QUOTE(sws @ Jan 3 2011, 11:45 AM)
I went to astro hd setting and the max I can set is 1080i. Why not 1080p? What's the different?
1080i is the broadcast standard.
From Wikipedia, the free encyclopedia
The frame rate can be implied by the context, while the field rate is generally specified after the letter i, such as "1080i60". In this case 1080i60 refers to 60 fields per second or 30 frames per second. The European Broadcasting Union (EBU), prefers to use the resolution and frame rate (not field rate) separated by a slash, as in 1080i/30 and 1080i/25, likewise 480i/30 and 576i/25.[1] Resolutions of 1080i60 or 1080i50 often refers to 1080i/30 or 1080i/25 in EBU notation.
1080i is directly compatible with CRT-based HDTV sets and is displayed natively in interlaced form, but must be deinterlaced and often scaled for display on modern progressive-scan LCD and plasma TV sets. Depending on the television's video processor the resulting video quality may vary.
All UK HD channels on satellite and terrestrial platforms including BBC HD and ITV1 HD broadcast in this format. In the United States, 1080i is the preferred format for CBS, NBC and The CW, though some affiliates (especially those that broadcast two digital subchannels in HD) do broadcast in 720p. Fox and ABC/ESPN broadcast in 720p.