From ec2ecfe7b4f954229a813e27c2a1b913c77743c0 Mon Sep 17 00:00:00 2001
From: Andy <scene@scene.com>
Date: Sat, 7 Mar 2026 13:01:36 -0700
Subject: [PATCH] fix(ism): prevent duplicate track IDs for audio tracks with
 same lang/codec/bitrate

Include StreamIndex Name and Url attributes in the track ID hash to disambiguate tracks that share the same codec, language, bitrate, and QualityLevel index.
---
 unshackle/core/manifests/ism.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/unshackle/core/manifests/ism.py b/unshackle/core/manifests/ism.py
index b047f5e..816e2bd 100644
--- a/unshackle/core/manifests/ism.py
+++ b/unshackle/core/manifests/ism.py
@@ -145,7 +145,14 @@ class ISM:
                         fragment_time += duration_frag
 
                 track_id = hashlib.md5(
-                    f"{codec}-{track_lang}-{ql.get('Bitrate') or 0}-{ql.get('Index') or 0}".encode()
+                    "{codec}-{lang}-{bitrate}-{index}-{name}-{url}".format(
+                        codec=codec,
+                        lang=track_lang,
+                        bitrate=ql.get("Bitrate") or 0,
+                        index=ql.get("Index") or 0,
+                        name=stream_index.get("Name") or "",
+                        url=stream_index.get("Url") or "",
+                    ).encode()
                 ).hexdigest()
 
                 data = {