6 files changed, 37 insertions, 4 deletions
diff --git a/dom/media/fmp4/MP4Decoder.cpp b/dom/media/fmp4/MP4Decoder.cpp
index 6954e9757..b293c251b 100644
--- a/dom/media/fmp4/MP4Decoder.cpp
+++ b/dom/media/fmp4/MP4Decoder.cpp
@@ -172,7 +172,8 @@ bool
 MP4Decoder::IsH264(const nsACString& aMimeType)
 {
   return aMimeType.EqualsLiteral("video/mp4") ||
-         aMimeType.EqualsLiteral("video/avc");
+         aMimeType.EqualsLiteral("video/avc") ||
+	 aMimeType.EqualsLiteral("video/webm; codecs=avc1");
 }
 
 /* static */
diff --git a/dom/media/mediasource/ContainerParser.cpp b/dom/media/mediasource/ContainerParser.cpp
index 4ae37d7e9..46f2e9557 100644
--- a/dom/media/mediasource/ContainerParser.cpp
+++ b/dom/media/mediasource/ContainerParser.cpp
@@ -697,6 +697,9 @@ ContainerParser::CreateForMIMEType(const nsACString& aType)
   if (aType.LowerCaseEqualsLiteral("video/webm") || aType.LowerCaseEqualsLiteral("audio/webm")) {
     return new WebMContainerParser(aType);
   }
+  if (aType.LowerCaseEqualsLiteral("video/x-matroska")) {
+    return new WebMContainerParser(aType);
+  }
 
 #ifdef MOZ_FMP4
   if (aType.LowerCaseEqualsLiteral("video/mp4") || aType.LowerCaseEqualsLiteral("audio/mp4")) {
diff --git a/dom/media/mediasource/MediaSource.cpp b/dom/media/mediasource/MediaSource.cpp
index 152c0085a..a262ff52c 100644
--- a/dom/media/mediasource/MediaSource.cpp
+++ b/dom/media/mediasource/MediaSource.cpp
@@ -110,7 +110,8 @@ MediaSource::IsTypeSupported(const nsAString& aType, DecoderDoctorDiagnostics* a
     }
     return NS_OK;
   }
-  if (mimeType.EqualsASCII("video/webm")) {
+  if (mimeType.EqualsASCII("video/webm") ||
+      mimeType.EqualsASCII("video/x-matroska")) {
     if (!(Preferences::GetBool("media.mediasource.webm.enabled", false) ||
           IsWebMForced(aDiagnostics))) {
       return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
diff --git a/dom/media/mediasource/TrackBuffersManager.cpp b/dom/media/mediasource/TrackBuffersManager.cpp
index ac6d82411..3a6f2a5c8 100644
--- a/dom/media/mediasource/TrackBuffersManager.cpp
+++ b/dom/media/mediasource/TrackBuffersManager.cpp
@@ -814,6 +814,7 @@ TrackBuffersManager::CreateDemuxerforMIMEType()
   ShutdownDemuxers();
 
   if (mType.LowerCaseEqualsLiteral("video/webm") ||
+      mType.LowerCaseEqualsLiteral("video/x-matroska") ||
       mType.LowerCaseEqualsLiteral("audio/webm")) {
     mInputDemuxer = new WebMDemuxer(mCurrentInputBuffer, true /* IsMediaSource*/ );
     return;
diff --git a/dom/media/webm/WebMDecoder.cpp b/dom/media/webm/WebMDecoder.cpp
index 9575d6e42..37e1e4a33 100644
--- a/dom/media/webm/WebMDecoder.cpp
+++ b/dom/media/webm/WebMDecoder.cpp
@@ -41,7 +41,7 @@ WebMDecoder::CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
   }
 
   const bool isWebMAudio = aMIMETypeExcludingCodecs.EqualsASCII("audio/webm");
-  const bool isWebMVideo = aMIMETypeExcludingCodecs.EqualsASCII("video/webm");
+  const bool isWebMVideo = aMIMETypeExcludingCodecs.EqualsASCII("video/webm") || aMIMETypeExcludingCodecs.EqualsASCII("video/x-matroska") ;
   if (!isWebMAudio && !isWebMVideo) {
     return false;
   }
@@ -74,6 +74,11 @@ WebMDecoder::CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
       continue;
     }
 #endif
+
+    if (IsH264CodecString(codec)) {
+      continue;
+    }
+
     // Some unsupported codec.
     return false;
   }
diff --git a/dom/media/webm/WebMDemuxer.cpp b/dom/media/webm/WebMDemuxer.cpp
index 013da9b2c..2b6d46186 100644
--- a/dom/media/webm/WebMDemuxer.cpp
+++ b/dom/media/webm/WebMDemuxer.cpp
@@ -326,6 +326,20 @@ WebMDemuxer::ReadMetadata()
         case NESTEGG_CODEC_AV1:
           mInfo.mVideo.mMimeType = "video/webm; codecs=av1";
           break;
+        case NESTEGG_CODEC_AVC1: {
+          mInfo.mVideo.mMimeType = "video/webm; codecs=avc1";
+
+          unsigned char* data = 0;
+          size_t length = 0;
+          r = nestegg_track_codec_data(context, track, 0, &data, &length);
+          if (r == -1) {
+            return NS_ERROR_FAILURE;
+          }
+
+          mInfo.mVideo.mExtraData = new MediaByteBuffer(length);
+          mInfo.mVideo.mExtraData->AppendElements(data, length);
+          break;
+	}
         default:
           NS_WARNING("Unknown WebM video codec");
           return NS_ERROR_FAILURE;
@@ -662,6 +676,9 @@ WebMDemuxer::GetNextPacket(TrackInfo::TrackType aType, MediaRawDataQueue *aSampl
           isKeyframe = AOMDecoder::IsKeyframe(sample);
           break;
 #endif
+        case NESTEGG_CODEC_AVC1:
+         isKeyframe = nestegg_packet_has_keyframe(holder->Packet());
+           break;
         default:
           NS_WARNING("Cannot detect keyframes in unknown WebM video codec");
           return NS_ERROR_FAILURE;
@@ -682,7 +699,7 @@ WebMDemuxer::GetNextPacket(TrackInfo::TrackType aType, MediaRawDataQueue *aSampl
             dimensions = AOMDecoder::GetFrameSize(sample);
             break;
 #endif
-          }
+         }
           if (mLastSeenFrameSize.isSome()
               && (dimensions != mLastSeenFrameSize.value())) {
             mInfo.mVideo.mDisplay = dimensions;
@@ -749,6 +766,11 @@ WebMDemuxer::GetNextPacket(TrackInfo::TrackType aType, MediaRawDataQueue *aSampl
     if (aType == TrackInfo::kVideoTrack) {
       sample->mTrackInfo = mSharedVideoTrackInfo;
     }
+
+    if (mVideoCodec == NESTEGG_CODEC_AVC1) {
+      sample->mExtraData = mInfo.mVideo.mExtraData;
+    }
+
     aSamples->Push(sample);
   }
   return NS_OK;