CastPlayer: Scrubbing (Seeking) is Non-Responsive for Live Stream

Version

Media3 1.8.0

More version details

When casting the a live HLS live stream (with a large window), seeking (scrubbing) within the timeline does not work.
Observation:
In the demo-cast app, the scrub bar is simply disabled, so we cant reproduce.
In our project, the receiver does not respond to any scrubbing attempts. Debugging indicates the seek command is never sent to the cast receiver.

This led us to implement a custom logic using CastTimelineTracker to enable seeking.

Devices that reproduce the issue

Any

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

No

Reproduction steps

Ensure that seeking is supported by the cast-receiver. addSupportedMediaCommands(ALL_BASIC_MEDIA)

Cast the stream to the chromecast device.
Once playback begins, attempt to scrub (seek) backward or forward in the timeline.

Expected result

When scrubbing in a timeline it should be received by the chromecast device.

Actual result

Scrubbing actions do not result in a seek; the command appears to not be sent to the receiver (in our app).

Media

Stream details: ~30-minute window, 6-second segments, audio only

Bug Report

• You will email the zip file produced by adb bugreport to android-media-github@google.com after filing this issue.