diff --git a/dom/base/ChromeUtils.cpp b/dom/base/ChromeUtils.cpp
index a0ea4b9b2712..035c905cc274 100644
--- a/dom/base/ChromeUtils.cpp
+++ b/dom/base/ChromeUtils.cpp
@@ -1033,14 +1033,17 @@ static WebIDLUtilityActorName UtilityActorNameToWebIDL(
     mozilla::UtilityActorName aType) {
   // Max is the value of the last enum, not the length, so add one.
   static_assert(WebIDLUtilityActorNameValues::Count ==
-                    static_cast<size_t>(UtilityActorName::AudioDecoder) + 1,
+                    static_cast<size_t>(UtilityActorName::AudioDecoder_WMF) + 1,
                 "In order for this static cast to be okay, "
                 "UtilityActorName must match UtilityActorName exactly");
 
   // These must match the similar ones in ProcInfo.h and ChromeUtils.webidl
   switch (aType) {
     UTILITYACTORNAME_TO_WEBIDL_CASE(Unknown, Unknown);
-    UTILITYACTORNAME_TO_WEBIDL_CASE(AudioDecoder, AudioDecoder);
+    UTILITYACTORNAME_TO_WEBIDL_CASE(AudioDecoder_Generic, AudioDecoder_Generic);
+    UTILITYACTORNAME_TO_WEBIDL_CASE(AudioDecoder_AppleMedia,
+                                    AudioDecoder_AppleMedia);
+    UTILITYACTORNAME_TO_WEBIDL_CASE(AudioDecoder_WMF, AudioDecoder_WMF);
   }
 
   MOZ_ASSERT(false, "Unhandled case in WebIDLUtilityActorName");
diff --git a/dom/chrome-webidl/ChromeUtils.webidl b/dom/chrome-webidl/ChromeUtils.webidl
index 72f0551be991..8d1b90dcb4fb 100644
--- a/dom/chrome-webidl/ChromeUtils.webidl
+++ b/dom/chrome-webidl/ChromeUtils.webidl
@@ -706,7 +706,9 @@ dictionary WindowInfoDictionary {
  */
 enum WebIDLUtilityActorName {
   "unknown",
-  "audioDecoder",
+  "audioDecoder_Generic",
+  "audioDecoder_AppleMedia",
+  "audioDecoder_WMF",
 };
 
 dictionary UtilityActorsDictionary {
diff --git a/dom/ipc/ContentChild.cpp b/dom/ipc/ContentChild.cpp
index f42544ea8901..b981142ba840 100644
--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -4906,7 +4906,7 @@ bool StartOpenBSDSandbox(GeckoProcessType type, ipc::SandboxingKind kind) {
       MOZ_RELEASE_ASSERT(kind <= SandboxingKind::COUNT,
                          "Should define a sandbox");
       switch (kind) {
-        case ipc::SandboxingKind::UTILITY_AUDIO_DECODING:
+        case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
           OpenBSDFindPledgeUnveilFilePath("pledge.utility-audioDecoder",
                                           pledgeFile);
           OpenBSDFindPledgeUnveilFilePath("unveil.utility-audioDecoder",
diff --git a/dom/media/ipc/RemoteDecodeUtils.cpp b/dom/media/ipc/RemoteDecodeUtils.cpp
new file mode 100644
index 000000000000..a9c86aff825e
--- /dev/null
+++ b/dom/media/ipc/RemoteDecodeUtils.cpp
@@ -0,0 +1,76 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "RemoteDecodeUtils.h"
+#include "mozilla/ipc/UtilityProcessChild.h"
+
+namespace mozilla {
+
+using SandboxingKind = ipc::SandboxingKind;
+
+SandboxingKind GetCurrentSandboxingKind() {
+  MOZ_ASSERT(XRE_IsUtilityProcess());
+  return ipc::UtilityProcessChild::GetSingleton()->mSandbox;
+}
+
+SandboxingKind GetSandboxingKindFromLocation(RemoteDecodeIn aLocation) {
+  switch (aLocation) {
+    case RemoteDecodeIn::UtilityProcess_Generic:
+      return SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC;
+#ifdef MOZ_APPLEMEDIA
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+      return SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA;
+      break;
+#endif
+#ifdef XP_WIN
+    case RemoteDecodeIn::UtilityProcess_WMF:
+      return SandboxingKind::UTILITY_AUDIO_DECODING_WMF;
+#endif
+    default:
+      MOZ_ASSERT_UNREACHABLE("Unsupported RemoteDecodeIn");
+      return SandboxingKind::COUNT;
+  }
+}
+
+RemoteDecodeIn GetRemoteDecodeInFromKind(SandboxingKind aKind) {
+  switch (aKind) {
+    case SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
+      return RemoteDecodeIn::UtilityProcess_Generic;
+#ifdef MOZ_APPLEMEDIA
+    case SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA:
+      return RemoteDecodeIn::UtilityProcess_AppleMedia;
+#endif
+#ifdef XP_WIN
+    case SandboxingKind::UTILITY_AUDIO_DECODING_WMF:
+      return RemoteDecodeIn::UtilityProcess_WMF;
+#endif
+    default:
+      MOZ_ASSERT_UNREACHABLE("Unsupported SandboxingKind");
+      return RemoteDecodeIn::Unspecified;
+  }
+}
+
+const char* RemoteDecodeInToStr(RemoteDecodeIn aLocation) {
+  switch (aLocation) {
+    case RemoteDecodeIn::RddProcess:
+      return "RDD";
+    case RemoteDecodeIn::GpuProcess:
+      return "GPU";
+    case RemoteDecodeIn::UtilityProcess_Generic:
+      return "Utility Generic";
+#ifdef MOZ_APPLEMEDIA
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+      return "Utility AppleMedia";
+#endif
+#ifdef XP_WIN
+    case RemoteDecodeIn::UtilityProcess_WMF:
+      return "Utility WMF";
+#endif
+    default:
+      MOZ_ASSERT_UNREACHABLE("Unsupported RemoteDecodeIn");
+      return "Unknown";
+  }
+}
+
+}  // namespace mozilla
diff --git a/dom/media/ipc/RemoteDecodeUtils.h b/dom/media/ipc/RemoteDecodeUtils.h
new file mode 100644
index 000000000000..30d656bf2bea
--- /dev/null
+++ b/dom/media/ipc/RemoteDecodeUtils.h
@@ -0,0 +1,28 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_IPC_REMOTEDECODEUTILS_H_
+#define DOM_MEDIA_IPC_REMOTEDECODEUTILS_H_
+
+#include "mozilla/Logging.h"
+#include "mozilla/RemoteDecoderManagerChild.h"
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
+
+namespace mozilla {
+
+inline LazyLogModule gRemoteDecodeLog{"RemoteDecode"};
+
+// Return the sandboxing kind of the current utility process. Should only be
+// called on the utility process.
+ipc::SandboxingKind GetCurrentSandboxingKind();
+
+ipc::SandboxingKind GetSandboxingKindFromLocation(RemoteDecodeIn aLocation);
+
+RemoteDecodeIn GetRemoteDecodeInFromKind(ipc::SandboxingKind aKind);
+
+const char* RemoteDecodeInToStr(RemoteDecodeIn aLocation);
+
+}  // namespace mozilla
+
+#endif  // DOM_MEDIA_IPC_REMOTEDECODEUTILS_H_
diff --git a/dom/media/ipc/RemoteDecoderChild.cpp b/dom/media/ipc/RemoteDecoderChild.cpp
index a3b2f358cc61..d20856f66724 100644
--- a/dom/media/ipc/RemoteDecoderChild.cpp
+++ b/dom/media/ipc/RemoteDecoderChild.cpp
@@ -7,6 +7,8 @@
 
 #include "RemoteDecoderManagerChild.h"
 
