fix: lxml.etree.tostring returns ASCII

Not a bug, but decoding ASCII should be faster.

Author: defnull

bbblb/model.py

@@ -545,7 +545,8 @@ class PlaybackFormat(Base):
     recording: Mapped[Recording] = relationship(back_populates="formats")
     format: Mapped[str] = mapped_column(nullable=False)
 
-    # We need this for getMeetings search results, so store it ...
+    # Parts of the XML can contain arbitrary extentions, so we keep it
+    # around for getRecordings requests.
     xml: Mapped[str] = mapped_column(nullable=False)
 
 

bbblb/services/recording.py

@@ -119,7 +119,7 @@ def _format_from_metadata(metadata_xml: "FormatXMLWrapper", recording: model.Rec
     return model.PlaybackFormat(
         recording=recording,
         format=metadata_xml.format,
-        xml=lxml.etree.tostring(metadata_xml.playback_node).decode("UTF-8"),
+        xml=lxml.etree.tostring(metadata_xml.playback_node).decode("ASCII"),
     )