diff --git a/unshackle/core/tracks/audio.py b/unshackle/core/tracks/audio.py
index 9a8f9e2f..f124d1ea 100644
--- a/unshackle/core/tracks/audio.py
+++ b/unshackle/core/tracks/audio.py
@@ -45,6 +45,7 @@ class Audio(Track):
         ALAC = "ALAC"  # https://en.wikipedia.org/wiki/Apple_Lossless_Audio_Codec
         FLAC = "FLAC"  # https://en.wikipedia.org/wiki/FLAC
         MP3 = "MP3"  # https://en.wikipedia.org/wiki/MP3
+        PCM = "PCM"  # https://en.wikipedia.org/wiki/Pulse-code_modulation
 
         @property
         def extension(self) -> str:
@@ -87,21 +88,6 @@ class Audio(Track):
                     pass
             raise ValueError(f"No MIME types matched any supported Audio Codecs in '{codecs}'")
 
-        @staticmethod
-        def from_netflix_profile(profile: str) -> Audio.Codec:
-            profile = profile.lower().strip()
-            if profile.startswith("heaac") or profile.startswith("xheaac"):
-                return Audio.Codec.AAC
-            if profile.startswith("dd-"):
-                return Audio.Codec.AC3
-            if profile.startswith("ddplus"):
-                return Audio.Codec.EC3
-            if profile.startswith("ac4"):
-                return Audio.Codec.AC4
-            if profile.startswith("playready-oggvorbis"):
-                return Audio.Codec.OGG
-            raise ValueError(f"The Content Profile '{profile}' is not a supported Audio Codec")
-
     def __init__(
         self,
         *args: Any,
diff --git a/unshackle/core/tracks/subtitle.py b/unshackle/core/tracks/subtitle.py
index 0f86ed8c..8a993f86 100644
--- a/unshackle/core/tracks/subtitle.py
+++ b/unshackle/core/tracks/subtitle.py
@@ -89,15 +89,6 @@ class Subtitle(Track):
                     pass
             raise ValueError(f"No MIME types matched any supported Subtitle Codecs in '{codecs}'")
 
-        @staticmethod
-        def from_netflix_profile(profile: str) -> Subtitle.Codec:
-            profile = profile.lower().strip()
-            if profile.startswith("webvtt"):
-                return Subtitle.Codec.WebVTT
-            if profile.startswith("dfxp"):
-                return Subtitle.Codec.TimedTextMarkupLang
-            raise ValueError(f"The Content Profile '{profile}' is not a supported Subtitle Codec")
-
     # WebVTT sanitization patterns (compiled once for performance)
     CUE_ID_PATTERN = re.compile(r"^[A-Za-z]+\d+$")
     TIMING_START_PATTERN = re.compile(r"^\d+:\d+[:\.]")
diff --git a/unshackle/core/tracks/video.py b/unshackle/core/tracks/video.py
index fc129b58..9b828006 100644
--- a/unshackle/core/tracks/video.py
+++ b/unshackle/core/tracks/video.py
@@ -27,6 +27,7 @@ class Video(Track):
     class Codec(str, Enum):
         AVC = "H.264"
         HEVC = "H.265"
+        VVC = "H.266"
         VC1 = "VC-1"
         VP8 = "VP8"
         VP9 = "VP9"
@@ -84,19 +85,6 @@ class Video(Track):
                     pass
             raise ValueError(f"No MIME types matched any supported Video Codecs in '{codecs}'")
 
-        @staticmethod
-        def from_netflix_profile(profile: str) -> Video.Codec:
-            profile = profile.lower().strip()
-            if profile.startswith(("h264", "playready-h264")):
-                return Video.Codec.AVC
-            if profile.startswith("hevc"):
-                return Video.Codec.HEVC
-            if profile.startswith("vp9"):
-                return Video.Codec.VP9
-            if profile.startswith("av1"):
-                return Video.Codec.AV1
-            raise ValueError(f"The Content Profile '{profile}' is not a supported Video Codec")
-
     class Range(str, Enum):
         SDR = "SDR"  # No Dynamic Range
         HLG = "HLG"  # https://en.wikipedia.org/wiki/Hybrid_log%E2%80%93gamma
diff --git a/unshackle/core/utils/gen_esn.py b/unshackle/core/utils/gen_esn.py
deleted file mode 100644
index 933d7aca..00000000
--- a/unshackle/core/utils/gen_esn.py
+++ /dev/null
@@ -1,30 +0,0 @@
-import logging
-import os
-import random
-from datetime import datetime, timedelta
-
-log = logging.getLogger("NF-ESN")
-
-
-def chrome_esn_generator() -> str:
-    ESN_GEN = "".join(random.choice("0123456789ABCDEF") for _ in range(30))
-    esn_file = ".esn"
-
-    def gen_file() -> None:
-        with open(esn_file, "w") as file:
-            file.write(f"NFCDIE-03-{ESN_GEN}")
-
-    if not os.path.isfile(esn_file):
-        log.warning("Generating a new Chrome ESN")
-        gen_file()
-
-    file_datetime = datetime.fromtimestamp(os.path.getmtime(esn_file))
-    time_diff = datetime.now() - file_datetime
-    if time_diff > timedelta(hours=6):
-        log.warning("Old ESN detected, Generating a new Chrome ESN")
-        gen_file()
-
-    with open(esn_file, "r") as f:
-        esn = f.read()
-
-    return esn