The highest video resolution supported by the Lumix DMC-TZ56 is 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels camera, which is the most common video resolution supported by digital cameras of a comparable age and type to the Lumix DMC-TZ56. 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 resolution is actually the best supported video resolution across all digital cameras of a similar spec and age to the Lumix DMC-TZ56.
The worst supported video resolution amongst similar types of digital camera is 320 x 240 pixels.