Add input, Video, Avi, wmv, mpeg, mxf, mp4 and quicktime files – vMix Live Production Software Pro User Manual
Page 42: Mark in/out

vMix User Guide
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Adding and Removing rows
Multiple rows of inputs can be displayed in the main vMix window by dragging up or down the dividing line as
shown below:
The number of rows that can be added or removed depends on the display resolution set in Windows.
1920x1080 is recommended and allows up to three rows of inputs to be displayed at a time.
If more inputs are added than can be displayed, a scroll bar will appear to the right of the inputs.
Add Input
Click this button from the
to bring up the
Add Input
window.
Video
Use the Video Input to load video files such as AVI, MPG, MXF, MP4, WMV and QuickTime.
DVD files should be loaded through the DVD option instead.
Mark In/Out
The Video Input supports specifying custom Start (Mark In) and End (Mark Out) points for playback.