The Canon 310 HS supports a maximum video resolution of 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels digital camera, which is the most frequently found video resolution supported by digital cameras of this age and spec. 640 x 480 pixels is also supported by this Canon camera. In addition, this camera support a video resolutions of 320 x 240 pixels and 1280 x 720 pixels. 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.
A 1920 x 1080 pixels video resolutions is in fact the best supported video resolution amongst all low megapixel digital cameras that were released more than two years ago.
A 320 x 240 pixels video resolutions is the worst supported video resolution amongst comparable types of camera.
What does "video resolutions" mean?