Here are a few optimizations and alternative approaches to improve performance:

1. Optimize Image Processing

• Instead of modifying all pixels in every frame, only process areas that change significantly.
• Use OffscreenCanvas for better performance in Web Workers.

2. Reduce Read/Write Operations

• getImageData and putImageData are costly. Try using WebGL (three.js or pixi.js) for GPU-accelerated processing.

3. Canvas Size & Scaling Fix

• Your drawImage function uses (0,0, 3840,1280), but getImageData uses (0,0, 1920,1280), causing distortion.
• Ensure both use the same dimensions.

4. Use a Shader Approach

• WebGL with fragment shaders can efficiently apply the mask directly on the GPU instead of processing pixels manually.

Please Brother Let Me Know If This Helps.