Vcam Tweak High Quality ((link)) <FREE HOW-TO>

Windows limits "webcams" to 1080p by default. Remove it:

On jailbroken iOS devices, "VCAM" refers to a specific system tweak that overrides the camera feed with a video file. This is often used for debugging or privacy. To achieve high quality here, you must ensure the source video file (e.g., virtual.mp4 ) is encoded at high bitrate and matches the resolution expected by the target app. Similarly, Android virtual camera tools require you to place a video file in a specific directory and ensure its resolution matches the target app's preferred display settings. vcam tweak high quality