Motion2DHow to add a voiceover to an animation
To do a voiceover for an animation: write the script, record or generate the voice, clean it up, then time the animation to the voice, mix music underneath and add captions. Voice is half of an animated video: a clear, well-timed voiceover makes simple animation feel professional; a muddy one ruins great drawing.
How it works
Record or generate
Your voice, a voice actor, or a natural AI voice.
Clean it up
Cut breaths and mistakes, reduce background noise, even out the volume.
Animate to the voice
Lock the voice first, then time the scenes to it, not the other way round.
Mix music under it
Music well below the voice, and ducked when the narrator speaks.
Add captions
Generated from the script so the spelling is right.
Recording tips if you use your own voice
Record in a small room with soft furnishings; a wardrobe full of clothes works. Keep the mic a hand's width away. Smile slightly, which sounds friendlier. Record each paragraph twice and keep the better take.
The shortcut
Motion2D does all five steps in one: it voices the script in 11 languages (or in your own voice), times scenes to the narration, mixes music and adds captions.
Example: a 60-second voiceover, step by step
Script: 140 words on why leaves change colour. Record it twice in a wardrobe full of clothes, keep the better take, cut the breaths and the one stumble, and normalise the volume. Import the voice into your editor first, then place scenes to it: the green leaf on the first sentence, the chlorophyll breaking down on the second, the reds and yellows appearing on the third. Music goes 15 to 20 dB under the voice. Captions come from the script.
Done by hand, that's an afternoon. In Motion2D, the same steps happen in one run for 2 credits, in a stock voice or your own.
Equipment that's enough
You don't need a studio. A recent phone or a USB microphone around the price of a meal out is enough if the room is quiet and soft. Free tools like Audacity can remove background hiss and even out volume. Spend money on the room before the microphone: soft furnishings beat expensive gear in an echoey space.
- Phone or USB microphone
- Quiet, soft room
- Headphones to check the recording
- Free editor such as Audacity
AI voice or human voice?
AI voices are fast, consistent and available in many languages, which suits weekly channels and translations. Human voices bring acting and personality, which suits character-driven stories and brands built on a person. Many creators use AI for drafts and volume, and their own voice for flagship videos. See AI voiceover animation.
Questions and answers
Should I animate first or record voice first?
Record first. Animation timed to a voice feels natural; a voice squeezed into finished animation sounds rushed.
How loud should background music be?
Well under the voice, roughly 15 to 20 dB lower, so every word is clear.
Can I use AI voiceover in videos I sell?
It depends on the voice tool's licence, so check its terms. Your own recorded voice is yours to use.
How do I sync a voiceover to animation?
Lock the finished voice track first, then cut and time each scene to the words. Syncing animation to voice is far easier than the reverse.
What's a good speaking pace for animation?
Around 130 to 150 words per minute for explainers; slower for children's stories and bedtime videos.
Keep exploring
Animation with a voiceover that sounds like a person
Animated videos with an AI voiceover built in: natural text to speech narration in 11 languages, matched to scenes and captions. No recording needed.
Your cartoon, narrated in your voice
Record a short voice sample and your animated video is narrated in your own voice, in any of 11 languages. Consent built in. No studio needed.
Word-by-word captions, already in sync
Every Motion2D video can include animated word-by-word captions synced to the narration, in 11 languages. No separate caption tool or manual timing.
Your next video starts with one sentence.
Type a topic. Motion2D researches it, writes it, draws it and voices it.
Get started