What increase in horizontal resolution is possible if a bandwidth of 5 MHz is used in a video signal?

The horizontal resolution in a video signal can be estimated using the formula that relates bandwidth to resolution, where the bandwidth in MHz typically allows for a resolution of about 10 to 12 times the bandwidth in kilohertz. Therefore, with a bandwidth of 5 MHz, the horizontal resolution could be increased to approximately 500 to 600 pixels. This is a general approximation and can vary based on the specific modulation and encoding techniques used.