From 2668cb6e31f4ef3cd59ffe2cf143c9c535141c6e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Mon, 19 Oct 2026 21:21:04 +0200
Subject: [PATCH] avformat/asfdec_f: export stream-specific metadata in the
 stream

Store such entries in the metadata of the corresponding stream.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/asfdec_f.c             | 15 ++++++++++++++-
 libavformat/rtpdec_asf.c           |  4 ++++
 tests/fate/microsoft.mak           |  6 +++++-
 tests/ref/fate/asf-stream-metadata | 19 +++++++++++++++++++
 4 files changed, 42 insertions(+), 2 deletions(-)
 create mode 100644 tests/ref/fate/asf-stream-metadata

diff --git a/libavformat/asfdec_f.c b/libavformat/asfdec_f.c
index 158c70d295..4c9925bc39 100644
--- a/libavformat/asfdec_f.c
+++ b/libavformat/asfdec_f.c
@@ -70,6 +70,8 @@ typedef struct ASFStream {
 
     int payload_ext_ct;
     ASFPayload payload[8];
+
+    AVDictionary *metadata;
 } ASFStream;
 
 typedef struct ASFContext {
@@ -645,7 +647,9 @@ static int asf_read_metadata(AVFormatContext *s)
             if(stream_num < 128)
                 asf->dar[stream_num].den = aspect_y;
         } else {
-            get_tag(s, &s->metadata, name, value_type, value_len);
+            get_tag(s, stream_num > 0 && stream_num < 128 ? &asf->streams[stream_num].metadata
+                                                          : &s->metadata,
+                    name, value_type, value_len);
         }
         av_freep(&name);
     }
@@ -818,6 +822,10 @@ static int asf_read_header(AVFormatContext *s)
         int stream_num = asf->asfid2avid[i];
         if (stream_num >= 0) {
             AVStream *st = s->streams[stream_num];
+            int ret = av_dict_copy(&st->metadata, asf->streams[i].metadata, 0);
+            if (ret < 0)
+                return ret;
+            ff_metadata_conv(&st->metadata, NULL, ff_asf_metadata_conv);
             if (!st->codecpar->bit_rate)
                 st->codecpar->bit_rate = asf->stream_bitrates[i];
             if (asf->dar[i].num > 0 && asf->dar[i].den > 0) {
@@ -1431,7 +1439,11 @@ static void skip_to_key(AVFormatContext *s)
 
 static int asf_read_close(AVFormatContext *s)
 {
+    ASFContext *asf = s->priv_data;
+
     asf_reset_header(s);
+    for (int i = 0; i < 128; i++)
+        av_dict_free(&asf->streams[i].metadata);
 
     return 0;
 }
@@ -1618,6 +1630,7 @@ const FFInputFormat ff_asf_demuxer = {
     .p.flags        = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,
     .p.priv_class   = &asf_class,
     .priv_data_size = sizeof(ASFContext),
+    .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
     .read_probe     = asf_probe,
     .read_header    = asf_read_header,
     .read_packet    = asf_read_packet,
diff --git a/libavformat/rtpdec_asf.c b/libavformat/rtpdec_asf.c
index 7489c174bc..eb7bd93cdf 100644
--- a/libavformat/rtpdec_asf.c
+++ b/libavformat/rtpdec_asf.c
@@ -169,6 +169,10 @@ static int asfrtp_parse_sdp_line(AVFormatContext *s, int stream_index,
 
             for (i = 0; i < rt->asf_ctx->nb_streams; i++) {
                 if (s->streams[stream_index]->id == rt->asf_ctx->streams[i]->id) {
+                    int ret = av_dict_copy(&s->streams[stream_index]->metadata,
+                                           rt->asf_ctx->streams[i]->metadata, 0);
+                    if (ret < 0)
+                        return ret;
                     avcodec_parameters_copy(s->streams[stream_index]->codecpar,
                                             rt->asf_ctx->streams[i]->codecpar);
                     ffstream(s->streams[stream_index])->need_parsing =
diff --git a/tests/fate/microsoft.mak b/tests/fate/microsoft.mak
index 8d8e92575a..006ad34840 100644
--- a/tests/fate/microsoft.mak
+++ b/tests/fate/microsoft.mak
@@ -83,7 +83,11 @@ fate-vc1: $(FATE_VC1-yes)
 FATE_MICROSOFT-$(call ALLYES, PIPE_PROTOCOL ASF_DEMUXER FRAMECRC_MUXER) += fate-asf-repldata
 fate-asf-repldata: CMD = framecrc -i $(TARGET_SAMPLES)/asf/bug821-2.asf -c copy
 
+FATE_MICROSOFT_FFPROBE-$(CONFIG_ASF_DEMUXER) += fate-asf-stream-metadata
+fate-asf-stream-metadata: CMD = probe -show_entries format_tags:stream_tags $(TARGET_SAMPLES)/wmv8/wmv8_x8intra.wmv
+
 FATE_MICROSOFT += $(FATE_MICROSOFT-yes)
 
 FATE_SAMPLES_FFMPEG += $(FATE_MICROSOFT)
-fate-microsoft: $(FATE_MICROSOFT)
+FATE_SAMPLES_FFPROBE += $(FATE_MICROSOFT_FFPROBE-yes)
+fate-microsoft: $(FATE_MICROSOFT) $(FATE_MICROSOFT_FFPROBE-yes)
diff --git a/tests/ref/fate/asf-stream-metadata b/tests/ref/fate/asf-stream-metadata
new file mode 100644
index 0000000000..495a30ad64
--- /dev/null
+++ b/tests/ref/fate/asf-stream-metadata
@@ -0,0 +1,19 @@
+[STREAM]
+TAG:IsVBR=0
+TAG:DeviceConformanceTemplate=L2
+TAG:WM/WMADRCPeakReference=8322
+TAG:WM/WMADRCAverageReference=1228
+TAG:NumberOfFrames=110
+TAG:language=eng
+[/STREAM]
+[STREAM]
+TAG:IsVBR=0
+TAG:DeviceConformanceTemplate=@
+TAG:language=eng
+[/STREAM]
+[FORMAT]
+TAG:creation_time=2003-12-12T01:31:27.640000Z
+TAG:WMFSDKVersion=9.00.00.2980
+TAG:WMFSDKNeeded=0.0.0.0000
+TAG:IsVBR=0
+[/FORMAT]