Interesting about the
IE-Tab Chrome extension. When I try to use it though it wants to charge me $6/month for up to 10 hours of use or $10/month for "unlimited" that it then explains isn't actually unlimited:
Not you?
And I have access to three different models of Dahua cameras, the IPC-HFW5231E-Z12E, the IPC-HFW7442H-Z and the SD49225T-HN, and interestingly each behaves a bit differently from browser to browser and from camera to camera. Some tests below, all in Linux Mint 20, which is basically Ubuntu 20.04 LTS. Pasting the firmware details for each camera in at the end.
And it's important to note that there doesn't appear to be any way to view the camera archives from Ubuntu for the IPC-HFW5231E-Z12E or IPC-HFW7442H-Z, that I've found at least. Very open to suggestions though.
SD49225T-HN
Chrome without a plugin doesn't work for anything (no live view, no archive viewing).
Chrome with the NACL app/plugin works for both live and archive viewing!
Firefox and Seamonkey prompt me to install a plugin, and when I try to install it, it tries to download a file from the camera (192.168.5.5/webplugin.tar.bz2) but returns a file not found (404) error. Silly.
IPC-HFW7442H-Z (similar to the Z12E but with laughably crappy built-in ALPR)
Chrome without a plugin works for live viewing but not archive viewing.
Chrome with the NACL app won't let me log in. It shows the error "Failed to load the plugin!" after I enter my credentials.
Firefox and Seamonkey work for live viewing but not for archive viewing.
IPC-HFW5231E-Z12E
Chrome without a plugin works for live viewing but not for archive viewing.
Chrome with the NACL app lets me log in and works for live viewing but not for archive viewing.
Firefox and Seamonkey work for live viewing but not for archive viewing.
Firmware details for each camera pasted in from Information -> Version:
Firmware details for IPC-HFW7442H-Z
System Version: V2.800.0000000.5.R, Build Date: 2020-05-25
WEB Version: V3.2.1.897501
ONVIF Version: 18.12(V2.4.5.826858)
Algorithm Version: 4.0.7
Security Baseline Version: V2.1
Firmware details for IPC-HFW5231E-Z12E:
System Version: V2.800.0000010.0.R, Build Date: 2019-08-07
WEB Version: V3.2.1.766334
ONVIF Version: 16.12(V2.4.3.651299)
Security Baseline Version: V1.4
Firmware details for SD49225T-HN
System Version: 2.622.0000000.7.R.R4.2510.9A.NR, Build Date: 2018-04-04
WEB Version: 3.2.1.563437
ONVIF Version: 16.12(V2.4.1.513183)