VTO2000A and SIP video resolution

[riogrande75]

Hi!
I recently installed a VTO2000A at my house' door runnning a modified version of the latest SIP firmware (General_Overseas_VTOXXX_Eng_P_16M_SIP_V1.000.00.0.R.20170425.bin).
I hooked up the device in my astersik server (11.13.1~dfsg-2+deb8u5) and I am able to make SIP video calls from and to the VTO.
This works fine with android and windows softclients (Bria, Grandstream Wave, Zoiper, Jitsi,...). All of these softclients support h264 video resoltion 800x480 and fmtp profile-level-id=428014.

To make this available to my kids too, I installed a Grandstream GXV3140 SIP video phone in my kitchen. This supports H264 video codec and works fine together with the softclients. Only the VTO2000A does not deliver a useable pic to the phone.
I am convinced, the reason is, that the GXV3140 does not support h264 profile-level-id=428014.

So what I need is, to tell the VTO not to use video from MainFormat (800x480) but from ExtraFormat(320x240).
Any Idea, if this can be set via DAHUA_HTTP_API_FOR_IPC?

 

[riogrande75]

I guess I found the solution by myself!

I found out, that the file that gets created with "Export Config" is a simple textfile.
After analyzing it, the parameters regarding the "TalkbackDevice" seemd to me to have something to do with the SIP settings.

"TalkbackDevice":[{"AudioChannel":0,"AudioEnable":true,"AudioStream":"Main","VideoChannel":0,"VideoEnable":true,"VideoStream":"Main"}],

So I changed the VideoStream for TalkBackDevice from "Main" to "Extra1" and uploaded the config again. The "AudioStream" parameters changed itself then to "Extra1".
And now I get a resolution of 320x240 in SIP video calls. It really seems that did the trick!

Maybe this is helpful for other issues regarding video as well - just edit the config manually.