Portable DVD player screens come in different screen resolutions, but the difference isn’t as important as you might expect. All DVD content has a resolution of 720 x 480, which is low by modern standards, so any DVD player you choose should;be able to show off every pixel. Some players have screens with higher resolutions, which can be useful if you have personal video files. If you have a lot of personal high-resolution content, you might want to check out models with higher resolutions (like 1366 x 768), but otherwise, any model you pick will display your DVDs just fine.