Group calls

Group-call route and media APIs are present, including joining a room, participant state, mixed audio receive, and encoded video transport. The API is lower level than a complete meeting client: it does not capture microphones or cameras, render participant tiles, or choose who may join.

Example

The command example detects whether !call was sent in a group or 1:1 chat. In a group it starts or joins the group call and streams the bundled WAV.

sh

LINE_AUTH_TOKEN_FILE=/path/to/auth-token.txt \
LINE_DEVICE=ANDROID \
deno run -A example/call/call_on_command.ts

Source: example/call/call_on_command.ts. Its group branch, GroupCallRoute, and CallSession usage were checked against the current implementation. A static check does not confirm live group-call interoperability for every account or client.

Available building blocks

client.call.acquireGroupRoute(...) acquires the route through the LINE call service.
CallSession accepts a group route and joins the room.
session.participants exposes the latest participant and media-source state.
session.received() yields mixed 48 kHz PCM when the transport supports group audio receive.
session.receivedVideo() yields encoded VP8 frames when video is negotiated and subscribed.

For protocol details and current support caveats, see Calls and media and feature status.