I'm testing the zoiper app, I've connected the two android devices to my SIP server.
I have purchased the h264 codec on both devices and selected to only use that codec for video.
My audio codec is set as gsm as that seemed to be the only codec Zoiper uses regardless of what I select.
I've setup my SIP server so that it only uses the gsm and h264 codec.
Audio works fine but video will not show up, only a black screen appears.
Video call works on several other devices, It is only the android devices that are causing issues.
I've tried looking around for the solution on various websites but found no success, please help me out.