Dahua NVR and what are the options of Anti-Dither, Record Delay, Pre-Record in the settings

zexoni70

Getting the hang of it
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Respect to all,

of security cameras and equipment I have the following :

1. NVR4108HS-4KS2 / L
2. PFS3006-4GT-60
3. IPC-HDW3841EM-AS
4. IPC-HFW3849T1-AS-PV
5. IPC-HDW3849H-AS-PV
6. IPC-HFW3841T-ZAS
7. SD29204UE-GN-W

In the NVR settings, it is set to record constantly and only on Motion Detection, but it often happens that even if I set the Pre-Record option to 10 seconds, the first second of the scene is missing at the beginning of the recording.
So I ask what values should I set so that it doesn't happen and so that the NVR records 10 seconds before the first movement on the recording.
Eventually, do the Anti-Dither, Record Delay options have anything to do with this delay in recording and what are they for (especially the Anti-Dither option) because I've read a lot about it but I can't clearly read what it's for?

Thanks & Regards!
 

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