Handle #EXT-X-ENDLIST appended to live playlist without new segment

api-extractor/report/hls.js.api.md

@@ -303,6 +303,8 @@ export class BaseStreamController extends TaskLoop implements NetworkComponentAP
     // (undocumented)
     protected bufferFragmentData(data: RemuxedTrack, frag: Fragment, part: Part | null, chunkMeta: ChunkMetadata, noBacktracking?: boolean): void;
     // (undocumented)
+    protected checkLiveUpdate(details: LevelDetails): void;
+    // (undocumented)
     protected clearTrackerIfNeeded(frag: Fragment): void;
     // (undocumented)
     protected config: HlsConfig;

src/controller/audio-stream-controller.ts

@@ -511,10 +511,8 @@ class AudioStreamController
     const track = levels[trackId];
     let sliding = 0;
     if (newDetails.live || track.details?.live) {
+      this.checkLiveUpdate(newDetails);
       const mainDetails = this.mainDetails;
-      if (!newDetails.fragments[0]) {
-        newDetails.deltaUpdateFailed = true;
-      }
       if (newDetails.deltaUpdateFailed || !mainDetails) {
         return;
       }

src/controller/base-playlist-controller.ts

@@ -151,6 +151,8 @@ export default class BasePlaylistController implements NetworkComponentAPI {
           `live playlist ${index} ${
             details.advanced
               ? 'REFRESHED ' + details.lastPartSn + '-' + details.lastPartIndex
+              : details.updated
+              ? 'UPDATED'
               : 'MISSED'
           }`,
         );

src/controller/base-stream-controller.ts

@@ -433,6 +433,22 @@ export default class BaseStreamController
     }
   }
 
+  protected checkLiveUpdate(details: LevelDetails) {
+    if (details.updated && !details.live) {
+      // Live stream ended, update fragment tracker
+      const lastFragment = details.fragments[details.fragments.length - 1];
+      this.fragmentTracker.detectPartialFragments({
+        frag: lastFragment,
+        part: null,
+        stats: lastFragment.stats,
+        id: lastFragment.type,
+      });
+    }
+    if (!details.fragments[0]) {
+      details.deltaUpdateFailed = true;
+    }
+  }
+
   protected flushMainBuffer(
     startOffset: number,
     endOffset: number,

src/controller/fragment-tracker.ts

@@ -206,7 +206,9 @@ export class FragmentTracker implements ComponentAPI {
     fragmentEntity.loaded = null;
     if (Object.keys(fragmentEntity.range).length) {
       fragmentEntity.buffered = true;
-      if (fragmentEntity.body.endList) {
+      const endList = (fragmentEntity.body.endList =
+        frag.endList || fragmentEntity.body.endList);
+      if (endList) {
         this.endListFragments[fragmentEntity.body.type] = fragmentEntity;
       }
       if (!isPartial(fragmentEntity)) {

src/controller/stream-controller.ts

@@ -657,9 +657,7 @@ export default class StreamController
 
     let sliding = 0;
     if (newDetails.live || curLevel.details?.live) {
-      if (!newDetails.fragments[0]) {
-        newDetails.deltaUpdateFailed = true;
-      }
+      this.checkLiveUpdate(newDetails);
       if (newDetails.deltaUpdateFailed) {
         return;
       }

src/loader/level-details.ts

@@ -72,7 +72,10 @@ export class LevelDetails {
     const partSnDiff = this.lastPartSn - previous.lastPartSn;
     const partIndexDiff = this.lastPartIndex - previous.lastPartIndex;
     this.updated =
-      this.endSN !== previous.endSN || !!partIndexDiff || !!partSnDiff;
+      this.endSN !== previous.endSN ||
+      !!partIndexDiff ||
+      !!partSnDiff ||
+      !this.live;
     this.advanced =
       this.endSN > previous.endSN ||
       partSnDiff > 0 ||