The DMC-TZ55 supports a maximum video resolution of 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 cameras that have been on the market for around the same time as the DMC-TZ55. 640 x 480 pixels is also supported by this Panasonic camera. In addition, this camera supports a video resolutions of 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 across all comparable spec cameras that were released more than two years ago.
Across similar types of digital camera the worst supported video resolution is 320 x 240 pixels.