dahua NVR, how to record general at lower quality and movement at high?

wozzzzza

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how do i set up my dahua NVR to record constantly at a low quality and as soon as movement is detected switch to high quality??
 

catcamstar

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Never messed with a setup like this (why wouldn't you save all high quality footage anyway, TB disk costs nothing nowadays), but my guess is that you can fiddle with these settings:
1616842306192.png
You could try to mark your main streams as "manual" (hence triggered by the IVS rules for example), but the substreams on "auto" so they follow the 24/7 rule.

Hopefully this helps!
CC
 

bigredfish

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You could I suppose set your cameras to VBR. When there is no activity and the scene isn’t complex, VBR will conserve bitrate. When it sees motion it will ramp up to a much higher bitrate
 

paul@austins.tv

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In Settings/Camera/Encode adjust General/Motion/Alarm to the relevant bitrate required? Or I have misunderstood what you wish to do.
 

bigredfish

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Duh, of course.
Its been so long since I messed with encode settings on the NVR I simply forgot about that

Encode-NVR.jpg
 

genelit

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1. Make sure Main and sub stream are enabled.
2. If using I.E. IVS make sure you click record in the event.
3. Go to Storage-> Record Mode and choose Auto on main stream and Manual on Sub stream.

Then you have constant recording on substream And main stream recording for events.

20210410_150655.jpg
 

bigredfish

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Yes but he was asking how to record the streams at different qualities....
 

catcamstar

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1. Make sure Main and sub stream are enabled.
2. If using I.E. IVS make sure you click record in the event.
3. Go to Storage-> Record Mode and choose Auto on main stream and Manual on Sub stream.

Then you have constant recording on substream And main stream recording for events.

View attachment 86429
That's what I tried to explain in post #2 but that didn't seem to work well?
 

genelit

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Exactly, thought I wanted to show it look on the NVR with the Main/Sub-streams.

I run it like this and can confirm it works. BUT, what doesn't work perfectly is the pre-recording before the event happens. For my setup it only works for my MD/SMD but not for IVS-Rules.

Yesterday I tried different resolutions for general/motion. Didn't get it to work, will try with another cam today.
 
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