The highest video resolution supported by the Olympus VH-520 is 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels camera, which is the most frequently found video resolution supported by Compact camera digital cameras that were launched around the same time as the VH-520. A video resolution of 1920 x 1080 pixels is equivalent to Full HD video. You will require a Full HD TV or better to appreciate this level of detail.
This camera's video resolution (1920 x 1080 pixels) is actually the best supported video resolution amongst all cameras of a comparable spec and age to the VH-520.
A 320 x 240 pixels video resolution is the worst supported video resolution across comparable types of camera.