"Amazon Prime TV app displays wrong aspect ratio. When watching Amazon Prime Video on my Hisense smart TV, many movies display in incorrect aspect ratio. There are black bars on the sides, and the content is squished inwards horizontally."
Lots of users reported Prime Video wrong aspect ratio issue, particularly on Samsung/LG/Hisense/Sharp/Sony/Roku TV. For instance, the image is stretched, words are cut off, the aspect ratio is forced into 4:3, it keeps switching from widescreen to a standard screen and squeezing the occupants within, etc. Following troubleshooting tips below if Amazon Prime Video displays incorrect aspect ratio on your TV, iPhone, iPad, computer, PS4, or other devices.
Steps to Solve Prime Video/Instant Video Incorrect Aspect Ratio
Switch to another title
The aspect ratio issue may appear on some certain Amazon Prime Video rentals or free titles. Try playing another resource to see if the problem persists. If the problem only come with a certain title, contact Amazon for refund and ask their support to correct the problem for you. What to do if Amazon Prime Video title is unavailable.
Update the software
Check for software update on your device. Since most aspect ratio problem occurs on smart TVs, here we focus on TV. Samsung TV support center guides users to update software directly from TVs to fix Amazon Prime wrong aspect ratio issue.
On your TV, go to Settings > Support > Software Update > Update Now, and software will install quickly when any update is available. The TV will restart automatically when the software update is finished. On Hisense TV remote, navigate to All > About > System Update, press Detect to install the latest TV firmware. On LG TV, press the Home button on your TV remote, go to Settings > All Settings > General > About, and click the Check for updates button. Steps are a bit different on different TV models. You can check the manufacture's official support center for more details.
Change Amazon Prime Video/Instant Video aspect ratio
Amazon Prime Video/Instant Video should be presented in widescreen. The Amazon Prime Video app doesn't offer a feature to manually adjust the image aspect ratio. But you can convert the video to 16:9 widescreen from the device used to stream Prime Video. Depending on the device model you are using, you may be able to change the picture size/aspect ratio to:
10:9 standard display.
4:3 display suitable for SD broadcast and VHS.
Custom to customize the picture size manually.
Fit to Screen to display full image without cutting.
Check resources below to change Amazon Prime/Instant Video aspect ratio on different devices: