In other words if the the recording of a camera start at T0 and stop at T1 then restart at T3 and stop at T4, there is a command to take the list of recorded chunks of the camera?
T1-T2 → first chunck
T3-T4 > second chunck
Does VideoOS.Platform.Data.SequenceDataSource.SequenceDataSource do what you’re looking for?
If so, then for protocol integration you may be looking for the Recorder Command Service. The SDK documentation has a sample URL to retrieve the WSDL and includes a link to a copy of it for reference. You should be able to retrieve a list of sequences which define the start and end times for recording sequences.