hey i was wondering if the 1080i or 1080p on a Philips Dvd player really matters if i am playing Divx DVD's. Well, does the dvd player improve/upconvert the quality of an .avi dvd? Also what's better a 1080i or 1080p or an hd dvd player?
Originally posted by leej614: hey i was wondering if the 1080i or 1080p on a Philips Dvd player really matters if i am playing Divx DVD's
no it doesn't,because your file won't be 1080i or 1080p
Quote:Well, does the dvd player improve/upconvert the quality of an .avi dvd?
Yes it will if its a upconverting DVD Player
Quote:Also what's better a 1080i or 1080p or an hd dvd player?
hd-dvd is dead blu-ray won the format war. hd-dvd and blu-ray have the best picture quality but you have to have a hd-dvd or a blu-ray store bought dvd to notice the difference.1080p is a little sharper than 1080i
Quote:1080i is a shorthand name for a category of video modes. The number 1080 stands for 1080 lines of vertical resolution, while the letter i stands for interlaced or non-progressive scan. 1080i is a high-definition television (HDTV) video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal resolution of 1920 pixels and a frame resolution of 1920 × 1080 or about 2.07 million pixels. The frame rate in hertz can be either implied by the context or specified after the letter i. The two frame rates in common use are 25 and 30 Hz, with the former (1080i25) generally being used in traditional PAL and SECAM countries (Europe, Australia, much of Asia, Africa), and the latter (1080i30) being used in traditional NTSC countries (e.g. United States, Canada and Japan). Both variants can be transmitted by both major digital television formats, ATSC and DVB. The European Broadcasting Union (EBU), prefers to use the resolution and field rate separated by a slash, as in 1080i/30 and 1080i/25, likewise 480i/30 and 576i/25.
1080i is directly compatible with CRT-based HDTV sets. 1080i is compatible with newer 720p- and 1080p-based televisions but must be deinterlaced first in order to be displayed on those sets.
Due to revision of the NTSC format when color became available, the frame rate of actual 1080i broadcasts is usually 0.1% slower than is implied. For example, a 1080i30 or "30 Hz" transmission actually displays about 29.97 frames each second. Both the straight 24/30/60 and 23.976/29.97/59.94 frequencies are supported by current standards.
Progressive format 1080p50 or 60 is foreseen as the future broadcasting standard for production[1].
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Quote:1080p is the shorthand name for a category of display resolutions. The number "1080" represents 1,080 lines of vertical resolution,[1] while the letter p stands for progressive scan (meaning the image is not interlaced). 1080p is considered an HDTV video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal resolution of 1920 pixels. This creates a frame resolution of 1920×1080, or 2,073,600 pixels in total. The frame rate in Hertz can be either implied by the context or specified after the letter p, such as 1080p30, meaning 30 Hz.
1080p is sometimes referred to in marketing materials as "Full High-Definition". However, 2K/4K digital cinema technology is commercially available, and ultra-high definition video is in the research phase.
In addition to the meaning of 1080p as a display resolution, 1080p is also used to describe video equipment capabilities. Use of 1080p and the closely related 1080i labels in consumer products may refer to a range of capabilities. For example, video equipment that upscales to 1080p takes lower resolution material and reformats it for a higher resolution display. The image that results is different from the display of original 1080p source material on a native 1080p capable display. Similarly, equipment capable of displaying both 720p and 1080i may in fact not have the capability to display 1080p or 1080i material at full resolution. It is common for this material to be downscaled to the native capability of the equipment. The term "native 1080p capable" is sometimes used to refer to equipment capable of rendering 1080p fully.
Quote:Progressive or noninterlaced scanning is a method for displaying, storing or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to the interlacing used in traditional television systems where only the odd lines, then the even lines of each frame are drawn alternatively (each image now called a field) are drawn.
The system was originally known as "sequential scanning" when it was used in the Baird 240 line television transmissions from Alexandra Palace, England in 1936. It was also used in Baird's experimental transmissions using 30 lines in the 1920s.
i cant remember where i got the text above...sry i had it saved in a .txt file and i just can't remember its source.....probably due to the lack of sleep......anyway you should really swallow down all that info epically the link, read it, it'll make things a lot clearer for you....then if you have specific questions you can go ahead and ask them:)
in short 1080p is better but 1080i is used more often by a long shot:)
