Video Quality :Channel 1

I have helped set up XBMC on a friend's laptop which was connected to an LCD TV via HDMI and I am not sure if the video quality is as good as it should be. This may be due to the quality of the "Silent Witness" episode we put on through channel 1 but I want to make sure there is nothing else I can do to improve the picture which was quite pixellated. Below are the graphics attributes of the laptop. the TV is LCD and fairly a new name brand but I have no other details. XBMC is in default settings

Adapter Type: Intel® Graphics Media Accelerator HD
Chip Type: Intel® Graphics Media Accelerator HD (Core i3)
DAC Type: Internal
Adapter String: Intel® Graphics Media Accelerator HD
Bios Information: Intel Video BIOS

Total Available graphics Memory: 1303 MB
Dedicated Video Memory: 64 MB
System Video Memory: 0 MB
Shared System Memory: 1239 MB