QNAP VS-2004L en - Manual (Page 101)

101
The icons and description of the VioStor Player are described below.
Icons Description
Configure the options such as playing mode, snapshot settings,
and digital watermark
Single-view mode
4-view mode
9-view mode
16-view mode
Full screen
Take a snapshot of the video
Convert the video files on the NVR to AVI files