stream.dash: find ancestor SegmentTimeline nodes

bastimeyer · bastimeyer · commit a52c80b831c8 · 2023-03-14T08:53:16.000+01:00
- Fix `SegmentTimeline` in `SegmentTemplate` and find ancestor timelines
- Add `SegmentTimeline` to `SegmentList` (currently unused)
diff --git a/src/streamlink/stream/dash_manifest.py b/src/streamlink/stream/dash_manifest.py
@@ -555,7 +555,12 @@ def __init__(self, *args, period: "Period", **kwargs) -> None:
 
         self.duration_seconds = self.duration / self.timescale if self.duration and self.timescale else None
 
+        # children
         self.initialization = self.only_child(Initialization)
+        self.segmentTimeline = (
+            self.only_child(SegmentTimeline)
+            or (self.defaultSegmentList.segmentTimeline if self.defaultSegmentList else None)
+        )
         self.segmentURLs = self.children(SegmentURL)
 
     def segments(self) -> Iterator[Segment]:
@@ -696,7 +701,10 @@ def __init__(self, *args, period: "Period", **kwargs) -> None:
         self.duration_seconds = self.duration / self.timescale if self.duration and self.timescale else None
 
         # children
-        self.segmentTimeline = self.only_child(SegmentTimeline)
+        self.segmentTimeline = (
+            self.only_child(SegmentTimeline)
+            or (self.defaultSegmentTemplate.segmentTimeline if self.defaultSegmentTemplate else None)
+        )
 
     def segments(self, ident: TTimelineIdent, base_url: str, **kwargs) -> Iterator[Segment]:
         if kwargs.pop("init", True):  # pragma: no branch
