Recommended Video quality setting for HIKVision NVR 16 channels

[babybenz]

Hi there,
I am pretty new to the world of CCTV.
I recently helped to setup a HIK NVR DS-7616 NI-Q2/16P for a senior assisted home. We have 16 cameras, all run on the NVR PoE ports, 2MB.
The HDD is 4TB
I set the video quality for mainstream as per below:

Resolution: 1280 x 720P
Bitrate type: Variable
Video Quality: Medium (other options are lowest, lower, low, medium, higer, highest)
Frame rate: 15
Max bitrate: 768
Video encoding: H264 (default)
H.264+: OFF (other option is ON)

I have about 27 days of recording, which is pretty OK for what we need
But I just wonder, if that is OK for the best quality-storage ratio yet?


For the substream, I have the following:
Resolution: 640x360
Bitrate type: Variable
Video Quality: Medium (other options are lowest, lower, low, medium, higer, highest)
Frame rate: 10
Max bitrate: 255
Video encoding: H264 (default)

When I am using the HIKvison app (iVMS4500) to view the CCTV, often at 9-camera liveview at a time, then the app crashed with error not enough memory! Often after a reconfig, it worked again but it's annoyed.
Any idea as to what should be the max bitrate for the substream? Is there a way to check if the app is using the substream setting? (to ensure it does not use the mainstream)

Thank you all

 

[Parley]

I always use the highest. Frame rate at 15 is ok. For video encoding I would use H.264+. Maxrate bitrate for the substream should be around 1000. Can you go higher than 1280 x 720 on the resolution? We need to know the cameras that you are using.

 

[babybenz]

I always use the highest. Frame rate at 15 is ok. For video encoding I would use H.264+. Maxrate bitrate for the substream should be around 1000. Can you go higher than 1280 x 720 on the resolution? We need to know the cameras that you are using.

The cameras are HIKvision bullet, 4 Mpx, model DS-2CD20xxWD
The resolution has the following values options:
1280x720P
1920x1080P
2304x1296
2688x1520
The supervisor of the complex use extensively iVMS4500 app on his iPad to monitor the surroundings and halls. So our focus is to get 16 live view camera loaded at once on the iPad the faster the better. It is, if possible, the less sacrifying the image quality. I am a little hesitate that if I crank up the frame rate for the substream to 1000, it may jam all the bandwith and cause the iVMS-4500 app to crash on the iPad (error display as "not enough memory" etc...
Any idea?

 

[Parley]

I just checked out the decoding capacity of your NVR and it is 1-ch@8 MP (30 fps)/5-ch@1080p (30 fps). So if you limit your your frame rate to 15FPS that would double that capacity. That would give you 10 channels at 1080 and 15FPS. So maybe limit your cameras to 10FPS and that would up the quality of the video that you can have.

Personally I would have purchased the DS-7616NI-I2/16P NVR. That would have given you a lot more capability. You could run all 16 cameras at 2MP and high quality. The decoding capability with this NVR is 2-ch @ 12 MP (20fps) / 4-ch @ 8 MP (25fps) / 8-ch @ 4MP (30fps) / 16-ch @ 1080p (30fps) .