diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index 65c7a4958bd95..c1ea63c18ee87 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -136,6 +136,10 @@ AVCodecID AudioCodecToCodecID(AudioCodec audio_codec,
   switch (audio_codec) {
     case AudioCodec::kAAC:
       return AV_CODEC_ID_AAC;
+    case AudioCodec::kAC3:
+      return AV_CODEC_ID_AC3;
+    case AudioCodec::kEAC3:
+      return AV_CODEC_ID_EAC3;
     case AudioCodec::kALAC:
       return AV_CODEC_ID_ALAC;
     case AudioCodec::kMP3: