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.
Most forensic video experts recommend MP4 (using H.264 or H.265 codecs) for a balance of quality and small file size.
Higher resolution means larger file sizes. To manage this, many systems use advanced compression like H.265 to keep storage costs manageable. MP4 File Format in Surveillance
A camera is a popular choice because it offers nearly double the resolution of standard 1080p (2MP), providing a significant leap in clarity for identifying faces and license plates.
Expert tests on YouTube show that 4MP cameras perform well in both day and night conditions, often featuring AI-driven full-color night vision.
For a breakdown of features like resolution and night vision, CCTV Security Pros offers a guide on selecting quality systems.