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<Audio>

Using this component, you can add audio to your video. All audio formats which are supported by Chromium are supported by the component.

API​

src​

Put an audio file into the public/ folder and use staticFile() to reference it.

tsx
import {AbsoluteFill, Audio, staticFile} from 'remotion';
 
export const MyVideo = () => {
  return (
    <AbsoluteFill>
      <Audio src={staticFile('audio.mp3')} />
    </AbsoluteFill>
  );
};

volume?​

The component also accepts a volume props which allows you to control the volume of the audio in it's entirety or frame by frame. Read the page on using audio to learn more.

Setting a static volume
tsx
import {AbsoluteFill, Audio, staticFile} from 'remotion';
 
export const MyVideo = () => {
  return (
    <AbsoluteFill>
      <Audio volume={0.5} src={staticFile('background.mp3')} />
    </AbsoluteFill>
  );
};
Changing the volume over time
tsx
import {AbsoluteFill, Audio, interpolate, staticFile} from 'remotion';
 
export const MyVideo = () => {
  return (
    <AbsoluteFill>
      <Audio volume={(f) => interpolate(f, [0, 30], [0, 1], {extrapolateLeft: 'clamp'})} src={staticFile('voice.mp3')} />
    </AbsoluteFill>
  );
};

By default, volumes between 0 and 1 are supported, where in iOS Safari, the volume is always 1.
See Volume Limitations for more information.

loopVolumeCurveBehavior?v4.0.142​

Controls the frame which is returned when using the volume callback function and adding the loop attribute.

Can be either "repeat" (default, start from 0 on each iteration) or "extend" (keep increasing frames).

startFrom? / endAt?​

<Audio> has two more helper props you can use:

  • startFrom will remove a portion of the audio at the beginning
  • endAt will remove a portion of the audio at the end

In the following example, we assume that the fps of the composition is 30.

By passing startFrom={60}, the playback starts immediately, but with the first 2 seconds of the audio trimmed away.
By passing endAt={120}, any audio after the 4 second mark in the file will be trimmed away.

The audio will play the range from 00:02:00 to 00:04:00, meaning the audio will play for 2 seconds.

tsx
import {AbsoluteFill, Audio, staticFile} from 'remotion';
 
export const MyVideo = () => {
  return (
    <AbsoluteFill>
      <Audio src={staticFile('audio.mp3')} startFrom={60} endAt={120} />
    </AbsoluteFill>
  );
};

playbackRate?v2.2.0​

You can use the playbackRate prop to control the speed of the audio. 1 is the default and means regular speed, 0.5 slows down the audio so it's twice as long and 2 speeds up the audio so it's twice as fast.

While Remotion doesn't limit the range of possible playback speeds, in development mode the HTMLMediaElement.playbackRate API is used which throws errors on extreme values. At the time of writing, Google Chrome throws an exception if the playback rate is below 0.0625 or above 16.

tsx
import {AbsoluteFill, Audio, staticFile} from 'remotion';
 
export const MyVideo = () => {
  return (
    <AbsoluteFill>
      <Audio src={staticFile('audio.mp3')} playbackRate={2} />
    </AbsoluteFill>
  );
};

muted?v2.0.0​

The muted prop will be respected. It will lead to no audio being played while still keeping the audio tag mounted. It's value may change over time, for example to only mute a certain section of the audio.

tsx
import {AbsoluteFill, Audio, staticFile, useCurrentFrame} from 'remotion';
 
export const MyVideo = () => {
  const frame = useCurrentFrame();
  return (
    <AbsoluteFill>
      <Audio src={staticFile('audio.mp3')} muted={frame < 30} />
    </AbsoluteFill>
  );
};

name?v4.0.71​

optional

A name and that will be shown as the label of the sequence in the timeline of the Remotion Studio. This property is purely for helping you keep track of items in the timeline.

loop?v3.2.29​

You can use the loop prop to loop audio.

tsx
import {AbsoluteFill, Audio, staticFile, useCurrentFrame} from 'remotion';
 
export const MyVideo = () => {
  const frame = useCurrentFrame();
  return (
    <AbsoluteFill>
      <Audio loop src={staticFile('audio.mp3')} />
    </AbsoluteFill>
  );
};

toneFrequency?v4.0.47​

Adjust the pitch of the audio - will only be applied during rendering.

Accepts a number between 0.01 and 2, where 1 represents the original pitch. Values less than 1 will decrease the pitch, while values greater than 1 will increase it.

A toneFrequency of 0.5 would lower the pitch by half, and a toneFrequency of 1.5 would increase the pitch by 50%.

acceptableTimeShiftInSeconds?v3.2.42​

In the Remotion Studio or in the Remotion Player, Remotion will seek the audio if it gets too much out of sync with Remotion's internal time - be it due to the audio loading or the page being too slow to keep up in real-time. By default, a seek is triggered if 0.45 seconds of time shift is encountered. Using this prop, you can customize the threshold.

pauseWhenBuffering?v4.0.111​

If set to true and the audio is buffering, the Player will enter into the native buffering state. The default is false, but will become true in Remotion 5.0.

showInTimeline?v4.0.122​

If set to false, no layer will be shown in the timeline of the Remotion Studio. The default is true.

delayRenderTimeoutInMilliseconds?v4.0.140​

Customize the timeout of the delayRender() call that this component makes.

delayRenderRetries?v4.0.140​

Customize the number of retries of the delayRender() call that this component makes.

useWebAudioApi?v4.0.306​

Enable the Web Audio API for the audio tag.

allowAmplificationDuringRender?v3.3.17​

Deprecated since v4.0.279: This prop intended to opt into setting the volume to a value higher than one, even though it would only apply during render.

The option does not make sense anymore, because it is now possible to set the volume higher than 1.
To prevent synthetic amplification, set a volume not higher than 1.

See also​