Fix subtitle segment loading at live start #7349
Merged
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This PR will...
Fix subtitle segment loading hanging on live start with mismatched discontinuity
Why is this Pull Request needed?
The subtitle-stream-controller must determine where to begin loading segments in the same way that the audio-stream-controller does, in sync with the live start determined by the main stream-controller.
Are there any points in the code the reviewer needs to double check?
If subtitle segments are loaded in another discontinuity domain for which the init PTS is not resolved, the segment data should be dropped, and subtitle segment loading resumed.
Resolves issues:
Fixes #7347
Checklist