Stream Video Downloaded in MongoDB's GridFS using React Native Video
In this article, we will discuss how to stream a video file that has been saved using MongoDB's GridFS storage system and display it in a React Native application using the react-native-video library. We will cover the key concepts involved in retrieving the video file from GridFS and displaying it in a React Native component.
What is GridFS?
GridFS is a specification for storing and retrieving large files, such as video files, in MongoDB. It allows you to store large files that are larger than the 16MB BSON document size limit imposed by MongoDB. GridFS divides the file into chunks and stores each chunk as a separate document in a special collection called fs.files and fs.chunks.
Setting up GridFS in MongoDB
To use GridFS in MongoDB, you need to install the GridFSbucket package. You can do this using npm by running the following command:
npm install mongodb-memory-server mongodb
Once you have installed the package, you can create a new GridFSBucket instance like this:
const gridFSBucket = new mongodb.GridFSBucket(db, { bucketName: 'videos' });Saving a Video File in GridFS
To save a video file in GridFS, you can use the gridFSBucket.uploadFile() method. Here is an example of how you can save a video file:
const uploadStream = gridFSBucket.openUploadStream('myvideo.mp4');
fs.createReadStream('/path/to/myvideo.mp4').pipe(uploadStream);
uploadStream.once('finish', () => {
console.log('File uploaded successfully');
});Retrieving a Video File from GridFS
To retrieve a video file from GridFS, you can use the gridFSBucket.openDownloadStream() method. Here is an example of how you can retrieve a video file:
const downloadStream = gridFSBucket.openDownloadStream('myvideo.mp4');
const video = createVideo(downloadStream);Displaying a Video File in a React Native Component
To display a video file in a React Native component, you can use the react-native-video library. Here is an example of how you can display a video file:
import Video from 'react-native-video';
function VideoPlayer({ videoStream }) {
return (
- GridFS is a specification for storing and retrieving large files in MongoDB.
- To use GridFS, you need to install the GridFSbucket package.
- To save a video file in GridFS, you can use the
gridFSBucket.uploadFile()method. - To retrieve a video file from GridFS, you can use the
gridFSBucket.openDownloadStream()method. - To display a video file in a React Native component, you can use the react-native-video library.