Video task leak in AgentSession

[Mayank-MSJ-Singh]

Bug Description

I was reading the livekit project while i came to this issue

What is the issue?

There is a task leak when closing an agent session.

When a voice session starts, it runs two background tasks: one for audio and one for video. When the session is closed, the code cleanly stops the audio task but completely forgets to stop the video task.

If a session is closed early (before it fully initializes), the video task is left running in the background forever. Over time, this leaks memory as more sessions open and close.

How I fixed it

I added a simple check to stop and clean up the video task at the end of the session, exactly the same way the audio task is stopped:

if self._forward_video_atask is not None:
    await utils.aio.cancel_and_wait(self._forward_video_atask)

github pull request - #6318

Expected Behavior

Expected Behavior

When an agent session is closed, all background tasks (both audio and video stream tasks) should be fully stopped and cleaned up, leaving no orphaned tasks running in the background.

Reproduction Steps

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- Sample code snippet, or a GitHub Gist link -

Operating System

Debian 13

Models Used

No response

Package Versions

latest

Session/Room/Call IDs

No response

Proposed Solution

Additional Context

No response

Screenshots and Recordings

No response

[longcw]

fixed in #6318