When you are unable to play video due to lagging, video corruption can also be one of the reasons. But it also happens while playing online videos on YouTube or Google chrome. The problem of video or VLC lagging is not restricted to the offline videos saved on your laptop or external drives. Due to video stuttering, your video continuously stops and plays on VLC or Windows media player over and over.
Video lagging is the delay in response while playing a video saved on the hard drive due to issues related to video, network, media player, or laptop.