rtmp_get_render_loop_argument
Retrieves an argument on the given rtmp loop.
arguments
- "argument_name" : String
The name of the argument to retrieve.
- "loop_name" : String
The name of the loop.
- "shared" : String (default: null)
If set then lookup as a shared render loop.
return value
StringThe argument or NULL if no argument of that name is set.