Created
December 23, 2020 19:30
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AWS Lambda to download youtube videos to S3
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// To use this, put it in a folder, install ytdl-core with `npm i ytdl-core`, then create a ZIP with the content of the folder and deploy it. | |
// https://docs.aws.amazon.com/lambda/latest/dg/nodejs-package.html#nodejs-package-dependencies | |
var AWS = require('aws-sdk'); | |
const ytdl = require('ytdl-core'); | |
const stream = require('stream'); | |
var s3 = new AWS.S3(); | |
exports.handler = async (event, context, cb) => { | |
const { videoUrl, key, bucket } = event; | |
const bucketName = bucket || process.env.BUCKET; | |
const keyName = `${key}-${context.awsRequestId}.mp4`; | |
const uploadStream = ({ Bucket, Key }) => { | |
const pass = new stream.PassThrough(); | |
return { | |
writeStream: pass, | |
promise: s3.upload({Bucket, Key, Body: pass}).promise(), | |
}; | |
} | |
const { writeStream, promise } = uploadStream({Bucket: bucketName , Key: keyName}); | |
const pipeline = ytdl(videoUrl).pipe(writeStream); | |
return promise | |
.then(() => `Upload completed successfully. Find it at ${bucketName}/${keyName}`)) | |
.catch((err) => { | |
return ('Upload failed.', err.message); | |
}); | |
}; |
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