The purpose of the Grab function is to capture a still image from the current Program Output video stream or an input.
Grab is represented by a large button in the Dashboard at the top of the screen, and smaller grab (camera) icons which appear at upper-right on Switcher source viewports. The former grabs stills from MIX outputs (when enabled individually), while the latter grabs an image from specific Switcher sources.
The Grab Menu
Click the Configure button (gear) next to Grab in the Dashboard at the top of the Live Desktop to choose a target Media Player for grabs. Otherwise, input and output grab configuration options are very similar to those described above for recording.
Note: De-Interlacing is automatically applied to avoid a comb effect caused by inter-frame motion in fielded sessions.