2. Go to your Profile name and choose the Account & Settings option.
3. Now choose the Playback Option settings. Now there will be three options for prime video quality that you can choose when playing a video on primevideo.com. These are
Good – Uses About 0.38GB per hour
Better – Uses About 1.40GB per hour
Best – Uses About 6.84GB per hour
4. If the above settings are not available. Then the only way to change the video quality is to watch the video that you want and click on the Video Quality Gear icon at the top right and select the Good, Better, or Best option.