How to add music, voice-over and sound effects to a map animation

Music

One track plays under the whole video. Choose where in the track to start (to skip an intro), fade it in and out, and loop it if the video is longer. Use music you have the rights to: royalty-free libraries such as the YouTube Audio Library or Pixabay Music work well.

Voice-over

Each scene has its own voice-over. Press Record and the scene plays from the moment its line starts drawing while your microphone records, so your words line up with the map. Recording stops at the end of the scene, or press Stop. Wear headphones, so the preview isn't recorded too. You can also add an audio file recorded on your phone. Then nudge the start time and the volume.

While someone is speaking, the music dips automatically. Set how far under Lower the music while speaking.

Sound effects

Built-in effects give the trip a sense of motion: a jet roar on flights, the clatter of rail joints on trains, an engine hum on the road, waves under boats, footsteps on hikes and hooves on horseback. A whoosh plays as the camera flies between scenes, and a soft chime marks each stop. The sounds are generated in your browser rather than taken from a sound library, so they are free to use in any video, including monetised ones.

What you hear is what you get

The preview plays exactly the mix that goes into the MP4: music, voice-over and effects, with the same levels and timing. The soundtrack is encoded as AAC alongside the H.264 video. Transparent WebM and GIF exports have no sound.