Dynamic multi-user media streaming

Techniques are described for dynamic multi-user media streaming for client systems in a media session. In an embodiment, a local client system receives a media stream originated from a remote client system which is in the same media session. The local client system displays a local participant user interface (UI) control representing the local user at a first position on its local UI and further displays, a remote participant UI control representing the remote user on a second position on the local UI. When the local participant UI control is moved to a new position, the proximity to the remote participant UI control changes. Based at least in part on the change in proximity, the media stream originated from the remote client system is modified. For example, as local and remote participant UI controls are moving closer, the local client system may increase the volume of the audio track. Techniques further include other media session interactive features.