---
 libavformat/oggdec.c                       | 26 ++++++++++----------
 libavformat/oggdec.h                       |  6 +++++
 libavformat/oggparseflac.c                 | 28 ++++++++++++++++++++--
 libavformat/oggparseopus.c                 | 12 ++++++++++
 libavformat/oggparsevorbis.c               |  4 +++-
 tests/ref/fate/ogg-flac-chained-meta.txt   |  2 --
 tests/ref/fate/ogg-opus-chained-meta.txt   |  1 -
 tests/ref/fate/ogg-vorbis-chained-meta.txt |  3 ---
 8 files changed, 61 insertions(+), 21 deletions(-)

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 5339fdd32c..5557eb4a14 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -239,10 +239,6 @@ static int ogg_replace_stream(AVFormatContext *s, uint32_t 
serial, char *magic,
     os->start_trimming = 0;
     os->end_trimming = 0;
 
-    /* Chained files have extradata as a new packet */
-    if (codec == &ff_opus_codec)
-        os->header = -1;
-
     return i;
 }
 
@@ -605,20 +601,26 @@ static int ogg_packet(AVFormatContext *s, int *sid, int 
*dstart, int *dsize,
     } else {
         os->pflags    = 0;
         os->pduration = 0;
+
+        ret = 0;
         if (os->codec && os->codec->packet) {
             if ((ret = os->codec->packet(s, idx)) < 0) {
                 av_log(s, AV_LOG_ERROR, "Packet processing failed: %s\n", 
av_err2str(ret));
                 return ret;
             }
         }
-        if (sid)
-            *sid = idx;
-        if (dstart)
-            *dstart = os->pstart;
-        if (dsize)
-            *dsize = os->psize;
-        if (fpos)
-            *fpos = os->sync_pos;
+
+        if (!ret) {
+            if (sid)
+                *sid = idx;
+            if (dstart)
+                *dstart = os->pstart;
+            if (dsize)
+                *dsize = os->psize;
+            if (fpos)
+                *fpos = os->sync_pos;
+        }
+
         os->pstart  += os->psize;
         os->psize    = 0;
         if(os->pstart == os->bufpos)
diff --git a/libavformat/oggdec.h b/libavformat/oggdec.h
index 43df23f4cb..09f698f99a 100644
--- a/libavformat/oggdec.h
+++ b/libavformat/oggdec.h
@@ -38,6 +38,12 @@ struct ogg_codec {
      *         -1 if an error occurred or for unsupported stream
      */
     int (*header)(AVFormatContext *, int);
+    /**
+     * Attempt to process a packet as a data packet
+     * @return 1 if the packet was a header from a chained bitstream.
+     *         0 if the packet was a regular data packet.
+     *         -1 if an error occurred or for unsupported stream
+     */
     int (*packet)(AVFormatContext *, int);
     /**
      * Translate a granule into a timestamp.
diff --git a/libavformat/oggparseflac.c b/libavformat/oggparseflac.c
index f25ed9cc15..d66b85b09e 100644
--- a/libavformat/oggparseflac.c
+++ b/libavformat/oggparseflac.c
@@ -27,6 +27,8 @@
 #include "oggdec.h"
 
 #define OGG_FLAC_METADATA_TYPE_STREAMINFO 0x7F
+#define OGG_FLAC_MAGIC "\177FLAC"
+#define OGG_FLAC_MAGIC_SIZE sizeof(OGG_FLAC_MAGIC)-1
 
 static int
 flac_header (AVFormatContext * s, int idx)
@@ -78,6 +80,27 @@ flac_header (AVFormatContext * s, int idx)
     return 1;
 }
 
+static int
+flac_packet (AVFormatContext * s, int idx)
+{
+    struct ogg *ogg = s->priv_data;
+    struct ogg_stream *os = ogg->streams + idx;
+
+    if (os->psize > OGG_FLAC_MAGIC_SIZE &&
+        !memcmp(
+            os->buf + os->pstart,
+            OGG_FLAC_MAGIC,
+            OGG_FLAC_MAGIC_SIZE))
+        return 1;
+
+    if (os->psize > 0 &&
+        ((os->buf[os->pstart] & 0x7F) == FLAC_METADATA_TYPE_VORBIS_COMMENT)) {
+        return 1;
+    }
+
+    return 0;
+}
+
 static int
 old_flac_header (AVFormatContext * s, int idx)
 {
@@ -127,10 +150,11 @@ fail:
 }
 
 const struct ogg_codec ff_flac_codec = {
-    .magic = "\177FLAC",
-    .magicsize = 5,
+    .magic = OGG_FLAC_MAGIC,
+    .magicsize = OGG_FLAC_MAGIC_SIZE,
     .header = flac_header,
     .nb_header = 2,
+    .packet = flac_packet,
 };
 