+#include "mozilla/RemoteDecodeUtils.h"
+
 namespace mozilla {
 
 RemoteDecoderChild::RemoteDecoderChild(RemoteDecodeIn aLocation)
@@ -99,13 +101,11 @@ RefPtr<MediaDataDecoder::InitPromise> RemoteDecoderChild::Init() {
               return;
             }
             const auto& initResponse = aResponse.get_InitCompletionIPDL();
-            mDescription =
-                initResponse.decoderDescription() +
-                (GetManager()->Location() == RemoteDecodeIn::UtilityProcess
-                     ? " (Utility remote)"_ns
-                 : GetManager()->Location() == RemoteDecodeIn::RddProcess
-                     ? " (RDD remote)"_ns
-                     : " (GPU remote)"_ns);
+            mDescription = initResponse.decoderDescription();
+            mDescription.Append(" (");
+            mDescription.Append(RemoteDecodeInToStr(GetManager()->Location()));
+            mDescription.Append(" remote)");
+
             mIsHardwareAccelerated = initResponse.hardware();
             mHardwareAcceleratedReason = initResponse.hardwareReason();
             mConversion = initResponse.conversion();
diff --git a/dom/media/ipc/RemoteDecoderManagerChild.cpp b/dom/media/ipc/RemoteDecoderManagerChild.cpp
index 6709dff5c3c8..c9c059dc688a 100644
--- a/dom/media/ipc/RemoteDecoderManagerChild.cpp
+++ b/dom/media/ipc/RemoteDecoderManagerChild.cpp
@@ -19,6 +19,7 @@
 #include "mozilla/ipc/PBackgroundChild.h"
 #include "mozilla/ipc/Endpoint.h"
 #include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/ipc/UtilityAudioDecoderChild.h"
 #include "nsContentUtils.h"
 #include "nsIObserver.h"
 #include "mozilla/StaticPrefs_media.h"
@@ -192,7 +193,9 @@ RemoteDecoderManagerChild* RemoteDecoderManagerChild::GetSingleton(
   switch (aLocation) {
     case RemoteDecodeIn::GpuProcess:
     case RemoteDecodeIn::RddProcess:
-    case RemoteDecodeIn::UtilityProcess:
+    case RemoteDecodeIn::UtilityProcess_Generic:
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+    case RemoteDecodeIn::UtilityProcess_WMF:
       return sRemoteDecoderManagerChildForProcesses[aLocation];
     default:
       MOZ_CRASH("Unexpected RemoteDecode variant");
@@ -214,7 +217,9 @@ bool RemoteDecoderManagerChild::Supports(
   switch (aLocation) {
     case RemoteDecodeIn::GpuProcess:
     case RemoteDecodeIn::RddProcess:
-    case RemoteDecodeIn::UtilityProcess: {
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+    case RemoteDecodeIn::UtilityProcess_Generic:
+    case RemoteDecodeIn::UtilityProcess_WMF: {
       StaticMutexAutoLock lock(sProcessSupportedMutex);
       supported = sProcessSupported[aLocation];
       break;
@@ -225,8 +230,10 @@ bool RemoteDecoderManagerChild::Supports(
   if (!supported) {
     // We haven't received the correct information yet from either the GPU or
     // the RDD process nor the Utility process.
-    if (aLocation == RemoteDecodeIn::UtilityProcess) {
-      LaunchUtilityProcessIfNeeded();
+    if (aLocation == RemoteDecodeIn::UtilityProcess_Generic ||
+        aLocation == RemoteDecodeIn::UtilityProcess_AppleMedia ||
+        aLocation == RemoteDecodeIn::UtilityProcess_WMF) {
+      LaunchUtilityProcessIfNeeded(aLocation);
     }
     if (aLocation == RemoteDecodeIn::RddProcess) {
       // Ensure the RDD process got started.
@@ -274,10 +281,13 @@ RemoteDecoderManagerChild::CreateAudioDecoder(
         __func__);
   }
 
-  bool useUtilityAudioDecoding = StaticPrefs::media_utility_process_enabled() &&
-                                 aLocation == RemoteDecodeIn::UtilityProcess;
+  bool useUtilityAudioDecoding =
+      StaticPrefs::media_utility_process_enabled() &&
+      (aLocation == RemoteDecodeIn::UtilityProcess_Generic ||
+       aLocation == RemoteDecodeIn::UtilityProcess_AppleMedia ||
+       aLocation == RemoteDecodeIn::UtilityProcess_WMF);
   RefPtr<GenericNonExclusivePromise> launchPromise =
-      useUtilityAudioDecoding ? LaunchUtilityProcessIfNeeded()
+      useUtilityAudioDecoding ? LaunchUtilityProcessIfNeeded(aLocation)
                               : LaunchRDDProcessIfNeeded();
 
   return launchPromise->Then(
@@ -482,7 +492,8 @@ RemoteDecoderManagerChild::LaunchRDDProcessIfNeeded() {
 
 /* static */
 RefPtr<GenericNonExclusivePromise>
-RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded() {
+RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded(
+    RemoteDecodeIn aLocation) {
   MOZ_DIAGNOSTIC_ASSERT(XRE_IsContentProcess(),
                         "Only supported from a content process.");
 
@@ -494,7 +505,7 @@ RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded() {
   }
 
   StaticMutexAutoLock lock(sLaunchMutex);
-  auto& utilityLaunchPromise = sLaunchPromises[RemoteDecodeIn::UtilityProcess];
+  auto& utilityLaunchPromise = sLaunchPromises[aLocation];
 
   if (utilityLaunchPromise) {
     return utilityLaunchPromise;
@@ -515,8 +526,9 @@ RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded() {
   // IPC connections between *this* content process and the Utility process.
 
   RefPtr<GenericNonExclusivePromise> p = InvokeAsync(
-      managerThread, __func__, []() -> RefPtr<GenericNonExclusivePromise> {
-        auto* rps = GetSingleton(RemoteDecodeIn::UtilityProcess);
+      managerThread, __func__,
+      [aLocation]() -> RefPtr<GenericNonExclusivePromise> {
+        auto* rps = GetSingleton(aLocation);
         if (rps && rps->CanSend()) {
           return GenericNonExclusivePromise::CreateAndResolve(true, __func__);
         }
@@ -528,36 +540,37 @@ RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded() {
                                                              __func__);
         }
 
-        return bgActor->SendEnsureUtilityProcessAndCreateBridge()->Then(
-            managerThread, __func__,
-            [](ipc::PBackgroundChild::
-                   EnsureUtilityProcessAndCreateBridgePromise::
-                       ResolveOrRejectValue&& aResult)
-                -> RefPtr<GenericNonExclusivePromise> {
-              nsCOMPtr<nsISerialEventTarget> managerThread = GetManagerThread();
-              if (!managerThread || aResult.IsReject()) {
-                // The parent process died or we got shutdown
-                return GenericNonExclusivePromise::CreateAndReject(
-                    NS_ERROR_FAILURE, __func__);
-              }
-              nsresult rv = Get<0>(aResult.ResolveValue());
-              if (NS_FAILED(rv)) {
-                return GenericNonExclusivePromise::CreateAndReject(rv,
-                                                                   __func__);
-              }
-              OpenRemoteDecoderManagerChildForProcess(
-                  Get<1>(std::move(aResult.ResolveValue())),
-                  RemoteDecodeIn::UtilityProcess);
-              return GenericNonExclusivePromise::CreateAndResolve(true,
-                                                                  __func__);
-            });
+        return bgActor->SendEnsureUtilityProcessAndCreateBridge(aLocation)
+            ->Then(managerThread, __func__,
+                   [aLocation](ipc::PBackgroundChild::
+                                   EnsureUtilityProcessAndCreateBridgePromise::
+                                       ResolveOrRejectValue&& aResult)
+                       -> RefPtr<GenericNonExclusivePromise> {
+                     nsCOMPtr<nsISerialEventTarget> managerThread =
+                         GetManagerThread();
+                     if (!managerThread || aResult.IsReject()) {
+                       // The parent process died or we got shutdown
+                       return GenericNonExclusivePromise::CreateAndReject(
+                           NS_ERROR_FAILURE, __func__);
+                     }
+                     nsresult rv = Get<0>(aResult.ResolveValue());
+                     if (NS_FAILED(rv)) {
+                       return GenericNonExclusivePromise::CreateAndReject(
+                           rv, __func__);
+                     }
+                     OpenRemoteDecoderManagerChildForProcess(
+                         Get<1>(std::move(aResult.ResolveValue())), aLocation);
+                     return GenericNonExclusivePromise::CreateAndResolve(
+                         true, __func__);
+                   });
       });
 
   p = p->Then(
       GetCurrentSerialEventTarget(), __func__,
-      [](const GenericNonExclusivePromise::ResolveOrRejectValue& aResult) {
+      [aLocation](
+          const GenericNonExclusivePromise::ResolveOrRejectValue& aResult) {
         StaticMutexAutoLock lock(sLaunchMutex);
-        sLaunchPromises[RemoteDecodeIn::UtilityProcess] = nullptr;
+        sLaunchPromises[aLocation] = nullptr;
         return GenericNonExclusivePromise::CreateAndResolveOrReject(aResult,
                                                                     __func__);
       });
@@ -598,7 +611,9 @@ TrackSupportSet RemoteDecoderManagerChild::GetTrackSupport(
 #endif
       return s;
     }
-    case RemoteDecodeIn::UtilityProcess:
+    case RemoteDecodeIn::UtilityProcess_Generic:
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+    case RemoteDecodeIn::UtilityProcess_WMF:
       return StaticPrefs::media_utility_process_enabled()
                  ? TrackSupportSet{TrackSupport::Audio}
                  : TrackSupportSet{TrackSupport::None};
@@ -647,7 +662,9 @@ RemoteDecoderManagerChild::RemoteDecoderManagerChild(RemoteDecodeIn aLocation)
     : mLocation(aLocation) {
   MOZ_ASSERT(mLocation == RemoteDecodeIn::GpuProcess ||
              mLocation == RemoteDecodeIn::RddProcess ||
-             mLocation == RemoteDecodeIn::UtilityProcess);
+             mLocation == RemoteDecodeIn::UtilityProcess_Generic ||
+             mLocation == RemoteDecodeIn::UtilityProcess_AppleMedia ||
+             mLocation == RemoteDecodeIn::UtilityProcess_WMF);
 }
 
