Hello,
It is peculiar as to why FTP Postpone exists and it's need is still not explained properly in any available resources.
I lose the first 5 seconds of recording using FTP from when the camera senses a movement to the start of the recorded file. I assume this is from a delay in turning on/setting up a recording before the camera starts to send it over FTP, but the lack of "Pre-Motion Record" in the FTP menu is also peculiar.
"Pre-Motion Record" is included in the Record menu (ie SD card recording) and seems to be a fixed setting providing around 8 seconds of pre-recorded footage. Also the SD card does not appear to supplement the FTP footage and they act as separate parallel entities.
Just to provide some info about my set up + eliminate some possibilities, I have done some testing:
- Tested on camera firmware: v3.0.0.1337_22091901 & v3.0.0.1889_23031701
- Duo 2 Wifi hardware version: IPC_529B17B8MP
- Client version: 8.8.5
- I am using a 1Gb ethernet.
- Camera is on a 1m ethernet cable and computer is on a 2m ethernet cable.
- SD card is Class 10 / U3 / V30.
- Windows 10 firewall On or Off makes no difference to the delay in recording.
- FTP Postpone has a "5Second(s)" minimum setting when accessing the camera through the browser as opposed to the "15Second(s)" in the client software - Still makes no difference.
- Clear or Fluent streams do not make a difference.
- "Transport Mode" does not make a difference.
- FTP or FTPS does not make a difference.
- Turning off "Pre-Motion Record" still provides around 3 seconds of pre-recording but only for the SD card.
I am guessing that since the "Pre-Motion Record" option is available for the SD card then it would not be too much trouble to implement for the FTP recordings. Even if the SD card was required to be installed to supplement the pre-recording for the FTP footage it would still be of benefit.
