The Canon SX610 HS supports a maximum video resolution of 1920 x 1080 pixels. That's over two times the video resolution of a 1280 x 720 pixels camera, which is the most common video resolution supported by recently released similar spec digital cameras. In addition, this camera support a video resolutions of 640 x 480 pixels and 1080 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.
This camera's video resolution (1920 x 1080 pixels) is actually the best supported video resolution across all cameras that have been available for around the same time as the SX610 HS.
The worst supported video resolution amongst similar types of camera is 640 x 480 pixels.