I want to build web based video chat application. I am developing the application in Angular 7 and Java Spring Boot. Also I want to use webRTC for videochat. Please share suggestions, how to build video chat using webRTC, Angular and Java Spring Boot.
If you want to build something of this complexity on specific frameworks, you will usually have to build it yourself as there's small chances of finding the exact solution on the exact frameworks already built and released to public domain.
Where to start from? WebRTC streaming is probably the core feature you need to understand and implement for such project. You could review and deploy some samples to understand the technology, requirements, what you can achieve. In example, for a scalable production project you could check streaming WebRTC trough a Wowza SE relay as with this sample html5 videochat . Then start building your own project from scratch, using the same requirements.