Here is what finally solved it on the exportfs configuration
/home/cam2/videos 192.168.0.0/16(insecure,rw,all_squash,anonuid=1002,anongid=1003,no_subtree_check)
The cams use NFS v2, Macs uses NFS v3, and modern Unix uses NFS v4.
In the earlier version, the high ports are used from the source...