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.
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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.
Modern smartphones, like the iPhone 5c/5s, the Samsung Galaxy S5, and the HTC One, tend to film at 1080p quality and at 30 frames per second, if not better. Again, resolution is not all there is to picture quality, but for the average user, modern smartphones' video recording capabilities have the potential to be just as good for casual video-making as cheap camcorders.
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.
4K UHD (3840x2160) is 4X more pixels than full HD 1080p and 27X more pixels than standard resolution. That's why 4K Ultra HD consumes much more computation power than 1080p and SD resolution. So when it comes to play 4K movies on Windows PC, it's no doubt that your Windows PC should equip an even higher-end video card to deal with compute-intensive 4K decoding and playback.
If it's the 4K video footage to blame, you're advised to import the 4K movie to WinX HD Video Converter Deluxe, which can auto repair the slightly damaged 4K files, help you cut off the scratched/unplayable clips from the video, downscale 4K to 1080p, adjust 4K 60FPS to 50/30FPS, tweak 4K video bit rate/aspect ratio and convert 4K video codec from AV1/HEVC/VP9/VP8 to H264, MPEG-4, MP4, MOV, AVI, MKV, etc. 2ff7e9595c
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