A library that provides an API to implement video playback and recording in apps.
The Video
component from expo-av
displays a video inline with the other UI elements in your app.
Much of Video and Audio have common APIs that are documented in AV documentation. This page covers video-specific props and APIs. We encourage you to skim through this document to get basic video working, and then move on to AV documentation for more advanced functionality. The audio experience of video (such as whether to interrupt music already playing in another app, or whether to play sound while the phone is on silent mode) can be customized using the Audio API.
Android Device | Android Emulator | iOS Device | iOS Simulator | Web |
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-
npx expo install expo-av
If you are installing this in an existing React Native app, start by installing expo
in your project. Then, follow the additional instructions as mentioned by the library's README under "Installation in bare React Native projects" section.
Here's a simple example of a video with a play/pause button.
import { useState, useRef } from 'react';
import { View, StyleSheet, Button } from 'react-native';
import { Video, ResizeMode } from 'expo-av';
export default function App() {
const video = useRef(null);
const [status, setStatus] = useState({});
return (
<View style={styles.container}>
<Video
ref={video}
style={styles.video}
source={{
uri: 'https://d23dyxeqlo5psv.cloudfront.net/big_buck_bunny.mp4',
}}
useNativeControls
resizeMode={ResizeMode.CONTAIN}
isLooping
onPlaybackStatusUpdate={status => setStatus(() => status)}
/>
<View style={styles.buttons}>
<Button
title={status.isPlaying ? 'Pause' : 'Play'}
onPress={() =>
status.isPlaying ? video.current.pauseAsync() : video.current.playAsync()
}
/>
</View>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
backgroundColor: '#ecf0f1',
},
video: {
alignSelf: 'center',
width: 320,
height: 200,
},
buttons: {
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
},
});
For more advanced examples, check out the Playlist example, and the custom VideoPlayer
controls component that wraps <Video>
, adds custom controls and use the <Video>
API extensively. The VideoPlayer
controls is used in this app.
import { Video } from 'expo-av';
Type: React.Component<VideoProps, VideoState>
The Video component props can be divided into following groups:
source
and posterSource
props customize the source of the video content.useNativeControls
, resizeMode
, and usePoster
props customize the UI of the component.onPlaybackStatusUpdate
, onReadyForDisplay
, and onIOSFullscreenUpdate
props pass information of the state of the Video
component.onLoadStart
, onLoad
, and onError
props are also provided for backwards compatibility with Image
(but they are redundant with onPlaybackStatusUpdate
).
Finally, the rest of props are available to control the playback of the video, but we recommend that, for finer control, you use the methods
available on the ref
described in the AV documentation.React.ComponentType<{
source: ImageProps['source'],
style: ImageProps['style']
}>
A react-native Image
like component to display the poster image.
number
The desired audio panning value of the audio for this media. This value must be between -1.0
(full left) and 1.0
(full right).
See the AV documentation for more information.
boolean
A boolean describing if the media should play once (false
) or loop indefinitely (true
).
See the AV documentation for more information.
boolean
A boolean describing if the audio of this media should be muted. See the AV documentation for more information.
(error: string) => void
A function to be called if load or playback have encountered a fatal error. The function is passed a single error message string as a parameter.
Errors sent here are also set on playbackStatus.error
that are passed into the onPlaybackStatusUpdate
callback.
(event: VideoFullscreenUpdateEvent) => void
A function to be called when the state of the native iOS fullscreen view changes (controlled via the presentFullscreenPlayer()
and dismissFullscreenPlayer()
methods on the Video
's ref
).
(status: AVPlaybackStatus) => void
A function to be called once the video has been loaded. The data is streamed so all of it may not have been fetched yet, just enough to render the first frame.
The function is called with the AVPlaybackStatus
of the video as its parameter. See the AV documentation for further information.
() => void
A function to be called when the video begins to be loaded into memory. Called without any arguments.
(status: AVPlaybackStatus) => void
A function to be called regularly with the AVPlaybackStatus
of the video. You will likely be using this a lot.
See the AV documentation for further information on onPlaybackStatusUpdate
, and the interval at which it is called.
(event: VideoReadyForDisplayEvent) => void
A function to be called when the video is ready for display. Note that this function gets called whenever the video's natural size changes.
number
The desired position of playback in milliseconds. See the AV documentation for more information.
