The TS Stream Encoder has several advantages. The transmitted stream is copied directly into the TS file, it consumes fewer resources, can be terminated without problems, and the recording windows are hidden and do not interfere. The conversion to mp4 takes place only after the recording.
The FFMEPG Copy Encoder converts each recording directly into an mp4 file, windows must be visible to control them, video optimisation already takes place during recording, consumes more resources and must be terminated properly.
For recording and viewing the recordings, the TS Stream is recommended. If you want to edit individual videos and only record manually, then the FFMEPG Copy would be better.