- Mar 10, 2018
- 2
- 0
I'm running BI v4.7.1.1 (latest as of the time of this post) on a dedicated small form factor PC (Intel i5-4570T @ 2.90 GHz, Win10 64-bit, 8 GB RAM). I have 8 cameras running, 6 of which are over PoE and 2 of which are using wifi. I had the system working as desired using the "Triggered + periodic: each" setting for capturing 1 frame/sec except when the camera is triggered, when it switches to full-speed recording. The only problem was that I was almost always pegging the CPU, usually between 92% and 100%. This resulted in some recording/playback lag, lots of heat and fan operation, and occasional bluescreens (not BI's fault, but exacerbated by the CPU load).
I read some posts here noting that direct-to-disc recording would really help with CPU load, so I switched all of the cameras over to that setting. Lo and behold, now it hums along with all 8 cameras and only mid-30% load, with less than 2 GB used most of the time. Excellent!
Except, now I've lost the time-lapse part of the recording, even though the BI interface indicates (1 Hz blinking red light on each camera) that I should still be recording one frame per second in the non-alert times. The recorded clips only contain the full-speed triggered segments. Note that I did not change any of the other configuration options except to uncheck the "Enable overlays" option, as I understand that this is not supported anyway in direct-to-disk mode. Why does periodic recording not work?
Here are screenshots showing the relevant configurations of one of the cameras in question (Amcrest IP2M-841EW PoE camera in this case).
Video Configuration:
Record Configuration:
Video Format Configuration:
The camera itself is set to "H.264H" encode mode at 1080P @ 30 fps.
Is single-frame periodic recording not supported with direct-to-disc recording? BI has been working beautifully with the same configuration up to this point, so I'm hopeful that I can figure this one out without having to revert to re-encoding, since I'll apparently need a much beefier machine to handle it.
I read some posts here noting that direct-to-disc recording would really help with CPU load, so I switched all of the cameras over to that setting. Lo and behold, now it hums along with all 8 cameras and only mid-30% load, with less than 2 GB used most of the time. Excellent!
Except, now I've lost the time-lapse part of the recording, even though the BI interface indicates (1 Hz blinking red light on each camera) that I should still be recording one frame per second in the non-alert times. The recorded clips only contain the full-speed triggered segments. Note that I did not change any of the other configuration options except to uncheck the "Enable overlays" option, as I understand that this is not supported anyway in direct-to-disk mode. Why does periodic recording not work?
Here are screenshots showing the relevant configurations of one of the cameras in question (Amcrest IP2M-841EW PoE camera in this case).
Video Configuration:
Record Configuration:
Video Format Configuration:
The camera itself is set to "H.264H" encode mode at 1080P @ 30 fps.
Is single-frame periodic recording not supported with direct-to-disc recording? BI has been working beautifully with the same configuration up to this point, so I'm hopeful that I can figure this one out without having to revert to re-encoding, since I'll apparently need a much beefier machine to handle it.
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