Video resolution in a dash cam refers to the number of pixels that are captured in a video recorded by the camera. The resolution is typically measured in terms of the number of pixels in the horizontal and vertical dimensions of the video, such as 1920 x 1080 or 1280 x 720.

Higher video resolution means that the video will be sharper and more detailed, but it may also require more storage space on the camera's memory card and may require a more powerful processor to handle the increased data.

Dash cams typically have a range of video resolution options, with 1080p (1920 x 1080) being a common standard. However, some dash cams may have higher resolutions such as 2K or 4K.

The video resolution on a dash cam is important because it determines the level of detail and clarity that can be captured in a video; and can provide better evidence in the event of an accident or other incident on the road.

For example, a higher resolution can make it easier to read license plates, identify the make and model of vehicles, and capture important details such as road signs or traffic signals.

Additionally, a higher video resolution can also help to provide better visibility in low-light conditions or at night, as it can capture more light and detail in the image.

The best video resolution for a dash cam depends on your specific needs and preferences. A common and widely recommended video resolution for a dash cam is 1080p (1920 x 1080), which provides good image quality and detail while keeping the file size manageable.

However, some dash cams can record at higher resolutions such as 2K or 4K, which can provide even better detail and clarity, but may also require more storage space and processing power.

When choosing a video resolution for your dash cam, you should consider factors such as the level of detail you need to capture, the lighting conditions in which you typically drive, and the available storage capacity on your dash cam's memory card.