Question:

I am working on an Angular project (version 18.2.3) where I use ffmpeg.wasm to trim videos and extract frames. However, when trying to load FFmpeg, I am encountering the following error in the console:

Error loading FFmpeg: ReferenceError: SharedArrayBuffer is not definedenter image description here

Below is the code that initializes FFmpeg and attempts to load it: 

export class VideoEditorComponent implements OnInit {
  ffmpeg = createFFmpeg({ log: true });
  isPlaying = false;
  frameDataArray: Uint8Array[] = [];
  frameIndex = 0;

  async trimAndExtractFrames(): Promise<void> {
    try {
      // Load FFmpeg
      await this.ffmpeg.load();
      console.log("FFmpeg loaded successfully");
    } catch (error) {
      console.error("Error loading FFmpeg:", error);
    }
  }
}

I have tried to troubleshoot the issue but am unsure how to proceed.

The error seems related to SharedArrayBuffer, which I understand is required for performance improvements in multi-threading for web applications.

I have checked my ffmpeg.wasm setup, and it works fine in a plain JavaScript application.

Ensured that my Angular application is correctly serving the WebAssembly files.

Looked into setting up the appropriate HTTP headers for Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy, but I am unsure if I have done it correctly.

My questions:

• How do I resolve the SharedArrayBuffer is not defined error in Angular?
• Is there a specific setup required for using SharedArrayBuffer in Angular with WebAssembly applications like FFmpeg?
• How can I ensure that the necessary HTTP headers are configured correctly in my Angular project to support this?

Additional information:

• Angular version: 18.2.3
• ffmpeg.wasm version: Latest (installed via npm)
• Browser: Chrome 100+