720p Or 1080i

[Marybelle Bailey]

1080ialso known as BT.709) is a combination of frame resolution and scan type. 1080i is used in high-definition television (HDTV) and high-definition video. The number "1080" refers to the number of horizontal lines on the screen. The "i" is an abbreviation for "interlaced"; this indicates that only the even lines of each frame, then only the odd lines, are drawn alternately, so that only half the number of lines are ever updated at once. A related display resolution is 1080p, which also has 1080 lines of resolution; the "p" refers to progressive scan, which indicates that each full frame appears on the screen in sequence.

The term assumes a widescreen aspect ratio of 16:9 (a rectangular TV that is wider than it is tall), so the 1080 lines of vertical resolution implies 1920 columns of horizontal resolution, or 1920 pixels 1080 lines. A 1080i screen has a total of 2.1 megapixels (2.1 million pixels) and a temporal resolution of 50 or 60 interlaced fields per second. This format is used in the SMPTE 292M standard.

Within the designation "1080i", the i stands for interlaced scan. Each frame of 1080i video consists of two sequential fields of 1920 horizontal and 540 vertical pixels. The first field consists of all even-numbered TV lines and the second all odd numbered lines. Consequently, the horizontal lines of pixels in each field are captured and displayed with a one-line vertical gap between them, so the lines of the next field can be interlaced between them, resulting in 1080 total lines.[1]

Worldwide, most HD channels on satellite and cable broadcast in 1080i. In the United States, 1080i is the preferred format for most broadcasters, with Warner Bros. Discovery, Paramount Global, and Comcast owned networks broadcasting in the format, along with most smaller broadcasters. Only Fox- and Disney-owned television networks, along with MLB Network and a few other cable networks, use 720p as the preferred format for their networks; A+E Networks channels converted from 720p to 1080i sometime in 2013 due to acquired networks already transmitting in the 1080i format. Many ABC affiliates owned by Hearst Television and former Belo Corporation stations owned by TEGNA, along with some individual affiliates of those three networks, air their signals in 1080i and upscale network programming for master control and transmission purposes, as most syndicated programming and advertising is produced and distributed in 1080i/p, removing a downscaling step to 720p. This also allows local newscasts on these ABC affiliates to be produced in the higher resolution (especially for weather forecasting presentation purposes for map clarity) to match the picture quality of their 1080i competitors.

Some cameras and broadcast systems that use 1080 vertical lines per frame do not actually use the full 1920 pixels of a nominal 1080i picture for image capture and encoding. Common subsampling ratios include 3/4 (resulting in 1440x1080i frame resolution) and 1/2 (resulting in 960x1080i frame resolution). Where used, the lower horizontal resolution is scaled to capture or display a full-sized picture. Using half horizontal resolution and only one field of each frame (possibly with added anti-alias filtering or progressive capture) results in the format known as qHD, which has frame resolution 960x540 and 30 or 25 frames per second. Due to the chosen 16x16 pixel size for a compressed video packet known as a macroblock as used in ITU H.261 to H.264 video standards, a 1080-line video must be encoded as 1088 lines and cropped to 1080 by the de-compressor. The 720-line video format divides perfectly by 16 and therefore does not require any lines to be wasted.

Hi ya - Ive just put together a HTPC using an Intel 3570K CPU, I want to use the integrated HD4000 graphics, but I cannot get it to display a proper 1920x1080 50Hz interlaced signal on my Panasonic HDTV. This TV only has component inputs, but I am using a HDMI-> component adapter.

I currently use a media player and digital set top box - both those display flawlessly through this converter, so Im scratching my head as to why the intel driver cant do the same. Im creating a custom resolution, using the advanced options.

We recommend using straight cables instead of converters/adapters. Sometimes those converters/adapters may not provide all the features the original port can provide. Please check this link for more information about display resolutions -022544.htm -022544.htm

The thing that's interesting is that screenshot is taken from my MacBook Pro which has an i7 with HD 3000 graphics too. The MacBook Pro is connecting to the TV in exactly the same way as the HTPC and like the HTPC did not have the 1080i resolution available. The fix for the MacBook was to use a program called SwitchResX, which generated the screenshot above. So now the MacBook displays 1080i on my TV.

