The first, called sec is a number in seconds, and the second called showMilliSeconds is a boolean set to true that determines whether to include milliseconds in the output. Starting from top to bottom, each function does the following: Create a file called VideoFilePicker.js in your components folder and add the following to it:Ĥ6 export copy
This rather intuitive component will simply allow the user to select and display a desired video file from their computer. For styles relevant to our app, copy the styles in this codeSandbox link to your styles/global.css file. To clearly understand these components that form the building blocks, we would give a brief description of each, and where necessary, we would create the files that would house their specific logic and update their contents as needed.Īt the root of your project, create a folder called components. Our application will consist of the moving parts shown below: We use its setHeader method on the response object to include the COOP and COEP headers. This function receives a context object which contains several things, but the most important is the request and response objects. In the code above, we defined and exported a getServerSideProps function, which will run on the server-side each time we request this page. Update your pages/index.js file with the following: The Next.js framework provides us with several ways to do server-side-related stuff within our app. To set these response headers, we will need a server. Doing this involves setting the popular COOP(cross-origin-opener-policy) and COEP(cross-origin-embedder-policy ) headers on our main document. Instead, they are isolated separately, each maintaining its unique browsing context. This state ensures that our website and cross-origin assets no longer share the same browsing context.
To avoid this, any web page that needs access to these APIs needs to tell the browser explicitly it needs access to these special APIs, which will prompt the browser to put the web page in a special state known as cross-origin-isolated. ffmpeg.wasm uses this API to enable the web assembly threads spawn by its submodule to read and write to memory while performing its media manipulation.īy default, these web APIs are disabled for all web applications by most web browsers because they can be used maliciously by other cross-origin assets or windows in the same browsing context to perpetuate dangerous attacks. It is worth noting that the ffmpeg.wasm package uses some pretty new and Advanced web APIs, one of which is SharedArrayBuffer.
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