Originally posted by powerfulone1987
can someone explain this 1080p stuff and what's the difference between different ones and what they mean?is it comprehensible.....
1080p>>>>1080i
here is a link for info
http://electronics.howstuffworks.com/dtv.htm
1080i is 60 fields per second to give you 30 frames per second where 1080p would be 60 frames per second. A field of course is only the odd or even lines where the frame would be all 1080 lines of resolution.
1080"i' stands for;
Interlaced video (NTSC/ATSC, etc.) delivers half the signal (image frames) at a time, conserving bandwidth. Bandwidth, linked to frequency response, is different from data rates for transmissions. A SD signal of ~6 MHz bandwidth has a data rate of ~12.5 Mbps. Use more, or more-efficient, digital compression and you can trim both storage space and data rate requirements.
1080"p" stands for;
With progressive digitally compressed delivery, 1/60-second full frames can be compressed more because each one is more similar to adjacent frames than time-separated 1/60-second interlaced fields (half-frames). Identical image segments can be removed and represented with less data. (Bandwidth is the frequency or frequency range where a signal's amplitude drops to about 0.7 from a reference.)
worst>----------------------------<best
480i, 480p, 540i, 540p, 720p, and 1080i, 1080p