 /* static */
@@ -809,7 +826,9 @@ void RemoteDecoderManagerChild::SetSupported(
   switch (aLocation) {
     case RemoteDecodeIn::GpuProcess:
     case RemoteDecodeIn::RddProcess:
-    case RemoteDecodeIn::UtilityProcess: {
+    case RemoteDecodeIn::UtilityProcess_AppleMedia:
+    case RemoteDecodeIn::UtilityProcess_Generic:
+    case RemoteDecodeIn::UtilityProcess_WMF: {
       StaticMutexAutoLock lock(sProcessSupportedMutex);
       sProcessSupported[aLocation] = Some(aSupported);
       break;
diff --git a/dom/media/ipc/RemoteDecoderManagerChild.h b/dom/media/ipc/RemoteDecoderManagerChild.h
index 435490c8e357..ecbc43973bcf 100644
--- a/dom/media/ipc/RemoteDecoderManagerChild.h
+++ b/dom/media/ipc/RemoteDecoderManagerChild.h
@@ -12,6 +12,7 @@
 #include "mozilla/EnumTypeTraits.h"
 #include "mozilla/PRemoteDecoderManagerChild.h"
 #include "mozilla/layers/VideoBridgeUtils.h"
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
 
 namespace mozilla {
 
@@ -22,7 +23,9 @@ enum class RemoteDecodeIn {
   Unspecified,
   RddProcess,
   GpuProcess,
-  UtilityProcess,
+  UtilityProcess_Generic,
+  UtilityProcess_AppleMedia,
+  UtilityProcess_WMF,
 
   SENTINEL,
 };
@@ -127,7 +130,8 @@ class RemoteDecoderManagerChild final
   static void OpenRemoteDecoderManagerChildForProcess(
       Endpoint<PRemoteDecoderManagerChild>&& aEndpoint,
       RemoteDecodeIn aLocation);
-  static RefPtr<GenericNonExclusivePromise> LaunchUtilityProcessIfNeeded();
+  static RefPtr<GenericNonExclusivePromise> LaunchUtilityProcessIfNeeded(
+      RemoteDecodeIn aLocation);
 
   RefPtr<RemoteDecoderManagerChild> mIPDLSelfRef;
   // The location for decoding, Rdd or Gpu process.
diff --git a/dom/media/ipc/moz.build b/dom/media/ipc/moz.build
index e638f904a80f..53424922f7f7 100644
--- a/dom/media/ipc/moz.build
+++ b/dom/media/ipc/moz.build
@@ -26,6 +26,7 @@ EXPORTS.mozilla += [
     "RemoteDecoderManagerParent.h",
     "RemoteDecoderModule.h",
     "RemoteDecoderParent.h",
+    "RemoteDecodeUtils.h",
     "RemoteImageHolder.h",
     "RemoteMediaData.h",
     "RemoteMediaDataDecoder.h",
@@ -48,6 +49,7 @@ SOURCES += [
     "RemoteDecoderManagerParent.cpp",
     "RemoteDecoderModule.cpp",
     "RemoteDecoderParent.cpp",
+    "RemoteDecodeUtils.cpp",
     "RemoteImageHolder.cpp",
     "RemoteMediaData.cpp",
     "RemoteMediaDataDecoder.cpp",
diff --git a/dom/media/platforms/PDMFactory.cpp b/dom/media/platforms/PDMFactory.cpp
index 0f3fad38d864..94ea88b965e8 100644
--- a/dom/media/platforms/PDMFactory.cpp
+++ b/dom/media/platforms/PDMFactory.cpp
@@ -36,6 +36,8 @@
 #include "nsIXULRuntime.h"  // for BrowserTabsRemoteAutostart
 #include "nsPrintfCString.h"
 
+#include "mozilla/ipc/UtilityAudioDecoderParent.h"
+
 #ifdef XP_WIN
 #  include "WMFDecoderModule.h"
 #  include "mozilla/WindowsVersion.h"
@@ -562,38 +564,44 @@ void PDMFactory::CreateRddPDMs() {
 }
 
 void PDMFactory::CreateUtilityPDMs() {
+  const ipc::SandboxingKind aKind =
+      ipc::UtilityAudioDecoderParent::GetSandboxingKind();
 #ifdef XP_WIN
   if (StaticPrefs::media_wmf_enabled() &&
-      StaticPrefs::media_utility_wmf_enabled()) {
+      StaticPrefs::media_utility_wmf_enabled() &&
+      aKind == ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF) {
     CreateAndStartupPDM<WMFDecoderModule>();
   }
 #endif
 #ifdef MOZ_APPLEMEDIA
-  if (StaticPrefs::media_utility_applemedia_enabled()) {
+  if (StaticPrefs::media_utility_applemedia_enabled() &&
+      aKind == ipc::SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA) {
     CreateAndStartupPDM<AppleDecoderModule>();
   }
 #endif
+  if (aKind == ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC) {
 #ifdef MOZ_FFVPX
-  if (StaticPrefs::media_ffvpx_enabled() &&
-      StaticPrefs::media_utility_ffvpx_enabled()) {
-    CreateAndStartupPDM<FFVPXRuntimeLinker>();
-  }
+    if (StaticPrefs::media_ffvpx_enabled() &&
+        StaticPrefs::media_utility_ffvpx_enabled()) {
+      CreateAndStartupPDM<FFVPXRuntimeLinker>();
+    }
 #endif
 #ifdef MOZ_FFMPEG
-  if (StaticPrefs::media_ffmpeg_enabled() &&
-      StaticPrefs::media_utility_ffmpeg_enabled() &&
-      !CreateAndStartupPDM<FFmpegRuntimeLinker>()) {
-    mFailureFlags += GetFailureFlagBasedOnFFmpegStatus(
-        FFmpegRuntimeLinker::LinkStatusCode());
-  }
+    if (StaticPrefs::media_ffmpeg_enabled() &&
+        StaticPrefs::media_utility_ffmpeg_enabled() &&
+        !CreateAndStartupPDM<FFmpegRuntimeLinker>()) {
+      mFailureFlags += GetFailureFlagBasedOnFFmpegStatus(
+          FFmpegRuntimeLinker::LinkStatusCode());
+    }
 #endif
 #ifdef MOZ_WIDGET_ANDROID
-  if (StaticPrefs::media_utility_android_media_codec_enabled()) {
-    StartupPDM(AndroidDecoderModule::Create(),
-               StaticPrefs::media_android_media_codec_preferred());
-  }
+    if (StaticPrefs::media_utility_android_media_codec_enabled()) {
+      StartupPDM(AndroidDecoderModule::Create(),
+                 StaticPrefs::media_android_media_codec_preferred());
+    }
 #endif
-  CreateAndStartupPDM<AgnosticDecoderModule>();
+    CreateAndStartupPDM<AgnosticDecoderModule>();
+  }
 }
 
 void PDMFactory::CreateContentPDMs() {
@@ -606,7 +614,18 @@ void PDMFactory::CreateContentPDMs() {
   }
 
   if (StaticPrefs::media_utility_process_enabled()) {
-    CreateAndStartupPDM<RemoteDecoderModule>(RemoteDecodeIn::UtilityProcess);
+#ifdef MOZ_APPLEMEDIA
+    CreateAndStartupPDM<RemoteDecoderModule>(
+        RemoteDecodeIn::UtilityProcess_AppleMedia);
+#endif
+#ifdef XP_WIN
+    CreateAndStartupPDM<RemoteDecoderModule>(
+        RemoteDecodeIn::UtilityProcess_WMF);
+#endif
+    // WMF and AppleMedia should be created before Generic because the order
+    // affects what decoder module would be chose first.
+    CreateAndStartupPDM<RemoteDecoderModule>(
+        RemoteDecodeIn::UtilityProcess_Generic);
   }
 
