"Video playback" refers to the act of watching or playing a video file on a device such as a computer, smartphone, or television. It means viewing recorded footage or content that has been digitally stored. Full definition
Using the included charger, you can get to 50 percent capacity in 30 minutes, or supposedly 2 hours of video playback out of just a 10 - minute charge. (tomsguide.com)
The processor also boasts of HD video playback support as well as 3D graphics acceleration. (goodereader.com)
90 minutes of video playback with the brightness set to maximum takes 20 % off the battery. (techradar.com)