QNAP Security VioStor NVR (Version: 4.1.2) - Manual (Page 109)

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Next time interval
Digital zoom: Enable/Disable digital zoom. When digital zoom
is enabled ( ), you can click to use digital
zoom function.
Stop
/
Play/pause a video file
Last frame
Next frame
Reverse play
Play the video at 1/16x, 1/8x, 1/4x, 1/2x, 1x, 2x, 4x, 8x, 16x
speed
Control all views: Control the playback settings of all the
playback windows