fix(HLS): Ensure that skipped segments are considered

shaka-project · Jul 13, 2023 · 2b9edb1 · 2b9edb1
1 parent 9ee424f
commit 2b9edb1
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/lib/hls/hls_parser.js b/lib/hls/hls_parser.js
@@ -416,10 +416,14 @@ shaka.hls.HlsParser = class {
     stream.segmentIndex.mergeAndEvict(
         segments, this.presentationTimeline_.getSegmentAvailabilityStart());
     if (segments.length) {
+      const skipTag = shaka.hls.Utils.getFirstTagWithName(
+          playlist.tags, 'EXT-X-SKIP');
+      const skippedSegments = skipTag ? Number(
+          skipTag.getRequiredAttrValue('SKIPPED-SEGMENTS')) : 0;
       const mediaSequenceNumber = shaka.hls.Utils.getFirstTagWithNameAsNumber(
           playlist.tags, 'EXT-X-MEDIA-SEQUENCE', 0);
-      const {nextMediaSequence, nextPart} =
-          this.getNextMediaSequenceAndPart_(mediaSequenceNumber, segments);
+      const {nextMediaSequence, nextPart} = this.getNextMediaSequenceAndPart_(
+          mediaSequenceNumber + skippedSegments, segments);
       streamInfo.nextMediaSequence = nextMediaSequence;
       streamInfo.nextPart = nextPart;
       const playlistStartTime = mediaSequenceToStartTime.get(