Mitsubishi Electric MELSEC iQ-R Series Introduction Manual page 62

Checking the video in the camera (GX VideoViewer)
The video data recorded by the network camera and saved in the camera recorder module can be replayed using GX
VideoViewer.
By adding log markers to the points which may cause the device error and reading the log marker information file (*.vms) in
GX Works3, the log markers added in GX VideoViewer can be added to the seek bar of the offline monitoring in GX Works3 to
synchronize and check the program operation.
Operating procedure
1.
Start GX VideoViewer.
[Tool]  [GX VideoViewer]
2.
Select the video data and click the [Open] button.
7 CHECKING RECORDED RECORDING FILES
61
7.1 Reproducing the Trouble Situation