I Built a 4K Screen Recorder That Runs Entirely in the Browser

说明与用途

完全在浏览器中运行的 4K 屏幕录制器，无需外部软件。

问题

Need to record high‑resolution screen (4K) directly in the browser without external software.

结果

A fully client‑side 4K screen recorder that works in modern browsers, eliminating the need for external software.

工作流

• 1. Request screen capture via navigator.mediaDevices.getDisplayMedia with video: {frameRate: 30, width: 3840, height: 2160}
• 2. Create a MediaRecorder instance with MIME type video/webm; codecs=vp9
• 3. On dataavailable events, push blobs into an array
• 4. When recording stops, concatenate blobs into a single Blob
• 5. Create a download link or upload the file to a server or cloud storage

证据

I Built a 4K Screen Recorder That Runs Entirely in the Browser — Here's How

来源