 const struct ogg_codec ff_old_flac_codec = {
diff --git a/libavformat/oggparseopus.c b/libavformat/oggparseopus.c
index 218e9df581..07ddba8c82 100644
--- a/libavformat/oggparseopus.c
+++ b/libavformat/oggparseopus.c
@@ -81,6 +81,7 @@ static int opus_header(AVFormatContext *avf, int idx)
     if (priv->need_comments) {
         if (os->psize < 8 || memcmp(packet, "OpusTags", 8))
             return AVERROR_INVALIDDATA;
+
         ff_vorbis_stream_comment(avf, st, packet + 8, os->psize - 8);
         priv->need_comments--;
         return 1;
@@ -125,6 +126,17 @@ static int opus_packet(AVFormatContext *avf, int idx)
         return AVERROR_INVALIDDATA;
     }
 
+     if (os->psize > 8 && !memcmp(packet, "OpusHead", 8)) {
+        if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0)
+            return ret;
+
+        memcpy(st->codecpar->extradata, packet, os->psize);
+        return 1;
+    }
+
+    if (os->psize > 8 && !memcmp(packet, "OpusTags", 8))
+        return 1;
+
     if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & 
OGG_FLAG_EOS)) {
         int seg, d;
         int duration;
diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index 9f50ab9ffc..b5ed41bca0 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -418,6 +418,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
     struct ogg_stream *os = ogg->streams + idx;
     struct oggvorbis_private *priv = os->private;
     int duration, flags = 0;
+    int skip_packet = 0;
 
     if (!priv->vp)
         return AVERROR_INVALIDDATA;
@@ -430,6 +431,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
         int seg, d;
         uint8_t *last_pkt  = os->buf + os->pstart;
         uint8_t *next_pkt  = last_pkt;
+        skip_packet = 1;
 
         av_vorbis_parse_reset(priv->vp);
         duration = 0;
@@ -505,7 +507,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
         priv->final_duration += os->pduration;
     }
 
-    return 0;
+    return skip_packet;
 }
 
 const struct ogg_codec ff_vorbis_codec = {
diff --git a/tests/ref/fate/ogg-flac-chained-meta.txt 
b/tests/ref/fate/ogg-flac-chained-meta.txt
index ad20ba935f..28e22aa29e 100644
--- a/tests/ref/fate/ogg-flac-chained-meta.txt
+++ b/tests/ref/fate/ogg-flac-chained-meta.txt
@@ -5,8 +5,6 @@ Stream ID: 0, frame PTS: 0, metadata: N/A
 Stream ID: 0, packet PTS: 4608, packet DTS: 4608
 Stream ID: 0, frame PTS: 4608, metadata: N/A
 Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
 Stream ID: 0, frame PTS: 0, metadata: N/A
 Stream ID: 0, packet PTS: 4608, packet DTS: 4608
 Stream ID: 0, frame PTS: 4608, metadata: N/A
diff --git a/tests/ref/fate/ogg-opus-chained-meta.txt 
b/tests/ref/fate/ogg-opus-chained-meta.txt
index fc84b8b703..addc41c1eb 100644
--- a/tests/ref/fate/ogg-opus-chained-meta.txt
+++ b/tests/ref/fate/ogg-opus-chained-meta.txt
@@ -13,7 +13,6 @@ Stream ID: 0, frame PTS: 3528, metadata: N/A
 Stream ID: 0, packet PTS: 4488, packet DTS: 4488
 Stream ID: 0, frame PTS: 4488, metadata: N/A
 Stream ID: 0, packet PTS: -312, packet DTS: -312
-Stream ID: 0, new metadata: encoder=Lavc61.19.100 libopus;Lavc61.19.100 
libopus:title=First Stream;Second Stream
 Stream ID: 0, frame PTS: -312, metadata: N/A
 Stream ID: 0, packet PTS: 648, packet DTS: 648
 Stream ID: 0, frame PTS: 648, metadata: N/A
diff --git a/tests/ref/fate/ogg-vorbis-chained-meta.txt 
b/tests/ref/fate/ogg-vorbis-chained-meta.txt
index b7a97c90e2..1206f86c1f 100644
--- a/tests/ref/fate/ogg-vorbis-chained-meta.txt
+++ b/tests/ref/fate/ogg-vorbis-chained-meta.txt
@@ -6,10 +6,7 @@ Stream ID: 0, frame PTS: 128, metadata: N/A
 Stream ID: 0, packet PTS: 704, packet DTS: 704
 Stream ID: 0, frame PTS: 704, metadata: N/A
 Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
 Stream ID: 0, new metadata: encoder=Lavc61.19.100 libvorbis:title=Second Stream
-Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
 Stream ID: 0, frame PTS: 0, metadata: N/A
 Stream ID: 0, packet PTS: 128, packet DTS: 128
 Stream ID: 0, frame PTS: 128, metadata: N/A
-- 
2.39.5 (Apple Git-154)

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