fix(ffmpeg handling): add language tag to is russian identification

serverlibrary/core.py

@@ -223,6 +223,8 @@ def get_audio_tracks(
                         or stream.get("tags", {}).get("language")
                         or f"Track {stream['index']}"
                     ),
+                    "lang": stream.get("lang", ""),
+                    "language": stream.get("tags", {}).get("language", ""),
                     "primary": stream.get("codec_type") == "audio"
                     and stream.get("disposition", {}).get("default") == 1,
                 }