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Fix delta playlist update discontinuity regression #7292

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merged 1 commit into from
Jun 2, 2025

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@robwalch robwalch commented May 30, 2025

This PR will...

Fix delta playlist update discontinuity regression introduced in v1.6.2 with #7168

Why is this Pull Request needed?

In making sure that discontinuity sequences were synchronized between playlist updates without #EXT-X-DISCONTINUITY-SEQUENCE (#7168), a regression was introduced in handling of delta playlists where segments that were skipped are expected to provide a discontinuity sequence (newFragments[0].cc).

Are there any points in the code the reviewer needs to double check?

These changes make sure that the discontinuity sequence cc is being updated for segments in both cases (#EXT-X-DISCONTINUITY-SEQUENCE and Delta Playlist updates), and that startCC and endCC are set towards the end of merging details after skipped segments have been patched.

Resolves issues:

Fixes #7282

Checklist

  • changes have been done against master branch, and PR does not conflict
  • new unit / functional tests have been added (whenever applicable)
  • API or design changes are documented in API.md

@robwalch robwalch added this to the 1.6.5 milestone May 30, 2025
@robwalch robwalch merged commit fe6e958 into master Jun 2, 2025
27 of 28 checks passed
@robwalch robwalch deleted the bugfix/delta-discontinuity-regression branch June 2, 2025 17:34
@github-project-automation github-project-automation bot moved this from In progress to Done in Low-Latency HLS (LL-HLS) Jun 2, 2025
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Delta Playlist Update Discontinuity Regression Issue
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