Live audio and video over iroh.

Live binds an iroh Endpoint to a MoQ transport. Live::publish hands back a broadcast every connected peer can subscribe to, Live::subscribe reaches one a peer publishes, and Call is 1:1 sugar over the two. The media comes from moq-media, re-exported here as iroh_live::media.

use iroh_live::{Live, media::{audio, video}, ticket::LiveTicket};

let live = Live::from_env().await?.with_router().spawn();
let broadcast = live.publish("hello")?;

broadcast.video().set(video::capture::Config::default())?;
broadcast.audio().set(audio::capture::Config::default());

println!("{}", LiveTicket::new(live.endpoint().addr(), "hello"));

Publishing is node-wide. A broadcast is created on the endpoint's origin and announced to every peer with a session, so connecting to a relay later is enough to reach it there.

let sub = live.subscribe(ticket.endpoint, &ticket.broadcast_name).await?;
let tracks = sub.media().await;

Subscription bundles the MoQ session, the RemoteBroadcast, and a receiver of transport signals, with the stats recorder and the signal producer already wired up. Hand the signals to VideoTrack::enable_adaptation to follow the downlink.

Rooms live in iroh-rooms. What they need from here is the gossip instance, which LiveBuilder::with_gossip() creates and Live::gossip() returns.

All pass through to moq-media: capture and render by default, plus playback, aec, pipewire, vaapi, and nvidia.

examples/publish.rs publishes a camera and a microphone, with a simulcast ladder behind --simulcast. examples/subscribe_test.rs is the test helper the browser end-to-end suite uses.