute, explained
Spoken delivery is usually measured in words per minute (wpm). For English, the ranges cited in voice-over and presentation work are:
- Audiobooks and narration: around 150–160 wpm.
- Conversational video: around 130–150 wpm.
- Presentations and explainers: around 110–130 wpm.
- Slow, dramatic delivery: under 100 wpm.
A teleprompter’s speed control doesn’t show wpm — it’s a scroll rate. But scroll rate and speaking rate have to match, and the way to match them is to measure yourself once and then trust the speed key or a controller for small corrections.
Recommended speed by video type
| Video type | Target pace | Why |
|---|---|---|
| Vlog, casual talking | 140–160 wpm | Energy matters more than precision; fast feels alive. |
| YouTube tutorial | 120–140 wpm | Viewers follow steps; give them half a beat per instruction. |
| Product demo | 110–130 wpm | Features need air; numbers must land. |
| Corporate or course video | 100–120 wpm | Formal register, often watched tired or distracted. |
| Ad or promo (15–30 s) | 150–170 wpm | Fixed duration, dense message; written to be fast. |
| Webinar / live talk | 120–140 wpm | Improvised around the script; pauses for reactions. |
| Voice-over narration | 140–155 wpm | Close to natural reading, no camera pressure. |
Treat these as starting points. Your natural pace, the language and the script’s difficulty move the number. Spanish and Italian, for instance, tend to run a bit faster in syllables than English at the same perceived energy, so test rather than assume.
The one-minute test
Measuring your own pace takes three minutes:
- Open a text with a known word count — your actual script, ideally.
- Read 100 words of it aloud, comfortably, at the pace you’d use on camera. Mark the time.
- Adjust to a full minute: if 100 words took 40 seconds, your pace is about 150 wpm.
- Set the teleprompter speed so the scroll keeps that pace, then fine-tune live with the
+and-keys.
Do the test with the real script, not a random text. Technical vocabulary slows you down; familiar words speed you up. And measure the pace you actually enjoy listening to when you play the take back — that’s the right one, not the fastest you can survive.
Matching the scroll to your speech
A speed that’s right on paper can still feel wrong in practice. Three things fix most of it:
Font size before speed. If lines are hard to catch, the reflex is to slow down the scroll — but often the fix is a bigger font with short lines, so you read each line in one glance and the scroll rate stops mattering as much. NanoPrompter adjusts font size with q/a keys; the full list is on the keyboard shortcuts page. Fullscreen mode stretches the same font across the whole screen for even easier reading.
Ride the scroll, don’t race it. The scroll should arrive at the next line exactly when you need it. Slightly slow is better than slightly fast: you can lean back into a slow scroll, but a fast one drags your voice. If you keep finishing lines early, nudge speed up one step, not three.
Use punctuation as timing. Write the script with the pauses you want: blank lines for breaths, three dots for suspense. Then the text itself paces you, and the scroll just follows. This is also why scripts written for reading (long sentences, dense paragraphs) feel bad at any speed — the script writing guide covers how to fix that at the source.
Adjusting speed while you speak
Live adjustments are normal, even for experienced presenters. With a keyboard, +/- change speed on the fly; with a game controller you can do it from a distance, hands off the keyboard — useful when the camera is far away or you’re standing.
For recordings with cuts, there’s a simpler trick: don’t adjust at all. Stop, breathe, restart from the last sentence. Editors cut on breaths anyway, and constant speed changes inside a take are harder to edit than a clean restart.
Quick checklist
- Measure your pace once with the one-minute test: 100 words, timed.
- Pick the target range for the video type from the table above.
- Set font size first, then match the scroll speed to your pace.
- Write pauses into the script instead of relying on reflexes.
- Fine-tune live with the speed keys, or restart the sentence when in doubt.
When you’re ready to test your number, open the editor, paste a script and read for one minute. It’s the only calibration the slider has ever needed.