Investigators warn that if you receive an .mp4 file, it may not be the "original" proprietary format from the camera. Conversion can sometimes drop frames or distort the image, so it is often better to seek the original raw file for legal evidence.

These cameras typically capture video at 2560 x 1440 pixels , often referred to as QHD or 2K resolution.

For a breakdown of features like resolution and night vision, CCTV Security Pros offers a guide on selecting quality systems.