Please see following samples, these samples might be helpful.
- Video Viewer
The sample can show live and recorded video for two cameras.
The two cameras will operate in the same mode and be synchronized with regards to the playback time and playback commands.
- Individual Playback
The sample can show live and recorded video for two selected cameras.
This sample is similar to the VideoViewer sample but can control multiple cameras with respect to mode (live or playback) and time stamp.