While 1080i has 1080 lines of resolution, 720p has only 720 lines. The \"i\" and the \"p\" in these resolutions stand for interlaced and progressive scanning, respectively. While some customers will not notice a significant difference between the picture quality of 720p and 1080i, progressive scanning offers an objectively superior picture, especially on newer LCD or LED TVs built for higher resolutions and progressive scanning.
720p represents 720 lines of resolution scanned sequentially. In other words, all lines are scanned in progressively, providing a more detailed high definition video image compared to interlaced display technology of the same resolution. Progressive scanning reduces the need to prevent flicker by filtering out fine details, so spatial (sharpness) resolution is much closer to 1080i than the number of scan lines would suggest.
The 1080 and 720 in 1080p and 720p stand for vertical screen resolution, or height, in pixels. The more pixels there are in an image, the clearer it will be. As such, a screen resolution of 1920x1080 (two million pixels when multiplied) should appear twice as sharp as a resolution of 1280x720 (fewer than one million pixels). Meanwhile, the p in 1080p and 720p stands for progressive scanning, which updates full frame images more quickly than traditionally interlaced content.
HD DVDs contain 720p content and sometimes 1080p, while all Blu-ray discs contain 1080p content. Regular DVD quality can vary considerably, with some displaying content at a resolution lower than 720p, such as 480p. Moreover, there are still DVD players around that only carry support for up to 480p or 480i, meaning a viewer cannot get the full experience of any high-definition DVD they insert into the player.
Netflix typically streams at 720p, but with the release and expansion of what it calls \"Super HD,\" users are able to stream more and more content at 1080p quality with a high-speed internet connection. Apple TV allows users to choose between 720p and 1080p streaming. DirecTV displays a \"1080pHD\" logo on 1080p pay-per-view content, and all their latest DirecTV Cinema content is in 1080p. On YouTube and Vimeo, high quality videos often allow for 720p or even 1080p streaming.
Screen resolution can be especially important in video gaming. Because there are more pixels in 1080p, less anti-aliasing is required for a smooth visual experience. This means that 1080p will not only likely look better than 720p, but will lead to a better gaming experience overall, as anti-aliasing can slow down a console or computer.
Although Ultra HD 4K TVs are rapidly becoming standard, with their resolutions of 3,840x2,160, the truth is that for a long time to come it's HD content that's going to remain on top. Unfortunately, it's not that easy to decipher exactly what HD is, as it's not a single standard and you're likely to see a range of different standards quoted, with 720p, 1080i and 1080p all options. For example, the Now TV box uses a 720p stream, while Netflix can deliver 1080p content (and 4K if you've got the right type of TV). So, what are the real differences
The number used in each standard tells us how many pixels tall an image is. So a 720p image is 720 pixels high, while 1080i and 1080p images are both 1,080 pixels high. The reason for this convention is down to the old analogue TV system, where the standards were described by the number of lines high an image was: PAL TV was broadcast at a resolution of 576 lines.
What the standard doesn't tell you up front, is the width of the image. All HD standards assume that the picture has an aspect ratio of 16:9. In other words, for every 16 horizontal pixels, you have nine vertical ones. To work out the conversion, you divide the number of vertical pixels you have by nine and multiply by 16 to get the width. This means that a 720p image is 1,280 pixels wide (a resolution of 1,280x720 pixels and a total of 921,600 pixels), while a 1080i and 1080p image are both 1,920 pixels wide (a resolution of 1,920x1,080 pixels, a total of 2,073,600). This might make 1080i and 1080p sound the same, but there's a crucial difference between them.
The difference between 1080i and 1080p is down to the letter, where 'i' means interlaced and 'p' means progressive. With a progressive picture, you get all 1,920x1,080 pixels all at once. With an interlaced image, the picture is split into two: the first has the full horizontal resolution, but only carries the even lines; the second has the odd lines. Effectively, you need half the bandwidth by sending half of the information (1,036,800 pixels vs 2,073,600 pixels). Interlacing is largely used for TV broadcasts for this very reason.
Another thing to consider is that nearly all new HDTVs you can buy today are capable of de-interlacing 1080i video signals so they look just like 1080p, which makes it even harder to notice a difference.
These days, 1080p and 1080i are old hat compared to the much more publicized 4K format available with most new HDTVs (often classed as UHD TVs). With 4K resolution, picture clarity is sharper and more colorful than ever. Consumers can also enjoy sitting quite a bit closer to their living room TV without noticing any sort of distortion in the image. This is because 4K TVs display close to four times the number of pixels as a standard 1080p set. Simply put, the more pixels on display, the better the picture quality. Better yet, most UHD sets will also upconvert a standard HD image, making your regular HD sources look closer to actual 4K.
Some recordings, such as in HDV video camcorders, and many HD TV signals are stored or broadcast at 1440 x 1080i. This is another bit of trickery used to reduce the amount of data needed to record or broadcast the footage. The pixels in the video are oblong (non-square). The pixel aspect ratio is 1.33:1. Essentially this means the pixels are stretched horizontally to fill a 1920 x 1080 frame during playback. This is hardly noticeable to the average viewer. You may also see 960 x 720 pixel video from some cameras. Again these employ non-square pixels to generate a 720p image.
