Seems WMP is much better than VLC for battery life and here was me thinking it was a pointless application whose time had passed
Full story AnandTech | Windows 8.1 Battery Life Investigation: 1080p Video Playback
Windows Media Player manages 418 minutes of playback time with the MP4 file – or 32% better than MPCHC and 36% better than VLC.
Full story AnandTech | Windows 8.1 Battery Life Investigation: 1080p Video Playback