High Def Forum
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420p, 720p, 1080p???

04-01-2005, 07:59 PM
I/m watching the game on ESPNHD (73 Directv) which is being broadcast in HD but is says it is in 720p? I thought true HD is shown in 1080p, am I correct? Also what does 420p, 720p, and 1080p means anyway?

04-01-2005, 08:02 PM
See DTV Formats and How That Relates to HDTV (http://www.highdefforum.com/showthread.php?t=3756)

You meant to say 480p, btw.


04-01-2005, 08:24 PM
Thanks for the info but I'm still :confused:
is there a difference in my tv pic if something is broadcast in 720p or 1080i. The game I'm watching is in 720p but HDNet is in 1080i, what's the difference? Thks

Both 1080i and 720p are both considered HDTV formats. ABC, FOX and ESPN has chosen 720p and just about everybody else has chosen 1080i. The two formats are generally considered equal, except that some people claim 720p is better for fast motion like sports. Watching NFL football I can not see the difference. Apparently, you don't see a difference either.

04-02-2005, 05:43 AM
lbmore33....I can understand your frustration....but there is NOTHING you can do because certain broadcast choose 720p. I feel that 1080 has better resolution (if you will) than 720p, BUT 720p is still FAR SUPERIOR to 480p.

04-02-2005, 06:41 PM
Anyone who's watching 720p/60 on a 1080i/30 display doesn't see the advantages, because you've dropped half the frames & added interlacing artifacts.

1080 has better spatial resolution, but half the temporal resolution (framerate). It's also interlaced instead of progressively scanned.