 #ifdef XP_WIN
diff --git a/dom/media/platforms/PDMFactory.h b/dom/media/platforms/PDMFactory.h
index 95b5df8a0938..c56c11c50654 100644
--- a/dom/media/platforms/PDMFactory.h
+++ b/dom/media/platforms/PDMFactory.h
@@ -14,6 +14,7 @@
 #  include "mozilla/EnumSet.h"
 #  include "mozilla/MozPromise.h"
 #  include "mozilla/RefPtr.h"
+#  include "mozilla/ipc/UtilityProcessSandboxing.h"
 #  include "nsISupports.h"
 #  include "nsStringFwd.h"
 #  include "nsTArray.h"
diff --git a/ipc/glue/BackgroundParentImpl.cpp b/ipc/glue/BackgroundParentImpl.cpp
index d230a85b248c..d68cae35996a 100644
--- a/ipc/glue/BackgroundParentImpl.cpp
+++ b/ipc/glue/BackgroundParentImpl.cpp
@@ -13,6 +13,7 @@
 #include "mozilla/Assertions.h"
 #include "mozilla/RDDProcessManager.h"
 #include "mozilla/ipc/UtilityProcessManager.h"
+#include "mozilla/RemoteDecodeUtils.h"
 #include "mozilla/RefPtr.h"
 #include "mozilla/dom/BackgroundSessionStorageServiceParent.h"
 #include "mozilla/dom/ClientManagerActors.h"
@@ -1372,6 +1373,7 @@ BackgroundParentImpl::RecvEnsureRDDProcessAndCreateBridge(
 
 mozilla::ipc::IPCResult
 BackgroundParentImpl::RecvEnsureUtilityProcessAndCreateBridge(
+    const RemoteDecodeIn& aLocation,
     EnsureUtilityProcessAndCreateBridgeResolver&& aResolver) {
   base::ProcessId otherPid = OtherPid();
   nsCOMPtr<nsISerialEventTarget> managerThread = GetCurrentSerialEventTarget();
@@ -1380,7 +1382,7 @@ BackgroundParentImpl::RecvEnsureUtilityProcessAndCreateBridge(
   }
   NS_DispatchToMainThread(NS_NewRunnableFunction(
       "BackgroundParentImpl::RecvEnsureUtilityProcessAndCreateBridge()",
-      [aResolver, managerThread, otherPid]() {
+      [aResolver, managerThread, otherPid, aLocation]() {
         RefPtr<UtilityProcessManager> upm =
             UtilityProcessManager::GetSingleton();
         using Type = Tuple<const nsresult&,
@@ -1389,18 +1391,20 @@ BackgroundParentImpl::RecvEnsureUtilityProcessAndCreateBridge(
           aResolver(Type(NS_ERROR_NOT_AVAILABLE,
                          Endpoint<PRemoteDecoderManagerChild>()));
         } else {
-          upm->StartAudioDecoding(otherPid)->Then(
-              managerThread, __func__,
-              [resolver = std::move(aResolver)](
-                  mozilla::ipc::UtilityProcessManager::AudioDecodingPromise::
-                      ResolveOrRejectValue&& aValue) mutable {
-                if (aValue.IsReject()) {
-                  resolver(Type(aValue.RejectValue(),
-                                Endpoint<PRemoteDecoderManagerChild>()));
-                  return;
-                }
-                resolver(Type(NS_OK, std::move(aValue.ResolveValue())));
-              });
+          SandboxingKind sbKind = GetSandboxingKindFromLocation(aLocation);
+          upm->StartAudioDecoding(otherPid, sbKind)
+              ->Then(managerThread, __func__,
+                     [resolver = aResolver](
+                         mozilla::ipc::UtilityProcessManager::
+                             AudioDecodingPromise::ResolveOrRejectValue&&
+                                 aValue) mutable {
+                       if (aValue.IsReject()) {
+                         resolver(Type(aValue.RejectValue(),
+                                       Endpoint<PRemoteDecoderManagerChild>()));
+                         return;
+                       }
+                       resolver(Type(NS_OK, std::move(aValue.ResolveValue())));
+                     });
         }
       }));
   return IPC_OK();
diff --git a/ipc/glue/BackgroundParentImpl.h b/ipc/glue/BackgroundParentImpl.h
index 2bad806f128c..0303994852a9 100644
--- a/ipc/glue/BackgroundParentImpl.h
+++ b/ipc/glue/BackgroundParentImpl.h
@@ -386,6 +386,7 @@ class BackgroundParentImpl : public PBackgroundParent {
       EnsureRDDProcessAndCreateBridgeResolver&& aResolver) override;
 
   mozilla::ipc::IPCResult RecvEnsureUtilityProcessAndCreateBridge(
+      const RemoteDecodeIn& aLocation,
       EnsureUtilityProcessAndCreateBridgeResolver&& aResolver) override;
 
   bool DeallocPEndpointForReportParent(
diff --git a/ipc/glue/PBackground.ipdl b/ipc/glue/PBackground.ipdl
index 0cc202897553..24c6ea3b6cf7 100644
--- a/ipc/glue/PBackground.ipdl
+++ b/ipc/glue/PBackground.ipdl
@@ -76,6 +76,8 @@ using mozilla::dom::cache::Namespace
 
 using class mozilla::dom::SSCacheCopy from "mozilla/dom/PBackgroundSessionStorageCache.h";
 
+using mozilla::RemoteDecodeIn from "mozilla/RemoteDecoderManagerChild.h";
+
 namespace mozilla {
 namespace ipc {
 
@@ -297,7 +299,7 @@ parent:
   async EnsureRDDProcessAndCreateBridge()
       returns (nsresult rv, Endpoint<PRemoteDecoderManagerChild> aEndpoint);
 
-  async EnsureUtilityProcessAndCreateBridge()
+  async EnsureUtilityProcessAndCreateBridge(RemoteDecodeIn aLocation)
       returns (nsresult rv, Endpoint<PRemoteDecoderManagerChild> aEndpoint);
 
   async PWebSocketConnection(uint32_t aListenerId);
diff --git a/ipc/glue/PUtilityAudioDecoder.ipdl b/ipc/glue/PUtilityAudioDecoder.ipdl
index aeaf7b2b6b3e..740a2227ee16 100644
--- a/ipc/glue/PUtilityAudioDecoder.ipdl
+++ b/ipc/glue/PUtilityAudioDecoder.ipdl
@@ -6,6 +6,7 @@
 include protocol PRemoteDecoderManager;
 
 using mozilla::media::MediaCodecsSupported from "MediaCodecsSupport.h";
+using mozilla::RemoteDecodeIn from "mozilla/RemoteDecoderManagerChild.h";
 
 namespace mozilla {
 
@@ -20,7 +21,7 @@ parent:
             Endpoint<PRemoteDecoderManagerParent> endpoint);
 
 child:
-  async UpdateMediaCodecsSupported(MediaCodecsSupported aSupported);
+  async UpdateMediaCodecsSupported(RemoteDecodeIn aLocation, MediaCodecsSupported aSupported);
 
 };
 
diff --git a/ipc/glue/UtilityAudioDecoderChild.cpp b/ipc/glue/UtilityAudioDecoderChild.cpp
index f9b057606139..a8e1f98c3f10 100644
--- a/ipc/glue/UtilityAudioDecoderChild.cpp
+++ b/ipc/glue/UtilityAudioDecoderChild.cpp
@@ -6,20 +6,24 @@
 
 #include "UtilityAudioDecoderChild.h"
 
+#include "base/basictypes.h"
 #include "mozilla/AppShutdown.h"
 #include "mozilla/dom/ContentParent.h"
 
 namespace mozilla::ipc {
 
-static StaticRefPtr<UtilityAudioDecoderChild> sAudioDecoderChild;
+static EnumeratedArray<SandboxingKind, SandboxingKind::COUNT,
+                       StaticRefPtr<UtilityAudioDecoderChild>>
+    sAudioDecoderChilds;
 
-UtilityAudioDecoderChild::UtilityAudioDecoderChild() {
+UtilityAudioDecoderChild::UtilityAudioDecoderChild(SandboxingKind aKind)
+    : mSandbox(aKind) {
   MOZ_ASSERT(NS_IsMainThread());
 }
 
 void UtilityAudioDecoderChild::ActorDestroy(ActorDestroyReason aReason) {
   MOZ_ASSERT(NS_IsMainThread());
-  sAudioDecoderChild = nullptr;
+  sAudioDecoderChilds[mSandbox] = nullptr;
 }
 
 void UtilityAudioDecoderChild::Bind(
@@ -29,20 +33,22 @@ void UtilityAudioDecoderChild::Bind(
 }
 
