upchunk

Overview: Reimagining the Video Guestbook Building a video guestbook involves more than just capturing footage; it requires a seamless bridge between local browser hardware and cloud-based processing. Originally built with Next.js and Supabase, this project captures three-second clips at tech conferences to help attendees let their guard down. Migrating this stack to Laravel demonstrates how modern PHP frameworks can simplify complex JavaScript-heavy applications through better abstraction and integrated tooling. Prerequisites To follow this walkthrough, you should have a solid grasp of **React** and **PHP**. Familiarity with browser-native APIs like `MediaRecorder` is helpful. You will also need a Mux account for video transcoding and the Composer package manager installed on your local machine. Key Libraries & Tools - Inertia.js: Bridges the gap between a Laravel backend and a React frontend without building a dedicated REST API. - MediaRecorder API: A native browser feature used to capture audio and video streams. - upchunk: An open-source library from Mux that handles large file uploads by splitting them into manageable chunks. - Laravel Wayfinder: A package providing type safety for routes between PHP and JavaScript. - Laravel Prompts: A tool for creating beautiful, interactive CLI inputs during installation. Code Walkthrough: Recording and Chunking Capturing video begins with the MediaRecorder API. We request camera access and pipe the resulting stream into a recorder instance. In a React environment, we store the incoming data "chunks" in state until the recording stops. ```javascript // Capturing chunks into React state const onDataAvailable = (event) => { if (event.data.size > 0) { setChunks((prev) => [...prev, event.data]); } }; // Assembling the final blob const blob = new Blob(chunks, { type: 'video/webm' }); const file = new File([blob], "guestbook-entry.webm"); ``` Once the file exists, upchunk takes over. This prevents upload failures on flaky conference Wi-Fi by sending data in small pieces. It tracks progress via callbacks, allowing you to update a progress bar in real-time. ```javascript import * as UpChunk from '@mux/upchunk'; const upload = UpChunk.createUpload({ endpoint: uploadUrl, // Pre-signed URL from Mux file: file, chunkSize: 5120, // 5MB chunks }); upload.on('progress', (progress) => { console.log(`Upload is ${progress.detail}% complete`); }); ``` Syntax Notes: Inertia and Type Safety The migration significantly reduces boilerplate. Instead of managing complex state and API fetching in Next.js, Laravel’s Inertia.js adapter lets you pass data directly from a controller to a React prop. Using Laravel Wayfinder adds another layer of polish by generating TypeScript definitions for your PHP routes. This means if you change a route in `web.php`, your frontend build will break if the reference isn't updated, eliminating "string-based" routing bugs. Tips & Gotchas Video transcoding is **asynchronous**. Never expect a video to be playable immediately after an upload finishes. Always implement a webhook listener to receive the `video.asset.ready` event from your provider. For real-time UI updates without the overhead of WebSockets, utilize **Server-Sent Events (SSE)**. It is a simpler, one-way communication channel where the server pushes updates to the client, which is perfect for notifying a user that their video is processed and ready for sharing.