Nearly all modern video cameras (PAL UK models) can do 1080p. Some but not all will do 1080i as well. In essence the choice of camera depends largely on how much you want to spend and what type of activity you want to film.
Common bitrate options on professional cameras include 35Mbs, 50Mbs and 100Mbs. However, not all frame rates can be recorded at all of those data rates. e.g. 35Mbs works with 1080p25 but 35Mbs may not be an available option for 1080p50.
iPhone 4 records 16:9 aspect ratio 1280x720p video via the main camera at a nominal 30 frames per second. However, Apple devices tend to record at an irregular frame rate which causes Adobe Premiere to choke on the files.
V-1HD SYSTEM PROGRAM VER.2.0System Program Version 2.0 is a free update for the popular V-1HD HDMI video switcher including the companion Remote Control Software version 2.0 for Windows & MacOS. Version 2.0 expands Picture in Picture effects with a new 1/3 sizing option. Turn on Auto Scan for hands free switching. Numerous user interface improvements include viewing audio level meters on the multi-viewer, panel lock and quickly reset system values by holding the WIPE button.Videography and WebcastThe compact V-1HD is an ideal portable solution switching video and action cameras for webcasts or recording.Visual PerformanceThe V-1HD effortlessly mixes high resolution computer and HD camera sources and gives visual artists unique filter effects and transition performance features including Roland's legendary \"TRANSFORMER\" buttons.EducationThe V-1HD is an easy to use tool for students of all ages to broadcast or record sporting events, performances and other activities around campus.Event and MeetingsThe V-1HD is ideal for presentations in conference rooms or at live events allowing for switching of video from different sources such as computers and video cameras.INPUT- The V-1HD has 4 HDMI input connectors compatible with a variety of equipment.- The V-1HD supports 1080p/1080i/720p video resolutions.- Devices outputting the same resolution can be input regardless of what type of device they are. - HDTV Camera - Action Camera - PC/Mac - Smart Phone/Tablet - Blu-ray Disc Player- Both progressive and interlace signals can be input allowing for both 1080i and 1080p signals to be used at the same time.- Video signals input from a PC are accurately displayed thanks to progressive signal processing.- HDCP is supported for input of copy protected content from devices such as Blu-ray disc players.OPERATION- Large back-lit buttons for intuitive video switching even in low light conditions. Red lit buttons indicate the current source being output. Green lit button is for the video that will be output on the next transition. If a button is not lit, then there is no video being input to that channel.- Broadcast style Preview/Program switching for professional results.- The TRANSFORMER buttons can be used for switching the video instantly or applying effects. There are 11 options for the operation of the buttons.- There are three buttons for applying transition effects, CUT, MIX (4 types) and WIPE (30 types).- Auto scan function switches the video automatically across the four video inputs.- By using the T-Fader and BPM SYNC button, you can deliver visuals synced to a music performance.- You can save or recall up to 8 presets using the MEMORY button.- Use the FREEZE button to temporarily pause the incoming video.- Output fade function makes the output video fade to black or white.EFFECTS- Two-screen composition is possible. - Picture-in-Picture - Split - Chroma Key/Luminance Key- Use knob A and knob B to apply effects to A bus and B bus respectively. Many of the visual performance functions made popular by the V-4EX and V-8 are included. (9 types of filter effects including silhouette, colorpass, negative and findedge are possible)FULL AUDIO MIXER INCLUDED- Included is a 12ch digital audio mixer.- In addition to 4 stereo audio inputs from the HDMI ports, the V-1HD also supports a stereo line level input and a mic level input.- Every channel is equipped with a delay function to synchronize the video and the audio.*The maximum delay time is 500ms.- Audio follow function enables the audio to transit along with the video.- Reverb function and mastering function used for adjusting sound quality and volume are also supported.- With audio output jacks you can send the audio mix to a PA system or record it on an external device.EASY TO OPERATE WITH HARDWARE CONTROLS- Basic operations can be done by operating the buttons and the T-Fader on the unit.- To make detailed settings you just need to connect a monitor to the preview connector.TWO HDMI OUTPUTS- Four-way multi-view preview screen shows every input source (non-drop frame). A red border shows the video currently being output and a green one indicates the video to be output next.- There are three types of view modes available for the preview output which are Multi-view, Output (as a program output) and Preview. On-screen display can be turned on or off.REMOTE CONTROL VIA USB OR MIDI CONNECTION- V-1HD RCSV-1HD RCS is an application for remote control of V-1HD from a PC.- By connecting the V-1HD to a computer via USB, you can perform remote control from the computer, backup / restore settings, and update system software.* \"V-1HD RCS\" can be downloaded for free.* \"V-1HD RCS\" supports Windows / MacOS.- V-1HD RemoteV-1HD Remote is an application to control V-1HD connected with USB by USB. Graphically displays the status of the operation. It is also possible to perform operations that are divided into \"image switching with the main unit, audio mixing with the application.* V-1HD Remote can be downloaded for free from the App Store.* Please use Apple's Lightning-USB Camera Adapter for connecting iPad.Technische Spezifikationen 153554b96e