 /* static */
-RefPtr<UtilityAudioDecoderChild> UtilityAudioDecoderChild::GetSingleton() {
+RefPtr<UtilityAudioDecoderChild> UtilityAudioDecoderChild::GetSingleton(
+    SandboxingKind aKind) {
   MOZ_ASSERT(NS_IsMainThread());
   bool shutdown = AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown);
-  if (!sAudioDecoderChild && !shutdown) {
-    sAudioDecoderChild = new UtilityAudioDecoderChild();
+  if (!sAudioDecoderChilds[aKind] && !shutdown) {
+    sAudioDecoderChilds[aKind] = new UtilityAudioDecoderChild(aKind);
   }
-  return sAudioDecoderChild;
+  return sAudioDecoderChilds[aKind];
 }
 
 mozilla::ipc::IPCResult
 UtilityAudioDecoderChild::RecvUpdateMediaCodecsSupported(
+    const RemoteDecodeIn& aLocation,
     const media::MediaCodecsSupported& aSupported) {
-  dom::ContentParent::BroadcastMediaCodecsSupportedUpdate(
-      RemoteDecodeIn::UtilityProcess, aSupported);
+  dom::ContentParent::BroadcastMediaCodecsSupportedUpdate(aLocation,
+                                                          aSupported);
   return IPC_OK();
 }
 
diff --git a/ipc/glue/UtilityAudioDecoderChild.h b/ipc/glue/UtilityAudioDecoderChild.h
index a3cf97b076b6..3b5ebdc00db5 100644
--- a/ipc/glue/UtilityAudioDecoderChild.h
+++ b/ipc/glue/UtilityAudioDecoderChild.h
@@ -11,6 +11,7 @@
 
 #include "mozilla/ipc/Endpoint.h"
 #include "mozilla/ipc/UtilityProcessParent.h"
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
 #include "mozilla/ipc/PUtilityAudioDecoderChild.h"
 
 #include "PDMFactory.h"
@@ -24,9 +25,25 @@ class UtilityAudioDecoderChild final : public PUtilityAudioDecoderChild {
   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(UtilityAudioDecoderChild, override);
 
   mozilla::ipc::IPCResult RecvUpdateMediaCodecsSupported(
+      const RemoteDecodeIn& aLocation,
       const media::MediaCodecsSupported& aSupported);
 
-  UtilityActorName GetActorName() { return UtilityActorName::AudioDecoder; }
+  UtilityActorName GetActorName() {
+    switch (mSandbox) {
+      case UTILITY_AUDIO_DECODING_GENERIC:
+        return UtilityActorName::AudioDecoder_Generic;
+#ifdef MOZ_APPLEMEDIA
+      case UTILITY_AUDIO_DECODING_APPLE_MEDIA:
+        return UtilityActorName::AudioDecoder_AppleMedia;
+#endif
+#ifdef XP_WIN
+      case UTILITY_AUDIO_DECODING_WMF:
+        return UtilityActorName::AudioDecoder_WMF;
+#endif
+      default:
+        MOZ_CRASH("Unexpected mSandbox for GetActorName()");
+    }
+  }
 
   nsresult BindToUtilityProcess(RefPtr<UtilityProcessParent> aUtilityParent) {
     Endpoint<PUtilityAudioDecoderChild> utilityAudioDecoderChildEnd;
@@ -54,11 +71,13 @@ class UtilityAudioDecoderChild final : public PUtilityAudioDecoderChild {
 
   void Bind(Endpoint<PUtilityAudioDecoderChild>&& aEndpoint);
 
-  static RefPtr<UtilityAudioDecoderChild> GetSingleton();
+  static RefPtr<UtilityAudioDecoderChild> GetSingleton(SandboxingKind aKind);
 
  private:
-  UtilityAudioDecoderChild();
+  explicit UtilityAudioDecoderChild(SandboxingKind aKind);
   ~UtilityAudioDecoderChild() = default;
+
+  const SandboxingKind mSandbox;
 };
 
 }  // namespace mozilla::ipc
diff --git a/ipc/glue/UtilityAudioDecoderParent.cpp b/ipc/glue/UtilityAudioDecoderParent.cpp
index 6bae76ca932c..45adcd0f8406 100644
--- a/ipc/glue/UtilityAudioDecoderParent.cpp
+++ b/ipc/glue/UtilityAudioDecoderParent.cpp
@@ -25,6 +25,9 @@
 #  include "AndroidDecoderModule.h"
 #endif
 
+#include "mozilla/ipc/UtilityProcessChild.h"
+#include "mozilla/RemoteDecodeUtils.h"
+
 namespace mozilla::ipc {
 
 UtilityAudioDecoderParent::UtilityAudioDecoderParent() {
@@ -33,14 +36,18 @@ UtilityAudioDecoderParent::UtilityAudioDecoderParent() {
 }
 
 /* static */
-void UtilityAudioDecoderParent::PreloadForSandbox() {
+void UtilityAudioDecoderParent::GenericPreloadForSandbox() {
 #if defined(MOZ_SANDBOX) && defined(OS_WIN)
   // Preload AV dlls so we can enable Binary Signature Policy
   // to restrict further dll loads.
   ::LoadLibraryW(L"mozavcodec.dll");
   ::LoadLibraryW(L"mozavutil.dll");
+#endif  // defined(MOZ_SANDBOX) && defined(OS_WIN)
+}
 
-  // WMF
+/* static */
+void UtilityAudioDecoderParent::WMFPreloadForSandbox() {
+#if defined(MOZ_SANDBOX) && defined(OS_WIN)
   ::LoadLibraryW(L"mfplat.dll");
   ::LoadLibraryW(L"mf.dll");
 
@@ -56,6 +63,15 @@ void UtilityAudioDecoderParent::PreloadForSandbox() {
 #endif  // defined(MOZ_SANDBOX) && defined(OS_WIN)
 }
 
+/* static */
+SandboxingKind UtilityAudioDecoderParent::GetSandboxingKind() {
+  RefPtr<UtilityProcessChild> me = UtilityProcessChild::GetSingleton();
+  if (!me) {
+    MOZ_CRASH("I cant find myself");
+  }
+  return me->mSandbox;
+}
+
 void UtilityAudioDecoderParent::Start(
     Endpoint<PUtilityAudioDecoderParent>&& aEndpoint) {
   MOZ_ASSERT(NS_IsMainThread());
@@ -71,7 +87,8 @@ void UtilityAudioDecoderParent::Start(
 #endif
 
   auto supported = PDMFactory::Supported();
-  Unused << SendUpdateMediaCodecsSupported(std::move(supported));
+  Unused << SendUpdateMediaCodecsSupported(
+      GetRemoteDecodeInFromKind(GetSandboxingKind()), supported);
 }
 
 mozilla::ipc::IPCResult
diff --git a/ipc/glue/UtilityAudioDecoderParent.h b/ipc/glue/UtilityAudioDecoderParent.h
index d0831a5a3653..d8cb996f4eb2 100644
--- a/ipc/glue/UtilityAudioDecoderParent.h
+++ b/ipc/glue/UtilityAudioDecoderParent.h
@@ -12,6 +12,8 @@
 #include "mozilla/ipc/Endpoint.h"
 #include "mozilla/ipc/PUtilityAudioDecoderParent.h"
 
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
+
 #include "nsThreadManager.h"
 
 namespace mozilla::ipc {
@@ -24,13 +26,16 @@ class UtilityAudioDecoderParent final : public PUtilityAudioDecoderParent {
 
   UtilityAudioDecoderParent();
 
-  static void PreloadForSandbox();
+  static void GenericPreloadForSandbox();
+  static void WMFPreloadForSandbox();
 
   void Start(Endpoint<PUtilityAudioDecoderParent>&& aEndpoint);
 
   mozilla::ipc::IPCResult RecvNewContentRemoteDecoderManager(
       Endpoint<PRemoteDecoderManagerParent>&& aEndpoint);
 
+  static SandboxingKind GetSandboxingKind();
+
  private:
   ~UtilityAudioDecoderParent() = default;
 };
diff --git a/ipc/glue/UtilityProcessHost.cpp b/ipc/glue/UtilityProcessHost.cpp
index 82938583be27..b99860c21174 100644
--- a/ipc/glue/UtilityProcessHost.cpp
+++ b/ipc/glue/UtilityProcessHost.cpp
@@ -197,7 +197,7 @@ void UtilityProcessHost::InitAfterConnect(bool aSucceeded) {
   UniquePtr<SandboxBroker::Policy> policy;
   switch (mSandbox) {
     case SandboxingKind::GENERIC_UTILITY:
-    case SandboxingKind::UTILITY_AUDIO_DECODING:  // TODO: NEW POLICY?
+    case SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
       policy = SandboxBrokerPolicyFactory::GetUtilityProcessPolicy(
           GetActor()->OtherPid());
       break;
diff --git a/ipc/glue/UtilityProcessImpl.cpp b/ipc/glue/UtilityProcessImpl.cpp
index f50c4ded6b42..a99821e75132 100644
--- a/ipc/glue/UtilityProcessImpl.cpp
+++ b/ipc/glue/UtilityProcessImpl.cpp
@@ -38,8 +38,12 @@ bool UtilityProcessImpl::Init(int aArgc, char* aArgv[]) {
   // lower the sandbox in processes where the policy will prevent loading.
   ::LoadLibraryW(L"winmm.dll");
 
