fix: Fix timestamp offset for ID3 on DAI-HLS (shaka-project#4696)

theodab · Nov 14, 2022 · 386a28a · 386a28a
1 parent b06fd6a
commit 386a28a
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/lib/media/media_source_engine.js b/lib/media/media_source_engine.js
@@ -586,11 +586,14 @@ shaka.media.MediaSourceEngine = class {
       mimeType = this.transmuxers_[contentType].getOrginalMimeType();
     }
     if (shaka.util.TsParser.probe(uint8ArrayData)) {
-      const metadata = new shaka.util.TsParser().parse(uint8ArrayData)
-          .getMetadata();
+      const tsParser = new shaka.util.TsParser().parse(uint8ArrayData);
+      // The SourceBuffer timestampOffset may or may not be set yet, so this is
+      // the timestamp offset that would eventually compute for this segment
+      // either way.
+      const timestampOffset =
+          reference.startTime - (tsParser.getStartTime()[contentType] || 0);
+      const metadata = tsParser.getMetadata();
       if (metadata.length) {
-        const timestampOffset =
-            this.sourceBuffers_[contentType].timestampOffset;
         this.onMetadata_(metadata, timestampOffset,
             reference ? reference.endTime : null);
       }