react-native-reels-list

react-native-reels-list is a customizable React Native component designed to provide an intagram/tiktok like optimized video list experience. It offers a variety of features and options to ensure smooth and efficient video playback in your React Native applications.

Features

Optimized video list for smooth performance
Customizable video height
Tap to mute functionality
Hold to pause functionality
Seekbar support
Loading indicator
Custom overlay components
Playback status updates

Installation

Install the package via npm:

npm install react-native-reels-list

or via yarn:

yarn add react-native-reels-list

Note: This package uses expo-av for video playback, expo-av is required to be installed in your project. Follow these installation instructions..

Usage

Here's an example of how to use the ReelsList component in your React Native application:

import { useCallback, useContext } from "react";
import { VIEWPORT_HEIGHT } from "@/constants";
import { useBottomTabBarHeight } from "@react-navigation/bottom-tabs";
import ReelsList, { VideoItemType } from "react-native-reels-list";
import { MuteContext } from "@/context";
import { AVPlaybackStatus } from "expo-av";

const videos = [
  { key: '1', uri: 'https://example.com/video1.mp4', thumbnail: 'https://example.com/thumbnail1.jpg', ...otherProperties},
  { key: '2', uri: 'https://example.com/video2.mp4', thumbnail: 'https://example.com/thumbnail4.jpg', ...otherProperties},
  // Add more videos as needed
];

const App = () => {
  const tabBarHeight = useBottomTabBarHeight();
  const { isMuted, handleMuteToggle } = useContext(MuteContext);
  const [currentVideoIndex, setCurrentVideoIndex] = useState(0);
  const [status, setStatus] = useState<AVPlaybackStatus | null>(null);

  const videoHeight = VIEWPORT_HEIGHT - tabBarHeight;

 const onViewableItemsChanged = useCallback(
    (info: {
      viewableItems: ViewToken<VideoItemType>[];
      changed: ViewToken<VideoItemType>[];
    }) => {
      // Update the current video index when the viewable items change
      setCurrentVideoIndex(
        (prev) => info.changed.find((item) => item.isViewable)?.index ?? prev
      );
      // If required, add your custom logic here
    },
    []
  );

  const handleGetItemLayout = useCallback(
    (data: ArrayLike<VideoItemType> | null | undefined, index: number) => {
      return {
        length: videoHeight,
        offset: videoHeight * index,
        index,
      };
    },
    [videoHeight]
  );

   const overlayComponent = useCallback(
    ({ item }: { item: VideoItemType, index:number }) => (
      // Custom overlay component for each video item. Add your custom UI with position: 'absolute' here.
      <View style={styles.overlay}>
        <Link href={`/profile/${item.username}`} asChild>
          <Pressable>
            <Text>@{item.username}</Text>
          </Pressable>
        </Link>
      </View>
    ),
    []
  );

  return (
    <ReelsList
      videoHeight={videoHeight}
      currentVideoIndex={currentVideoIndex}
      handleGetItemLayout={handleGetItemLayout}
      onViewableItemsChanged={onViewableItemsChanged}
      videos={videos}
      isMuted={isMuted}
      handleMuteToggle={handleMuteToggle}
      showSeekbar={true}
      showLoadingIndicator={true}
      holdToPause={true}
      overlayComponent={overlayComponent}
      onCurrentPlaybackStatusUpdate={(status) => setStatus(status)}
      refreshing={refreshing}
      onRefresh={() => {
        // Refresh the video list
      }}
      onEndReached={() => {
        // Fetch more videos
      }}
    />
  );
};

export default FollowingTopTab;


const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: "center",
    alignItems: "center",
  },
  overlay:{
    position: "absolute",
    bottom: 40,
    left: 8,
    zIndex: 2,
  }
});

export default App;

Props

The ReelsList component accepts the following props:

Prop	Type	Description	Default	Required
`currentVideoIndex`	number	The index of the current video being played.	-	Yes
`handleGetItemLayout`	function	Function to get the layout of each item in the list.	-	Yes
`onViewableItemsChanged`	function	Callback function when viewable items change.	-	Yes
`videos`	Array<{ key: string, uri: string, thumbnail: string, ...otherProperties }>	Array of video items to be displayed in the list.	-	Yes
`videoHeight`	number	Height of each video in the list.	-	Yes
`isMuted`	boolean	Flag to mute/unmute videos.	`false`	No
`handleMuteToggle`	function	Callback function to handle mute toggle.	-	No
`showSeekbar`	boolean	Flag to show/hide the seekbar.	`false`	No
`showLoadingIndicator`	boolean	Flag to show/hide the loading indicator.	`false`	No
`useNativeControls`	boolean	Flag to use native video controls.	`false`	No
`holdToPause`	boolean	Flag to enable hold-to-pause functionality.	`false`	No
`bottomOffset`	number	Offset from the bottom of the screen for the default seekbar and buffering indicator.	`0`	No
`overlayComponent`	({ item, index }) => ReactNode	Function to render a custom overlay component for each video.	-	No
`onCurrentPlaybackStatusUpdate`	(status: AVPlaybackStatus) => void	A function to be called regularly with the AVPlaybackStatus of the currently playing video. Helps in tracking the playback status of the video for custom UI updates.	-	No

Additionally, the component accepts all other FlatList props for added customizations.

Performance Metrics

Device	Max CPU Usage*	Idle CPU Usage	Avg. RAM Usage	Initial Load Time (Lazy Loading On)	Initial Load Time (Lazy Loading Off)
Two Video Lists (Two Top Tabs)
Samsung Galaxy A22 (6 GB RAM)	70%	13%	650 MB	1-2 Seconds	18 Seconds
Samsung Galaxy S22 Ultra (12 GB RAM)	37%	10%	770 MB	1-2 Seconds	13 Seconds
Samsung Galaxy A21s (4 GB RAM)	75%	18%	698 MB	4-5 Seconds	30-40 Seconds
One Video List (Single Top Tab)
Samsung Galaxy A22 (6 GB RAM)	48%	12%	515 MB	1-2 Seconds	-
Samsung Galaxy S22 Ultra (12 GB RAM)	32%	10%	635 MB	1-2 Seconds	-
Samsung Galaxy A21s (4 GB RAM)	71%	16%	532 MB	4-5 Seconds	-

*Note: The maximum CPU usage values represent occasional spikes and should not be a cause for concern.

Usage Tips

If you are using multiple simultaneously running video lists, load the lists lazily for improved performance.
On lower-end devices, if you encounter java.lang.OutOfMemoryError, set android:largeHeap="true" in the Android manifest.

Contributing

Contributions are welcome! Please open an issue or submit a pull request for any improvements or bug fixes.

Author

Developed by Simranjit Singh.

Acknowledgments

Special thanks to all the contributors and the React Native community for their support and inspiration.