The first specification and images of a Freesat HD set-top box have been leaked on the Digital Spy forums.

Pictures also show the full-colour electronic programme guide and interface used for the Humax Foxsat-HD product.

It is the first information to become public about a box ahead of the launch of the non-subscription satellite service backed by the BBC and ITV.

An image of a product brochure contains a feature list including compatibility with MPEG-4, MPEG-2 and AVC/H-264; simultaneous playing of video over HDMI, component outputs and SCART; and support for output resolutions of 1080i, 720p, 576p and 576i; an Ethernet connection.

The box is listed as measuring 280mm wide by 45mm high by 200mm deep, and weighing 1.5kg.

Humax declined to comment on the details.