qtwebengine CaptureAudio permission in Windows xp

I'm writing a qt project that uses jitsi for doing voice calls. In windows 7, 8, 10 and others i'm using QtWebEngine module, open jitsi web page in QWebEnginePage and all works perfectly. But problems begins when i try to run my app under windows XP. As it's known, QtWebEngine doesn't support windows xp. What can i do for getting working chromium engine in my app. Sure it is possible to build qtwebengine from sources using VS2013 and Windows SDK v7.1A. As a confirmation, i've found otter browser project, which use qtwebengine and works under windows XP. Okay. But when i tried to do jitsi call in this browser it shows me an error and do not request audio capture permission. So, it is not working.

There is old QtWebKit module, that works in windows XP, but it doesn't support granting audio capture permission.

So i'm confused. Any ideas how to get working qt web engine with audio capturing in windows xp?