#video

Video editing is a booming market with influencers being all the rage with Reels, TikTok, Youtube. Did you know that browsers now have all the APIs to do video editing in the browser? In this talk I'm going to give you a primer on how video encoding works and how to make it work within the browser. Spoiler, it's not trivial!

Type-checking a TypeScript codebase can be slow, especially for monorepos containing lots of projects that each need to use the type checker to generate type declaration files. In this talk, we introduce — for the very first time — a new TypeScript feature we are working on called “Isolated Declarations” that allows DTS files to be generated without using the type checker at all! This opens the door to faster declaration generation in TypeScript itself, as well as in external tools written in other languages such as ESBuild and swc. You'll see how to use this new option, and maybe (just maybe) you’ll be convinced about the benefits of explicit return types! Most importantly, we will show how Isolated Declarations enables parallel builds to spread work across your CPU cores to significantly improve the build speed of your TypeScript projects.

High quality video encoding in browsers have traditionally been slow, low-quality and did not allow much customisation. This is because browsers never had a native way to encode videos leveraging hardware acceleration. In this talk, I’ll be going over the secrets of creating high-quality videos in-browsers efficiently with the power of WebCodecs and WebAssembly. From video containers to muxing, audio and beyond, this talk will give you everything you need to render your videos in browsers today!

What does Conway's Law have in common with the video game League of Legends? They can both teach us about how to organise development teams that achieve collective intelligence. When it comes to the art of software development, it's never a game of chance

In this presentation, we'll present how video streaming works. We'll look at the anatomy of video streaming, and how video streaming is beneficial for delivering your content over just adding mp4 files.
We'll demonstrate live streaming
from
the browser, and then how to integrate that live stream into your webpage.

When developers think about broadcasting live from the browser, the immediate assumption is to use WebRTC. While WebRTC is amazing technology, server-side implementations are...lacking right now. We'll talk about a (totally hacky) way to get video from the browser via technology you're using today.

There are other ways to proxy live video from a browser to an RTMP endpoint, but what if we wanted to interact with that stream first? And not just interact writing obtuse ffmpeg filters, but just some good ol' HTML and CSS? Let's do that! We'll talk about how you can allow your streamers to go live directly from their browser using headless Chrome and ffmpeg.

In this lightning talk we will be pushing the boundaries of HTMl5 Canvas browser APIs. Join us while we do some experiments with video in the browser to see what’s truly possible. DISCLAIMER: No promises of cross-browser compatibility. Not for the faint of heart. Must be this tall to ride. Attending this lightning talk may result in serious injury or death. All participants must bring a life jacket.

Synchronizing multiple streams, particularly multiple live streams, and especially when the audio is critical too, can be incredibly difficult. How, then, could you build an experience where you have a few camera angles and you want a viewer to be able to seamlessly pick one? We'll walk through a hack technique that allows you to do just that without ever having to worry about synchronization.

Introduction to Remotion, a new library with which we can turn React code into MP4 videos, create our motion graphics programmatically and server-side render them. I give an overview of the priciples, the philosophy and of course we are going to code a video!

Synchronizing multiple streams, particularly multiple live streams, and especially when the audio is critical too, can be incredibly difficult. How, then, could you build an experience where you have a few camera angles and you want a viewer to be able to seamlessly pick one? We'll walk through a hack technique that allows you to do just that without ever having to worry about synchronization.