ImageProps['source']
The source of an optional image to display over the video while it is loading. The following forms are supported:
{ uri: 'http://path/to/file' }
with a network URL pointing to an image file on the web.require('path/to/file')
for an image file asset in the source code directory.ImageProps['style']
An optional property to pass custom styles to the poster image.
number
A number describing the new minimum interval in milliseconds between calls of onPlaybackStatusUpdate
.
See the AV documentation for more information.
number
The desired playback rate of the media. This value must be between 0.0
and 32.0
. Only available on Android API version 23 and later and iOS.
See the AV documentation for more information.
ResizeMode
A string describing how the video should be scaled for display in the component view bounds.
Must be one of the ResizeMode
enum values.
boolean
A boolean describing if we should correct the pitch for a changed rate. If set to true
, the pitch of the audio will be corrected
(so a rate different than 1.0
will timestretch the audio).
See the AV documentation for more information.
boolean
A boolean describing if the media is supposed to play. Playback may not start immediately after setting this value for reasons such as buffering.
Make sure to update your UI based on the isPlaying
and isBuffering
properties of the AVPlaybackStatus
.
See the AV documentation for more information.
AVPlaybackSource
The source of the video data to display. If this prop is null
, or left blank, the video component will display nothing.
Note that this can also be set on the ref
via loadAsync()
. See the AV documentation for further information.
See: The Android developer documentation and the iOS developer documentation lists of the video formats supported on Android and iOS.
AVPlaybackStatusToSet
A dictionary setting a new AVPlaybackStatusToSet
on the video.
See the AV documentation for more information on AVPlaybackStatusToSet
.
boolean
A boolean which, if set to true
, will display native playback controls (such as play and pause) within the Video
component.
If you'd prefer to use custom controls, you can write them yourself, and/or check out the VideoPlayer
component.
boolean
A boolean which, if set to true
, will display an image (whose source is set via the prop posterSource
) while the video is loading.
StyleProp<ViewStyle>
An optional property to pass custom styles to the internal video component.
number
The desired volume of the audio for this media. This value must be between 0.0
(silence) and 1.0
(maximum volume).
See the AV documentation for more information.
This dismisses the fullscreen video view.
A Promise
that is fulfilled with the AVPlaybackStatus
of the video once the fullscreen player has finished dismissing,
or rejects if there was an error, or if this was called on an Android device.
This presents a fullscreen view of your video component on top of your app's UI. Note that even if useNativeControls
is set to false
,
native controls will be visible in fullscreen mode.
A Promise
that is fulfilled with the AVPlaybackStatus
of the video once the fullscreen player has finished presenting,
or rejects if there was an error, or if this was called on an Android device.
Parameter | Type | Description |
---|---|---|
onPlaybackStatusUpdate | null | (status: AVPlaybackStatus) => void | A function taking a single parameter |
Sets a function to be called regularly with the AVPlaybackStatus
of the playback object.
onPlaybackStatusUpdate
will be called whenever a call to the API for this playback object completes
(such as setStatusAsync()
, getStatusAsync()
, or unloadAsync()
), nd will also be called at regular intervals
while the media is in the loaded state.
Set progressUpdateIntervalMillis
via setStatusAsync()
or setProgressUpdateIntervalAsync()
to modify
the interval with which onPlaybackStatusUpdate
is called while loaded.
void
Name | Type | Description |
---|---|---|
fullscreenUpdate | VideoFullscreenUpdate | The kind of the fullscreen update. |
status (optional) | AVPlaybackStatus | The |
Name | Type | Description |
---|---|---|
height | number | A number describing the height in pixels of the video data. |
orientation | 'portrait' | 'landscape' | A string describing the natural orientation of the video data. |
width | number | A number describing the width in pixels of the video data. |
Name | Type | Description |
---|---|---|
naturalSize | VideoNaturalSize | An object containing the basic data about video size. |
status (optional) | AVPlaybackStatus | The |
PLAYER_WILL_PRESENT
VideoFullscreenUpdate.PLAYER_WILL_PRESENT = 0
Describing that the fullscreen player is about to present.
PLAYER_DID_PRESENT
VideoFullscreenUpdate.PLAYER_DID_PRESENT = 1
Describing that the fullscreen player just finished presenting.
The rest of the API on the Video
component ref
is the same as the API for Audio.Sound
- see the AV documentation for further information.