Now, let’s start off by installing the dependencies for our project. This might be a big deal if one of our functions was close to the 250 GB limit, but that isn’t the case here so either way is fine. The only downside of sharing the directory is that there will be a few extra dependencies in node_modules which are only needed by one of the two Lambda functions. This is the pattern that we’ll follow while developing the YouTube MP3 downloader backend we’ll first build the entire app locally using Express, and then move on to integrating with Lambda after we have everything working.īefore we get started, note that you can either create a new working directory for the YouTube MP3 downloader project, or continue working in the same directory that you used during the media transcoder tutorial.
#Ww youtube mp3 download full
That stuff is all awesome, but it’s also just really convenient being able to run an API on your local machine during development without needing to worry about emulating a full Lambda environment. It offers easy routing, a robust middleware ecosystem, templating integrations, and more out of the box–all while being relatively lightweight. Whenever my intention is to eventually deploy a simple API on AWS Lambda, I like to start out by prototyping it locally using Express. Now that that’s out of the way, let’s get building! The Backend API Starring that repository is also a great way to find out about new content from Intoli, because we post supplementary materials there for all of our new technical articles.
#Ww youtube mp3 download code
We’ll go through the process of building everything up step-by-step here, but all of the finished code is also available in the intoli-article-materials repository.įeel free to browse through there at any point to get a better idea of how everything fits together. If you stumbled upon this without having read that transcoding tutorial first, then you’ll probably want to go check it out in order to better understand the context of these instructions. Note that we’ll be picking things up exactly where the last article left off we’ll assume that you have already created the roles, policies, and the transcoding Lambda function from that first part.
#Ww youtube mp3 download series
This second installment of the series will cover building an Express backend for the bookmarklet and the process of deploying it using AWS Lamda and AWS API Gateway. One of the more difficult aspects of making this work is transcoding the content to an MP3 format on Lambda, which we covered in the first part of this tutorial. Your browser does not support the video tag.
The basic interaction flow is that you click on the bookmarklet while on the page for a specific video, a new tab opens and displays a progress bar for the conversion, and then the download starts automatically as soon as it’s ready. The end result will be a browser bookmarklet which can be used to convert YouTube videos to MP3s and download them. Let’s focus on the easy part first: what we’ll be building in this tutorial.
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