This mode is almost the opposite of ‘Pre-Processed Footage mode’ in operation.
When PM service is executed, it directly accesses the recorder or Recording service, accesses the recorded data and performs analysis (IDLA).
Also, this mode can do PM search with any camera (the biggest difference from Pre-processed Footage mode)

Advantages :

‘Pre-Processed Footage mode’ costs a lot when building a service, but Recorded Footage mode doesn’t require IDLA VA service and MariaDB for pre-processed VA metadata like the above configuration. (In other words, the construction cost is lower than the Pre-Processed Footage mode.)
So, if the cost of H/W is burdened, you can use this mode.