Capturing feed from Aver NV6480T

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I've inherited a setup with a 16Ch Aver NV6480T card and not a real hope of updating to IP cameras given the distances and areas involved in terms of re-wiring. Is there any way to pull feeds in from the 8 cameras connected to the NV6480T to Blue Iris? If not, is there a card that is recommended which is compatible with BI?

Thanks everyone for your help!

 

[invalidmemory]

After some googling, looks like my best bet is to include a Dahua penta-brid in the mix and then pull the feeds into Blue Iris through it. So I've ordered a XVR501H-08 and will get that setup early next week. I'll post back the results, should they be of any use to anyone else in the same boat!