New version

mediaflow_proxy/mpd_processor.py

@@ -172,9 +172,29 @@ def build_hls_playlist(mpd_dict: dict, profiles: list[dict], request: Request) -
 
         # Add headers for only the first profile
         if index == 0:
-            sequence = segments[0]["number"]
+            first_segment = segments[0]
             extinf_values = [f["extinf"] for f in segments if "extinf" in f]
             target_duration = math.ceil(max(extinf_values)) if extinf_values else 3
+
+            # Calculate media sequence using adaptive logic for different MPD types
+            mpd_start_number = profile.get("segment_template_start_number")
+            if mpd_start_number and mpd_start_number >= 1000:
+                # Amazon-style: Use absolute segment numbering
+                sequence = first_segment.get("number", mpd_start_number)
+            else:
+                # Sky-style: Use time-based calculation if available
+                time_val = first_segment.get("time")
+                duration_val = first_segment.get("duration_mpd_timescale")
+                if time_val is not None and duration_val and duration_val > 0:
+                    calculated_sequence = math.floor(time_val / duration_val)
+                    # For live streams with very large sequence numbers, use modulo to keep reasonable range
+                    if mpd_dict.get("isLive", False) and calculated_sequence > 100000:
+                        sequence = calculated_sequence % 100000
+                    else:
+                        sequence = calculated_sequence
+                else:
+                    sequence = first_segment.get("number", 1)
+
             hls.extend(
                 [
                     f"#EXT-X-TARGETDURATION:{target_duration}",