Why Are Black Bars Still Visible on an HD or 4K Ultra HD TV? GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Home Theater & Entertainment > TV & Displays

Why Are Black Bars Still Visible on HD or 4K Ultra HD TV?

There is a good reason you may see black bars on your TV screen

By Robert Silva Robert Silva Writer San Diego State University Robert Silva has extensive experience in consumer electronics and home theater product sales and sales supervision; he has written about audio, video, and home theater topics since 1998. Robert has articles published on HBO.com and Dishinfo.com plus has made appearances on the YouTube series Home Theater Geeks. lifewire's editorial guidelines Updated on December 10, 2020 Reviewed by Jessica Kormos Reviewed by Jessica Kormos Saint Mary-of-the-Woods College Jessica Kormos is a writer and editor with 15 years' experience writing articles, copy, and UX content for Tecca.com, Rosenfeld Media, and many others. lifewire's editorial guidelines Tweet Share Email Tweet Share Email TV & Displays Samsung Projectors Antennas HDMI & Connections Remote Controls When viewing theatrical films on your HDTV or 4K Ultra HD TV, you might still see black bars on the top and bottom of some images, even though your TV has a 16x9 aspect ratio. This information applies to televisions from a variety of manufacturers including, but not limited to, those made by LG, Samsung, Panasonic, Sony, and Vizio. Lifewire

16x9 Aspect Ratio Defined

The term 16x9, also expressed as 1.78:1, means the TV screen is 16 units wide horizontally, and 9 units high vertically. No matter what the diagonal screen size is in inches or centimeters, the ratio of horizontal width to vertical height (aspect ratio) is constant for HDTVs and 4K Ultra HD TVs. GlobalRPH and Display Wars provide useful online tools that can help you determine the horizontal screen width and height on any 16x9 TV, based on diagonal screen size.

Aspect Ratio and What You See on Your TV Screen

The reason that you see black bars on some movie content is that many films use wider aspect ratios than 16x9. For example, since the DTV transition, original HDTV programming has the 16x9 (1.78) aspect ratio, which fits the screen dimensions of today's LCD (LED/LCD), Plasma, and OLED HDTVs and 4K Ultra HD TVs. However, since the mid-1950s, many theatrically-produced films have featured wider aspect ratios, including 1.85 and 2.35. You will see black bars on the top and bottom of a TV screen when you watch these films on an HDTV or 4K Ultra HD TV (if presented in their original theatrical aspect ratio). Images displayed with black bars on the top and bottom are often referred to as "letterboxed." Aspect Ratios can vary from program to program. If you're watching a DVD, Blu-ray, or Ultra HD Blu-ray Disc, the aspect ratio listed on the package labeling will determine how it looks on your TV (many DVD packages may also state "Enhanced for 16x9 TVs"). If an HDTV program or film is 1.78:1, then it will fill the entire screen correctly.If the aspect ratio of a film is 1.85:1, then you will notice small black bars on the top and bottom of the screen.If the aspect ratio of a film is 2.35:1 or 2.40:1, which is typical for big blockbuster and epic movies, you will see large black bars on the top and bottom of the image. On the other hand, if you have a Blu-ray Disc or DVD of an older classic movie and the aspect ratio is listed as 1.33:1 or "Academy Ratio," or you are watching a rerun of a TV program made before HDTV was typical, then you'll see black bars on the left and right side of the image on a 16x9 aspect ratio screen, instead of the top and bottom (a "pillar box" image). Movies made before the frequent use of widescreen aspect ratios or TV shows made before HDTV was in use (those old analog TVs had an aspect ratio of 4x3, which is more "squarish" looking) result in pillar box images. On HD and Ultra HD TVs, as well as most video projectors, you can stretch a 4x3 image to fill the space. However, doing so distorts the proportions of that image, resulting in objects appearing wider horizontally, which is especially noticeable on the sides of the picture.

Black Bars vs Filling the Screen

When viewing TV shows and movies, the primary concern is whether you see everything in the picture, especially if you see the image on a projection screen, which is larger. Real HDTV programs fill the screen. Many movies have display black bars on the top and bottom of the screen, and most films made before the mid-1950s and pre-HDTV shows present with black bars on the left and right side of the image. The TV screen is providing a surface upon which you view images. Depending on the format, the entire picture might or might not fill the whole screen. However, the screen surface on a 16x9 television can accommodate more variations in the aspect ratio realistically than older, 4x3 analog televisions. Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire Can You Still Use an Analog TV? What Is 4K Resolution? Overview and Perspective of Ultra HD What Is an Aspect Ratio and Why Is It Important? What to Look for When Buying a Projector Should You Buy a Blu-ray Player? Video Projection Screens: What You Need to Know What You Need to See 4K Resolution on a 4K Ultra HD TV The Best Picture Settings for Samsung 4K TV What Is HDTV? HDR: Dolby Vision, HDR10, HLG — What It Means for TV Viewers Digital TV vs. Analog TV HDR vs. 4K: What's the Difference? How Does Standard DVD Upscaling Compare to Blu-ray? How to Buy a TV in 2022 DirecTV 4K Ultra HD TV Channels - What You Need to Know YouTube Codes: How to Fix Common Video Problems Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies