diff --git a/media/libnestegg/README_MOZILLA b/media/libnestegg/README_MOZILLA
index ab85fb0c84e8..b48a8341801d 100644
--- a/media/libnestegg/README_MOZILLA
+++ b/media/libnestegg/README_MOZILLA
@@ -3,6 +3,6 @@ git repository using the update.sh script.  The only changes
 made were those applied by update.sh and the addition of
 Makefile.in build files for the Mozilla build system.
 
-The nestegg git repository is: git://github.com/kinetiknz/nestegg.git
+The nestegg git repository is: https://github.com/kinetiknz/nestegg
 
-The git commit ID used was 5e2fb721d5808785475d68f63fc97d45b8a4ef03.
+The git commit ID used was af26fc354ec9eadf5fcd34fb01223be3f6f8a773.
diff --git a/media/libnestegg/include/nestegg.h b/media/libnestegg/include/nestegg.h
index 45e84a0795a7..32fc7d602491 100644
--- a/media/libnestegg/include/nestegg.h
+++ b/media/libnestegg/include/nestegg.h
@@ -27,7 +27,7 @@ extern "C" {
 
     @code
     nestegg * demux_ctx;
-    nestegg_init(&demux_ctx, io, NULL);
+    nestegg_init(&demux_ctx, io, NULL, -1);
 
     nestegg_packet * pkt;
     while ((r = nestegg_read_packet(demux_ctx, &pkt)) > 0) {
@@ -71,6 +71,7 @@ extern "C" {
 #define NESTEGG_CODEC_VORBIS  1       /**< Track uses Xiph Vorbis codec. */
 #define NESTEGG_CODEC_VP9     2       /**< Track uses Google On2 VP9 codec. */
 #define NESTEGG_CODEC_OPUS    3       /**< Track uses Xiph Opus codec. */
+#define NESTEGG_CODEC_AV1     4       /**< Track uses AOMedia AV1 codec. */
 #define NESTEGG_CODEC_UNKNOWN INT_MAX /**< Track uses unknown codec. */
 
 #define NESTEGG_VIDEO_MONO              0 /**< Track is mono video. */
diff --git a/media/libnestegg/src/nestegg.c b/media/libnestegg/src/nestegg.c
index c31cd425c5ec..d9be77aaca1b 100644
--- a/media/libnestegg/src/nestegg.c
+++ b/media/libnestegg/src/nestegg.c
@@ -154,6 +154,7 @@ enum ebml_type_enum {
 /* Track IDs */
 #define TRACK_ID_VP8                "V_VP8"
 #define TRACK_ID_VP9                "V_VP9"
+#define TRACK_ID_AV1                "V_AV1"
 #define TRACK_ID_VORBIS             "A_VORBIS"
 #define TRACK_ID_OPUS               "A_OPUS"
 
@@ -1046,7 +1047,7 @@ static int
 ne_read_simple(nestegg * ctx, struct ebml_element_desc * desc, size_t length)
 {
   struct ebml_type * storage;
-  int r;
+  int r = -1;
 
   storage = (struct ebml_type *) (ctx->ancestor->data + desc->offset);
 
@@ -2370,6 +2371,9 @@ nestegg_track_codec_id(nestegg * ctx, unsigned int track)
   if (strcmp(codec_id, TRACK_ID_VP9) == 0)
     return NESTEGG_CODEC_VP9;
 
+  if (strcmp(codec_id, TRACK_ID_AV1) == 0)
+    return NESTEGG_CODEC_AV1;
+
   if (strcmp(codec_id, TRACK_ID_VORBIS) == 0)
     return NESTEGG_CODEC_VORBIS;