1080p (19201080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen vertically;[1] the p stands for progressive scan, i.e. non-interlaced. The term usually assumes a widescreen aspect ratio of 16:9, implying a resolution of 2.1 megapixels. It is often marketed as Full HD or FHD, to contrast 1080p with 720p resolution screens. Although 1080p is sometimes informally referred to as 2K, these terms reflect two distinct technical standards, with differences including resolution and aspect ratio.
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1080p video signals are supported by ATSC standards in the United States and DVB standards in Europe. Applications of the 1080p standard include television broadcasts, Blu-ray Discs, smartphones, Internet content such as YouTube videos and Netflix TV shows and movies, consumer-grade televisions and projectors, computer monitors and video game consoles. Small camcorders, smartphones and digital cameras can capture still and moving images in 1080p resolution.
1080p50/p60 production format requires a whole new range of studio equipment including cameras, storage and editing systems,[6] and contribution links (such as Dual-link HD-SDI and 3G-SDI) as it has doubled the data rate of current 50 or 60 fields interlaced 1920x1080 from 1.485 Gbit/s to nominally 3 Gbit/s using uncompressed RGB encoding. Most current revisions of SMPTE 372M, SMPTE 424M and EBU Tech 3299 require YCbCr color space and 4:2:2 chroma subsampling for transmitting 1080p50 (nominally 2.08 Gbit/s) and 1080p60 signal. Studies from 2009 show that for digital broadcasts compressed with H.264/AVC, transmission bandwidth savings of interlaced video over fully progressive video are minimal even when using twice the frame rate; i.e., 1080p50 signal (50 progressive frames per second) actually produces the same bit rate as 1080i50 signal (25 interlaced frames or 50 sub-fields per second).[4][5][7]
In the United States, the original ATSC standards for HDTV supported 1080p video, but only at the frame rates of 23.976, 24, 25, 29.97 and 30 frames per second (colloquially known as 1080p24, 1080p25 and 1080p30). In July 2008, the ATSC standards were amended to include H.264/MPEG-4 AVC compression and 1080p at 50, 59.94 and 60 frames per second (1080p50 and 1080p60). Such frame rates require H.264/AVC High Profile Level 4.2, while standard HDTV frame rates only require Level 4.0. This update is not expected to result in widespread availability of 1080p60 programming, since most of the existing digital receivers in use would only be able to decode the older, less-efficient MPEG-2 codec, and because there is a limited amount of bandwidth for subchannels.
In June 2016, EBU announced the "Advanced 1080p" format[11] which will include UHD Phase A features such as high-dynamic-range video (using PQ and HLG) at 10 and 12 bit color and BT.2020 color gamut, and optional HFR 100, 120/1.001 and 120 Hz; an advanced 1080p video stream can be encoded alongside baseline HDTV or UHDTV signal using Scalable HEVC. The ITU-T BT.2100 standard that includes Advanced 1080p video was subsequently published in July 2016.
For material that originates from a progressive scanned 24 frame/s source (such as film), MPEG-2 lets the video be coded as 1080p24, irrespective of the final output format. These progressively-coded frames are tagged with metadata (literally, fields of the PICTURE header) instructing a decoder how to perform a 3:2 pulldown to interlace them. While the formal output of the MPEG-2 decoding process from such stations is 1080i60, the actual content is coded as 1080p24 and can be viewed as such (using a process known as inverse telecine) since no information is lost even when the broadcaster performs the 3:2 pulldown.[12]
Blu-ray Discs are able to hold 1080p HD content, and most movies released on Blu-ray Disc produce a full 1080p HD picture when the player is connected to a 1080p HDTV via an HDMI cable. The Blu-ray Disc video specification allows encoding of 1080p23.976, 1080p24, 1080i50, and 1080i59.94. Generally this type of video runs at 30 to 40 megabits per second, compared to the 3.5 megabits per second for conventional standard definition broadcasts.[14]
Several websites, including YouTube, allow videos to be uploaded in the 1080p format. YouTube streams 1080p content at approximately 4 megabits per second[16] compared to Blu-ray's 30 to 40 megabits per second. Digital distribution services like Hulu and HBO Max also deliver 1080p content, such as movies available on Blu-ray Disc or from broadcast sources. This can include distribution services like peer-to-peer websites and public or private tracking networks. Netflix has been offering high quality 1080p content in the US and other countries through select internet providers since 2013.[17]
AV equipment manufacturers have adopted the term Full HD to mean a set can display all available HD resolutions up to 1080p. The term is misleading, however, because it does not guarantee the set is capable of rendering digital video at all frame rates encoded in source files with 1920 X 1080 pixel resolution. Most notably, a "Full HD" set is not guaranteed to support the 1080p24 format, leading to consumer confusion.[18][19][20] DigitalEurope (formerly EICTA) maintains the HD ready 1080p logo program that requires the certified TV sets to support 1080p24, 1080p50, and 1080p60, without overscan/underscan and picture distortion.
Listening to and downloading unlimited songs for free has never been easier! With Snaptube, you can get access to millions of video songs without spending a dime. As a freely available song and video download app, Snaptube will certainly elevate your smartphone experience. It features an unlimited source of entertainment by integrating several video-sharing platforms. Therefore, you no longer have to switch between different apps. Simply download Snaptube on your Android device and start watching your favorite videos.
