Need to load testing the audio/video calling feature of web application. Can this be done using JMeter if so please share me the resources or any guide that you may have. Or is there any better open source tool available?
I’d think yes & no. Yes it is likely possible, no in that the solution likely is not readily available.
You’d most likely have to implement the test logic as a plugin or Java class package, and then load/call that with JMeter (invoking the plugin, or loading the Java class with Java Sampler).
You could engage/contact BlazeMeter the company to see if they have ideas/solution around it.
They have some solutions for video streaming load testing, which isn’t the same thing you’re asking about, but it’s a bit similar.