EDIT: With a bit of testing I have discovered that the Thunderbolt/DisplayPort on the MacBook Pro only works with the AMD Radeon HD 6750M card. Either way I was still forced to manually add the 1080i resolution so why can't this be achieved with the Intel Drivers

The problem seems to be that you can't change the Horizontal Scan Rate or the Pixel Clock and therefore you cannot get the correct configuration for 1080i. Please note that I have tried the Basic Settings tab and that didn't work either.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

It was working 100% on my old Graphics Card (GTX1060), and even worked on my Raspberry Pi with Linux and Kodi, but now I have a 5700XT Red Devil and the Adrenaline Drivers just don't seem to get it working.

Maybe the solution is, that Win10 doesn't have my SONY TV properly recognized with it's display modes, and the NVIDIA card didn't care about the Windows Display Driver data and instead addressed the TV properly, but the AMD card doesn't do that. I don't know.

Thank you, I already tried, that, and it looked the same way distorted. also, the EDID says it can do both, 50 or 60Hz, which as I wrote I confirmed myself using a Raspberry Pi with Debian Linux, LibreELEC with Kodi and my own GTX1060 card, which all had zero problems with this old LCD TV.

Maybe i need a better "Displaydriver" for the monitor in Windows. I made a monitor.ini from the EDID and installed that, but that was probably not it. When i go to the Hardware Monitor, and try to update drivers from the same ini file, Windows tells me it already has the best (microsofts own) driver for it, and also it needs a monitor.sys file. Anyone know how to make such a file?

I have now successfully installed my own monitor.inf driver with the EDIT info from the LCD-TV. (despite that it worked flawlessly with an Nvidia card). and I still can not get 1080i to work with the 5700XT/AMD driver. So it is definitely a bug in the AMD driver... I wrote a bugreport for that, and if I dont get a helpful answer within a week, I will sell this otherwise nice gfx card again RX 5700XT Red Devil. too bad.

I am experiencing the same with an older Bravia TV as well. Model KDL-V26XBR1. I am using Linux. I felt compelled to reply to this thread because I can't seem to find anything else about this bug. Intel GPU is able to set to 1080i. I am using an RX 550 now and it is only presenting 1280x720 as the highest resolution.

one more thing... since you are on Linux, maybe you can fix the issue despite the bad drivers. On my Raspberry Pi I used to add some line to config.txt (might have different name/location depending on your linux distro) to get 1080i working on my SONY TV. Here's the 2 links with some info about that.

Then this episodes are recognized by Sonarr as SD. I configured this series to download any quality then episodes are downloaded but fail import because Sonarr expect SD but episode its recognized as 1080p.

Release name: Presunto culpable 1x01 Vrtigo [HDTV 1080i AVC MP2 2.0 Sub][GrupoHDS] [spanish]

File name: Presunto culpable 1x01 Vertigo [HDTV 1080i AVC MP2 2.0 Sub][GrupoHDS].mkv

Release name: Presunto culpable 1x02 Culpabilidad [HDTV 1080i AVC MP2 2.0 Sub][GrupoHDS] [spanish]

File name: Presunto culpable 1x02 Culpabilidad [HDTV 1080i AVC MP2 2.0 Sub][GrupoHDS].mkv

I think the problem could be down to the fact the series has had several different iterations, some was broadcast online only and some with a different name; senior vs junior. Therefore depending how you count the latest season is 7 or 11.

Hello. I don't see my issue but if it was previously addressed my apologies. I have a 16 yr old Pioneer plasma which came bundled with a Media Receiver that has an extra input for HDMI. My TV displays in 1080i and 720P only. Will the Roku Ultra work with, or be compatible with, my TV/Media Receiver combo? Thanks in advance.

UPDATE UPDATE UPDATE! I got it to WORK! The Pioneer tech guy emailed me back, skeptical that this device would NOT work on my old plasma..and he was/is/ ultimately right! I had to ENABLE Input 1 on my Media Receiver. Never realized that, by DEFAULT it was DISABLED. I enabled, plugged in the Roku Ultra, and it's working! i have the screen now!

As a non-tech person I am trying to get access to BroadwayHD for my Mom, also a non-tech person. She has a 10-year old Sony TV with those red, white and yellow connectors and it has a an HDMI connection for red and white connectors. Does not seem to have the newer HDMI ports. BroadwayHD says we need Roku version 5.5 or later. Help! Is Roku Express + the right device, will it work with this older Sony and does it run Roku version 5.5. Apologies for this inartful, nontechnical presentation of the question.

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