1 files changed, 7 insertions, 0 deletions
diff --git a/dom/media/platforms/wmf/WMFEncoderModule.cpp b/dom/media/platforms/wmf/WMFEncoderModule.cpp
index f9f35db653..7b5af9bf50 100644
--- a/dom/media/platforms/wmf/WMFEncoderModule.cpp
+++ b/dom/media/platforms/wmf/WMFEncoderModule.cpp
@@ -12,6 +12,10 @@ namespace mozilla {
 extern LazyLogModule sPEMLog;
 
 bool WMFEncoderModule::SupportsCodec(CodecType aCodecType) const {
+  if (aCodecType > CodecType::_BeginAudio_ &&
+      aCodecType < CodecType::_EndAudio_) {
+    return false;
+  }
   return CanCreateWMFEncoder(aCodecType);
 }
 
@@ -19,6 +23,9 @@ bool WMFEncoderModule::Supports(const EncoderConfig& aConfig) const {
   if (!CanLikelyEncode(aConfig)) {
     return false;
   }
+  if (aConfig.IsAudio()) {
+    return false;
+  }
   return SupportsCodec(aConfig.mCodec);
 }