-  if (*sandboxingKind == SandboxingKind::UTILITY_AUDIO_DECODING) {
-    UtilityAudioDecoderParent::PreloadForSandbox();
+  if (*sandboxingKind == SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC) {
+    UtilityAudioDecoderParent::GenericPreloadForSandbox();
+  }
+
+  if (*sandboxingKind == SandboxingKind::UTILITY_AUDIO_DECODING_WMF) {
+    UtilityAudioDecoderParent::WMFPreloadForSandbox();
   }
 
   // Go for it
diff --git a/ipc/glue/UtilityProcessManager.cpp b/ipc/glue/UtilityProcessManager.cpp
index 12de8ef5d519..ee1f7134ebc4 100644
--- a/ipc/glue/UtilityProcessManager.cpp
+++ b/ipc/glue/UtilityProcessManager.cpp
@@ -263,18 +263,18 @@ RefPtr<GenericNonExclusivePromise> UtilityProcessManager::StartUtility(
 }
 
 RefPtr<UtilityProcessManager::AudioDecodingPromise>
-UtilityProcessManager::StartAudioDecoding(base::ProcessId aOtherProcess) {
+UtilityProcessManager::StartAudioDecoding(base::ProcessId aOtherProcess,
+                                          SandboxingKind aSandbox) {
   RefPtr<UtilityProcessManager> self = this;
   RefPtr<UtilityAudioDecoderChild> uadc =
-      UtilityAudioDecoderChild::GetSingleton();
+      UtilityAudioDecoderChild::GetSingleton(aSandbox);
   MOZ_ASSERT(uadc, "Unable to get a singleton for UtilityAudioDecoderChild");
-  return StartUtility(uadc, SandboxingKind::UTILITY_AUDIO_DECODING)
+  return StartUtility(uadc, aSandbox)
       ->Then(
           GetMainThreadSerialEventTarget(), __func__,
-          [self, uadc, aOtherProcess]() {
+          [self, uadc, aOtherProcess, aSandbox]() {
             base::ProcessId process =
-                self->GetProcessParent(SandboxingKind::UTILITY_AUDIO_DECODING)
-                    ->OtherPid();
+                self->GetProcessParent(aSandbox)->OtherPid();
 
             if (!uadc->CanSend()) {
               MOZ_ASSERT(false, "UtilityAudioDecoderChild lost in the middle");
diff --git a/ipc/glue/UtilityProcessManager.h b/ipc/glue/UtilityProcessManager.h
index 6767dacb0439..bebb62954dd0 100644
--- a/ipc/glue/UtilityProcessManager.h
+++ b/ipc/glue/UtilityProcessManager.h
@@ -46,8 +46,8 @@ class UtilityProcessManager final : public UtilityProcessHost::Listener {
   RefPtr<GenericNonExclusivePromise> StartUtility(RefPtr<Actor> aActor,
                                                   SandboxingKind aSandbox);
 
-  RefPtr<AudioDecodingPromise> StartAudioDecoding(
-      base::ProcessId aOtherProcess);
+  RefPtr<AudioDecodingPromise> StartAudioDecoding(base::ProcessId aOtherProcess,
+                                                  SandboxingKind aSandbox);
 
   void OnProcessUnexpectedShutdown(UtilityProcessHost* aHost);
 
diff --git a/ipc/glue/UtilityProcessSandboxing.h b/ipc/glue/UtilityProcessSandboxing.h
index 6b5f02f37cc5..a83305c8187a 100644
--- a/ipc/glue/UtilityProcessSandboxing.h
+++ b/ipc/glue/UtilityProcessSandboxing.h
@@ -16,9 +16,15 @@ namespace ipc {
 // to be updated as well.
 enum SandboxingKind : uint64_t {
 
-  GENERIC_UTILITY,
+  GENERIC_UTILITY = 0,
 
-  UTILITY_AUDIO_DECODING,
+  UTILITY_AUDIO_DECODING_GENERIC = 1,
+#ifdef MOZ_APPLEMEDIA
+  UTILITY_AUDIO_DECODING_APPLE_MEDIA = 2,
+#endif
+#ifdef XP_WIN
+  UTILITY_AUDIO_DECODING_WMF = 3,
+#endif
 
   COUNT,
 
diff --git a/ipc/glue/test/browser/browser_utility_audioDecodeCrash.js b/ipc/glue/test/browser/browser_utility_audioDecodeCrash.js
index 9b8a5322662d..0e4889b3401a 100644
--- a/ipc/glue/test/browser/browser_utility_audioDecodeCrash.js
+++ b/ipc/glue/test/browser/browser_utility_audioDecodeCrash.js
@@ -3,22 +3,25 @@
 
 "use strict";
 
-async function getAudioDecoderPid() {
+async function getAudioDecoderPid(expectation) {
   info("Finding a running AudioDecoder");
+
+  const actor = expectation.replace("Utility ", "");
+
   let audioDecoderProcess = (await ChromeUtils.requestProcInfo()).children.find(
     p =>
       p.type === "utility" &&
-      p.utilityActors.find(a => a.actorName === "audioDecoder")
+      p.utilityActors.find(a => a.actorName === `audioDecoder_${actor}`)
   );
   ok(
     audioDecoderProcess,
-    `Found the AudioDecoder process at ${audioDecoderProcess.pid}`
+    `Found the AudioDecoder ${actor} process at ${audioDecoderProcess.pid}`
   );
   return audioDecoderProcess.pid;
 }
 
-async function crashDecoder() {
-  const audioPid = await getAudioDecoderPid();
+async function crashDecoder(expectation) {
+  const audioPid = await getAudioDecoderPid(expectation);
   ok(audioPid > 0, `Found an audio decoder ${audioPid}`);
 
   const ProcessTools = Cc["@mozilla.org/processtools-service;1"].getService(
@@ -27,15 +30,15 @@ async function crashDecoder() {
   ProcessTools.kill(audioPid);
 }
 
-async function runTest(src, withClose) {
+async function runTest(src, withClose, expectation) {
   info(`Add media tabs: ${src}`);
   let tab = await addMediaTab(src);
 
   info("Play tab");
-  await play(tab, true /* expectUtility */);
+  await play(tab, expectation);
 
   info("Crash decoder");
-  await crashDecoder();
+  await crashDecoder(expectation);
 
   if (withClose) {
     info("Stop tab");
@@ -49,7 +52,7 @@ async function runTest(src, withClose) {
   }
 
   info("Play tab again");
-  await play(tab, true);
+  await play(tab, expectation);
 
   info("Stop tab");
   await stop(tab);
@@ -69,13 +72,15 @@ async function testAudioCrash(withClose) {
 
   SimpleTest.expectChildProcessCrash();
 
-  for (let src of [
-    "small-shot.ogg",
-    "small-shot.mp3",
-    "small-shot.m4a",
-    "small-shot.flac",
-  ]) {
-    await runTest(src, withClose);
+  const platform = Services.appinfo.OS;
+
+  for (let { src, expectations } of audioTestData()) {
+    if (!(platform in expectations)) {
+      info(`Skipping ${src} for ${platform}`);
+      continue;
+    }
+
+    await runTest(src, withClose, expectations[platform]);
   }
 }
 
diff --git a/ipc/glue/test/browser/browser_utility_multipleAudio.js b/ipc/glue/test/browser/browser_utility_multipleAudio.js
index 81342e9d49b0..f109b7d8c421 100644
--- a/ipc/glue/test/browser/browser_utility_multipleAudio.js
+++ b/ipc/glue/test/browser/browser_utility_multipleAudio.js
@@ -16,19 +16,21 @@ async function runTest(expectUtility) {
     });
   }
 
-  for (let src of [
-    "small-shot.ogg",
-    "small-shot.mp3",
-    "small-shot.m4a",
-    "small-shot.flac",
-  ]) {
+  const platform = Services.appinfo.OS;
+
+  for (let { src, expectations } of audioTestData()) {
+    if (!(platform in expectations)) {
+      info(`Skipping ${src} for ${platform}`);
+      continue;
+    }
+
     info(`Add media tabs: ${src}`);
     let tabs = [await addMediaTab(src), await addMediaTab(src)];
     let playback = [];
 
     info("Play tabs");
     for (let tab of tabs) {
-      playback.push(play(tab, expectUtility));
+      playback.push(play(tab, expectUtility ? expectations[platform] : "RDD"));
     }
 
     info("Wait all playback");
diff --git a/ipc/glue/test/browser/head.js b/ipc/glue/test/browser/head.js
index 140da6d2bd6d..ad6cf27d3396 100644
--- a/ipc/glue/test/browser/head.js
+++ b/ipc/glue/test/browser/head.js
@@ -40,6 +40,49 @@ async function cleanUtilityProcessShutdown(utilityPid) {
   ok(!subject.hasKey("dumpID"), "There should be no dumpID");
 }
 