If you are a music lover, then you must already be familiar with youtube music. The Music Television also has an app for Android and iOS devices. You can browse songs and music videos on YouTube Music based on genres, playlists, and recommendations.
The video song app will give you access to the extensive music library. In this way, you can find songs of different languages and genres in one place. The app can also help you manage your music and create playlists. It has an aesthetically pleasing interface that supports numerous themes as well.
Getting video from the Internet to your TV used to be a difficult, costly procedure. That's no longer the case. googletag.cmd.push(function() googletag.display('div-gpt-ad-1449240174198-2'); ); Consumers have a large and growing number of options for watching digital videos downloaded or streamed from the Net, ranging from digital set-top boxes to Blu-ray players to video game consoles to Internet-connected TVs. However, one of the best choices has been Roku's line of digital media players, which are even more attractive now that the company has updated its line. Introduced three years ago, Roku's players are inexpensive, easy to use and simple to set up. The new models - collectively dubbed the Roku 2 - are smaller and more energy-efficient. The range of content available on them is among the broadest you'll find among digital media adapters. And the devices have a new trick: the ability to play casual games such as "Angry Birds" with a motion-sensing controller similar to the one with Nintendo's Wii game machine. Roku's first digital player was extremely limited. All it could do was play videos streamed from Netflix - a fact reflected in its original name: the Netflix Player. Roku quickly dropped the "Netflix" appellation and steadily added access to new Internet content providers-all while keeping the price of its players at $100 or less. Today, you can choose from some 300 "channels." You can now watch movies on Netflix or Amazon or TV shows hosted by Hulu. You can listen to music from digital music services such as Pandora and MOG, view photos you've uploaded to Flickr or Picasa or personal videos you've uploaded to Facebook. You can even watch live professional sports, including Major League Baseball and NHL hockey games and UFC fights. Roku also provides access to numerous international TV shows and movies, and even to private channels that can be set up by businesses or individual users. (adsbygoogle = window.adsbygoogle []).push(); There are still some notable gaps in its lineup. You won't find YouTube in Roku's channel store, for example. Nor will you find Vudu, the high-quality video streaming service. And the device doesn't include a Web browser that would allow you to access videos found on less popular websites but not in one of its channels. Still, Roku's channel list compares favorably to what you'll find on Apple TV box or on the typical Internet-connected TV. And the addition of games gives the Roku box digital content you can't find with Apple TV and many other digital media adapters. "Angry Birds" looks great on the Roku 2 and works relatively well once you get used to using a motion-sensing controller rather than a touch screen. Roku representatives say it's just the first of many high-quality casual games you'll be able to play on the Roku 2 box. The company's new controller - which only works with the Roku 2 players - should help it attract additional games. Shaped like its standard 8-button remote control, it adds motion detectors as well as two buttons specifically for playing simple games. Turned on its side, the new controller looks a bit like the gamepads used with older Nintendo consoles. To be sure, you won't be replacing your Wii or Xbox 360 with a Roku 2 anytime soon, if ever. Its game selection is sparse and unimpressive beyond "Angry Birds," consisting of a handful of simple, low-resolution, single-player card and dice games like poker and mah-jongg. But it could soon be a fun way to play on your big-screen TV the kinds of casual games that have become popular on smartphones. Content aside, the Roku 2 players are nice pieces of hardware. At little more than three inches square and less than an inch tall, the devices are even smaller than the pint-size Apple TV. Like the Apple TV, but unlike the Boxee Box, say, or the video game consoles, the Roku 2s are whisper-quiet and super-efficient, using less than 2 watts when streaming a high-definition movie. And their controller and interface are in the same vein as Apple TVs: simple, streamlined and much easier to use than your typical TV remote or game console. What makes the Roku 2 boxes particularly appealing are their prices. The lowest-end model costs just $60. The top-of the line model is $100, but includes "Angry Birds" and the new game controller, which is a $30 add-on for the other models. There are some ways in which the Roku 2 comes up short. One major and long-standing problem with the Roku players is that you can't search them easily. There's no search box in the Roku channel store nor on the Roku's 2 home page, so you may find yourself scrolling through dozens of channels to find the one you want. The devices also don't offer any way to search across different channels for a particular movie or TV show. Instead, you have to search within particular channels for videos, hoping that you picked the right channel to search. Unlike the Apple TV or some other digital adapters, the Roku players don't easily connect to computers or other devices on your network, so you generally can't stream movies or music to the players from such devices. So the new Roku 2 players aren't perfect. But if you're interested in getting Internet content on to your TV, they're a darn good choice. --- ROKU 2 DIGITAL MEDIA PLAYERS -Likes: Offer broad range of content; easy to use; inexpensive; quiet; energy-efficient; can play games -Dislikes: No way to search for particular channels or across channels for particular videos; no Web browser and no way to access content not available through existing channels; no easy way to access home videos or other content stored on home network; sparse selection of games -How much: $60 for HD model; $80 for XD model, which supports 1080p video; $100 for XS model, which includes "Angry Birds," game controller and USB port -Web: roku.com More information: Troy Wolverton is a technology columnist for the San Jose Mercury News. (c) 2011, San Jose Mercury News (San Jose, Calif.). Distributed by McClatchy-Tribune Information Services. 2ff7e9595c
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