Playback remains stuck in loading state #2927
Description
Version
Media3 main branch
More version details
Description of the Bug
We are encountering a regression where video playback occasionally stalls and remains in a perpetual loading state. This issue occurs approximately one out of four times when attempting to play a stream.
Reproduction Details and Specific Conditions
The bug is not reproducible using the manifests provided within the demo application. It appears to be highly dependent on a specific combination of stream characteristics and player initialization settings:
- Hardware DRM: The video stream must be protected with Hardware DRM.
- Default Subtitles: The stream must have a default subtitle track selected.
- Start Position: Playback must be initiated at a specific, non-zero timecode (i.e., calling player.seekTo(timecode)).
When all three conditions are met, the player fails sometime (1/4) to transition from the loading state to the playing state
Version and Regression Identification
Version Introduced: The bug appeared after upgrading to version 1.5.1.
Suspected Commit: I was able to narrow down the regression to the following commit:
Workaround
We have found a temporary workaround that successfully mitigates the issue:
Before calling player.prepare(): Disable the default subtitle track.
After the player reaches the "prepared" state: Re-enable the subtitle track.
Devices that reproduce the issue
Nvidia shield tv
Devices that do not reproduce the issue
No response
Reproducible in the demo app?
Yes but with our manifest
Reproduction steps
None
Expected result
Playback always plays successfully
Actual result
Playback stuck sometime in loading state
Media
I am unable to share the specific manifest that reproduces this issue as it is protected by DRM.
Bug Report
- You will email the zip file produced by
adb bugreportto android-media-github@google.com after filing this issue.