+function audioTestData() {
+  return [
+    {
+      src: "small-shot.ogg",
+      expectations: {
+        Android: "Utility Generic",
+        Linux: "Utility Generic",
+        WINNT: "Utility Generic",
+        Darwin: "Utility Generic",
+      },
+    },
+    {
+      src: "small-shot.mp3",
+      expectations: {
+        Android: "Utility Generic",
+        Linux: "Utility Generic",
+        WINNT: SpecialPowers.getBoolPref("media.ffvpx.mp3.enabled")
+          ? "Utility Generic"
+          : "Utility WMF",
+        Darwin: "Utility Generic",
+      },
+    },
+    {
+      src: "small-shot.m4a",
+      expectations: {
+        // Add Android after Bug 1771196
+        Linux: "Utility Generic",
+        WINNT: "Utility WMF",
+        Darwin: "Utility AppleMedia",
+      },
+    },
+    {
+      src: "small-shot.flac",
+      expectations: {
+        Android: "Utility Generic",
+        Linux: "Utility Generic",
+        WINNT: "Utility Generic",
+        Darwin: "Utility Generic",
+      },
+    },
+  ];
+}
+
 async function addMediaTab(src) {
   const tab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
     forceNewProcess: true,
@@ -50,11 +93,16 @@ async function addMediaTab(src) {
   return tab;
 }
 
-async function play(tab, expectUtility, expectContent = false) {
+async function play(
+  tab,
+  expectUtility,
+  expectContent = false,
+  expectJava = false
+) {
   let browser = tab.linkedBrowser;
   return SpecialPowers.spawn(
     browser,
-    [expectUtility, expectContent],
+    [expectUtility, expectContent, expectJava],
     checkAudioDecoder
   );
 }
@@ -77,25 +125,28 @@ async function createAudioElement(src) {
   doc.body.appendChild(audio);
 }
 
-async function checkAudioDecoder(expectUtility, expectContent = false) {
+async function checkAudioDecoder(
+  expectedProcess,
+  expectContent = false,
+  expectJava = false
+) {
   const doc = typeof content !== "undefined" ? content.document : document;
   let audio = doc.querySelector("audio");
   const checkPromise = new Promise((resolve, reject) => {
     const timeUpdateHandler = async ev => {
       const debugInfo = await SpecialPowers.wrap(audio).mozRequestDebugInfo();
       const audioDecoderName = debugInfo.decoder.reader.audioDecoderName;
-      const isUtility = audioDecoderName.indexOf("(Utility remote)") > 0;
-      const isRDD = audioDecoderName.indexOf("(RDD remote)") > 0;
+      const isExpected =
+        audioDecoderName.indexOf(`(${expectedProcess} remote)`) > 0;
       const isJavaRemote = audioDecoderName.indexOf("(remote)") > 0;
-      const isContent = !isUtility && !isRDD;
       const isOk =
-        (expectUtility === true && isUtility && !isJavaRemote) ||
-        (expectUtility === false && isRDD && !isJavaRemote) ||
-        (expectContent === true && isContent);
+        (isExpected && !isJavaRemote && !expectContent && !expectJava) || // Running in Utility/RDD
+        (expectJava && !isExpected && isJavaRemote) || // Running in Java remote
+        (expectContent && !isExpected && !isJavaRemote); // Running in Content
 
       ok(
         isOk,
-        `playback ${audio.src} was from expected decoder ${audioDecoderName}`
+        `playback ${audio.src} was from decoder '${audioDecoderName}', expected '${expectedProcess}'`
       );
 
       if (isOk) {
@@ -120,7 +171,7 @@ async function checkAudioDecoder(expectUtility, expectContent = false) {
 
 async function runMochitestUtilityAudio(
   src,
-  { expectUtility, expectContent = false } = {}
+  { expectUtility, expectContent = false, expectJava = false } = {}
 ) {
   info(`Add media: ${src}`);
   await createAudioElement(src);
@@ -128,7 +179,7 @@ async function runMochitestUtilityAudio(
   ok(audio, "Found an audio element created");
 
   info(`Play media: ${src}`);
-  await checkAudioDecoder(expectUtility, expectContent);
+  await checkAudioDecoder(expectUtility, expectContent, expectJava);
 
   info(`Pause media: ${src}`);
   await audio.pause();
diff --git a/ipc/glue/test/browser/test_utility_audio_off.html b/ipc/glue/test/browser/test_utility_audio_off.html
index 2bcef568eaa4..7a5ad125255e 100644
--- a/ipc/glue/test/browser/test_utility_audio_off.html
+++ b/ipc/glue/test/browser/test_utility_audio_off.html
@@ -12,14 +12,25 @@
 SimpleTest.waitForExplicitFinish();
 
 (async function() {
+  const platform = SpecialPowers.Services.appinfo.OS;
+  for (let {src, expectations} of audioTestData()) {
+    if (!(platform in expectations)) {
+      info(`Skipping ${src} for ${platform}`);
+      continue;
+    }
+
+    try {
+      await runMochitestUtilityAudio(src, { expectUtility: "", expectContent: true, expectJava: false });
+    } catch (ex) {
+      ok(false, "Failure");
+    }
+  }
+
   for (let src of [
-    "small-shot.ogg",
-    "small-shot.mp3",
     "small-shot.m4a",
-    "small-shot.flac",
   ]) {
     try {
-      await runMochitestUtilityAudio(src, { expectUtility: false, expectContent: true });
+      await runMochitestUtilityAudio(src, { expectUtility: "", expectContent: false, expectJava: true });
     } catch (ex) {
       ok(false, "Failure");
     }
diff --git a/ipc/glue/test/browser/test_utility_audio_on.html b/ipc/glue/test/browser/test_utility_audio_on.html
index bff9d1b13896..b97394955708 100644
--- a/ipc/glue/test/browser/test_utility_audio_on.html
+++ b/ipc/glue/test/browser/test_utility_audio_on.html
@@ -12,13 +12,15 @@
 SimpleTest.waitForExplicitFinish();
 
 (async function() {
-  for (let src of [
-    "small-shot.ogg",
-    "small-shot.mp3",
-    "small-shot.flac"
-  ]) {
+  const platform = SpecialPowers.Services.appinfo.OS;
+  for (let {src, expectations} of audioTestData()) {
+    if (!(platform in expectations)) {
+      info(`Skipping ${src} for ${platform}`);
+      continue;
+    }
+
     try {
-      await runMochitestUtilityAudio(src, { expectUtility: true, expectContent: false });
+      await runMochitestUtilityAudio(src, { expectUtility: expectations[platform], expectContent: false, expectJava: false });
     } catch (ex) {
       ok(false, "Failure");
     }
@@ -29,7 +31,7 @@ SimpleTest.waitForExplicitFinish();
     "small-shot.m4a",
   ]) {
     try {
-      await runMochitestUtilityAudio(src, { expectUtility: false, expectContent: true });
+      await runMochitestUtilityAudio(src, { expectUtility: "", expectContent: false, expectJava: true });
     } catch (ex) {
       ok(false, "Failure");
     }
diff --git a/security/sandbox/common/test/SandboxTestingChild.cpp b/security/sandbox/common/test/SandboxTestingChild.cpp
index 351fed0669ea..507a66c3411e 100644
--- a/security/sandbox/common/test/SandboxTestingChild.cpp
+++ b/security/sandbox/common/test/SandboxTestingChild.cpp
@@ -89,8 +89,14 @@ void SandboxTestingChild::Bind(Endpoint<PSandboxTestingChild>&& aEndpoint) {
         RunTestsGenericUtility(this);
         break;
 
-      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING:
-        RunTestsUtilityAudioDecoder(this);
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
+#ifdef MOZ_APPLEMEDIA
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA:
+#endif
+#ifdef XP_WIN
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF:
+#endif
+        RunTestsUtilityAudioDecoder(this, s->mSandbox);
         break;
 
       default:
diff --git a/security/sandbox/common/test/SandboxTestingChildTests.h b/security/sandbox/common/test/SandboxTestingChildTests.h
index 8138019a38bc..267eb0d6bc40 100644
--- a/security/sandbox/common/test/SandboxTestingChildTests.h
+++ b/security/sandbox/common/test/SandboxTestingChildTests.h
@@ -764,7 +764,8 @@ void RunTestsGenericUtility(SandboxTestingChild* child) {
 #endif             // XP_MACOSX
 }
 
-void RunTestsUtilityAudioDecoder(SandboxTestingChild* child) {
+void RunTestsUtilityAudioDecoder(SandboxTestingChild* child,
+                                 ipc::SandboxingKind aSandbox) {
   MOZ_ASSERT(child, "No SandboxTestingChild*?");
 
   RunGenericTests(child);
@@ -796,7 +797,9 @@ void RunTestsUtilityAudioDecoder(SandboxTestingChild* child) {
 #  elif XP_MACOSX  // XP_LINUX
   RunMacTestLaunchProcess(child);
   RunMacTestWindowServer(child);
-  RunMacTestAudioAPI(child, true);
+  RunMacTestAudioAPI(
+      child,
+      aSandbox == ipc::SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA);
 #  endif           // XP_MACOSX
 #else              // XP_UNIX
 #  ifdef XP_WIN
diff --git a/security/sandbox/linux/Sandbox.cpp b/security/sandbox/linux/Sandbox.cpp
index 6611de216227..3c07377ee15c 100644
--- a/security/sandbox/linux/Sandbox.cpp
+++ b/security/sandbox/linux/Sandbox.cpp
@@ -754,7 +754,7 @@ void SetUtilitySandbox(int aBroker, ipc::SandboxingKind aKind) {
       policy = GetUtilitySandboxPolicy(sBroker);
       break;
 
-    case ipc::SandboxingKind::UTILITY_AUDIO_DECODING:
+    case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
       policy = GetUtilityAudioDecoderSandboxPolicy(sBroker);
       break;
 
diff --git a/security/sandbox/mac/Sandbox.mm b/security/sandbox/mac/Sandbox.mm
index 83060385987f..7526a8077b01 100644
--- a/security/sandbox/mac/Sandbox.mm
+++ b/security/sandbox/mac/Sandbox.mm
@@ -288,11 +288,12 @@ bool StartMacSandbox(MacSandboxInfo const& aInfo, std::string& aErrorMessage) {
 
     switch (aInfo.utilityKind) {
       case ipc::SandboxingKind::GENERIC_UTILITY:
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
         // Nothing to do here specifically
         break;
 
-      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING: {
-        profile.append(SandboxPolicyUtilityAudioDecoderAddend);
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA: {
+        profile.append(SandboxPolicyUtilityAudioDecoderAppleMediaAddend);
         params.push_back("MAC_OS_VERSION");
         params.push_back(combinedVersion.c_str());
       } break;
diff --git a/security/sandbox/mac/SandboxPolicyUtility.h b/security/sandbox/mac/SandboxPolicyUtility.h
index bca0d300df64..ec10175fda37 100644
--- a/security/sandbox/mac/SandboxPolicyUtility.h
+++ b/security/sandbox/mac/SandboxPolicyUtility.h
@@ -68,8 +68,9 @@ static const char SandboxPolicyUtility[] = R"SANDBOX_LITERAL(
     (global-name "com.apple.coreservices.launchservicesd"))
 )SANDBOX_LITERAL";
 
-static const char SandboxPolicyUtilityAudioDecoderAddend[] = R"SANDBOX_LITERAL(
-  ; For Utility AudioDecoder
+static const char SandboxPolicyUtilityAudioDecoderAppleMediaAddend[] =
+    R"SANDBOX_LITERAL(
+  ; For Utility AudioDecoder AppleMedia codecs
   (define macosVersion (string->number (param "MAC_OS_VERSION")))
   (if (>= macosVersion 1013)
    (allow mach-lookup
diff --git a/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp b/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp
index 3e21cd5f6f18..13814db679c5 100644
--- a/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp
+++ b/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp
@@ -1273,7 +1273,7 @@ bool SandboxBroker::SetSecurityLevelForUtilityProcess(
       "SetJobLevel should never fail with these arguments, what happened?");
 
   auto lockdownLevel = sandbox::USER_LOCKDOWN;
-  if (aSandbox == mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING) {
+  if (aSandbox == mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF) {
     lockdownLevel = sandbox::USER_LIMITED;
   }
   result = mPolicy->SetTokenLevel(sandbox::USER_RESTRICTED_SAME_ACCESS,
@@ -1339,10 +1339,14 @@ bool SandboxBroker::SetSecurityLevelForUtilityProcess(
   // Investigate also why it crashes (no idea where exactly) for MinGW64 builds
   //
   // TODO: Bug 1773005 - AAC seems to not work on Windows < 1703
-  if (IsWin10CreatorsUpdateOrLater()) {
-#if defined(_M_X64) && !defined(__MINGW64__)
+  if (aSandbox != mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF) {
     mitigations |= sandbox::MITIGATION_DYNAMIC_CODE_DISABLE;
+  } else {
+    if (IsWin10CreatorsUpdateOrLater()) {
+#if defined(_M_X64) && !defined(__MINGW64__)
+      mitigations |= sandbox::MITIGATION_DYNAMIC_CODE_DISABLE;
 #endif  // defined(_M_X64) && !defined(__MINGW64__)
+    }
   }
 
   if (exceptionModules.isNothing()) {
@@ -1373,7 +1377,8 @@ bool SandboxBroker::SetSecurityLevelForUtilityProcess(
 
   switch (aSandbox) {
     case mozilla::ipc::SandboxingKind::GENERIC_UTILITY:
-    case mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING:
+    case mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING_GENERIC:
+    case mozilla::ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF:
       // Nothing specific to perform yet?
       break;
 
diff --git a/toolkit/components/aboutprocesses/content/aboutProcesses.js b/toolkit/components/aboutprocesses/content/aboutProcesses.js
index fcae4ffc44ec..44fc8e8c2b54 100644
--- a/toolkit/components/aboutprocesses/content/aboutProcesses.js
+++ b/toolkit/components/aboutprocesses/content/aboutProcesses.js
@@ -864,8 +864,16 @@ var View = {
     let fluentName;
     let fluentArgs = {};
     switch (data.actorName) {
-      case "audioDecoder":
-        fluentName = "about-processes-utility-actor-audio-decoder";
+      case "audioDecoder_Generic":
+        fluentName = "about-processes-utility-actor-audio-decoder-generic";
+        break;
+
+      case "audioDecoder_AppleMedia":
+        fluentName = "about-processes-utility-actor-audio-decoder-applemedia";
+        break;
+
+      case "audioDecoder_WMF":
+        fluentName = "about-processes-utility-actor-audio-decoder-wmf";
         break;
 
       default:
diff --git a/toolkit/components/aboutprocesses/tests/browser/head.js b/toolkit/components/aboutprocesses/tests/browser/head.js
index 896edc166821..50b70d21da81 100644
--- a/toolkit/components/aboutprocesses/tests/browser/head.js
+++ b/toolkit/components/aboutprocesses/tests/browser/head.js
@@ -609,7 +609,7 @@ async function testAboutProcessesWithConfig({ showAllFrames, showThreads }) {
         row.classList.contains("process") &&
         row.nextSibling &&
         row.nextSibling.classList.contains("actor") &&
-        row.nextSibling.actor.actorName === "audioDecoder",
+        row.nextSibling.actor.actorName === "audioDecoder_Generic",
     },
   ];
   for (let finder of processesToBeFound) {
diff --git a/toolkit/components/processtools/ProcInfo.h b/toolkit/components/processtools/ProcInfo.h
index 9f29f444354b..c427f20eeddb 100644
--- a/toolkit/components/processtools/ProcInfo.h
+++ b/toolkit/components/processtools/ProcInfo.h
@@ -70,7 +70,9 @@ enum class ProcType {
 
 enum class UtilityActorName {
   Unknown,
-  AudioDecoder,
+  AudioDecoder_Generic,
+  AudioDecoder_AppleMedia,
+  AudioDecoder_WMF
 };
 
 /* Get the CPU frequency to use to convert cycle time values to actual time.
diff --git a/toolkit/locales/en-US/toolkit/about/aboutProcesses.ftl b/toolkit/locales/en-US/toolkit/about/aboutProcesses.ftl
index c9ffad6f473e..1df5b97e2ff5 100644
--- a/toolkit/locales/en-US/toolkit/about/aboutProcesses.ftl
+++ b/toolkit/locales/en-US/toolkit/about/aboutProcesses.ftl
@@ -122,9 +122,12 @@ about-processes-frame-name-one = Subframe: { $url }
 #   $shortUrl (String) The shared prefix for the subframes in the group.
 about-processes-frame-name-many = Subframes ({ $number }): { $shortUrl }
 
-# Utility process actor names
+## Utility process actor names
+
 about-processes-utility-actor-unknown = Unknown actor
-about-processes-utility-actor-audio-decoder = Audio Decoder
+about-processes-utility-actor-audio-decoder-generic = Generic Audio Decoder
+about-processes-utility-actor-audio-decoder-applemedia = Apple Media Audio Decoder
+about-processes-utility-actor-audio-decoder-wmf = Windows Media Framework Audio Decoder
 
 ## Displaying CPU (percentage and total)
 ## Variables: