From 6750a1eb8aa4c0ede055af672828baf7a88610bf Mon Sep 17 00:00:00 2001
From: Alessandro Ros <aler9.dev@gmail.com>
Date: Sun, 21 Sep 2025 18:08:27 +0200
Subject: [PATCH] sdp: fix compatibility with a Uniview camera
 (bluenviron/mediamtx#5008) (#903)

---
 pkg/sdp/sdp.go      |  2 +
 pkg/sdp/sdp_test.go | 99 ++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 99 insertions(+), 2 deletions(-)

diff --git a/pkg/sdp/sdp.go b/pkg/sdp/sdp.go
index 10fb770a..c41226ed 100644
--- a/pkg/sdp/sdp.go
+++ b/pkg/sdp/sdp.go
@@ -91,6 +91,8 @@ func (s *SessionDescription) unmarshalOrigin(value string) error {
 
 	if strings.HasSuffix(value, " IN") {
 		value += " IP4"
+	} else if strings.HasSuffix(value, " IN ") {
+		value += "IP4"
 	}
 
 	if strings.HasSuffix(value, "IN IP4") {
diff --git a/pkg/sdp/sdp_test.go b/pkg/sdp/sdp_test.go
index 8bef313a..6869932b 100644
--- a/pkg/sdp/sdp_test.go
+++ b/pkg/sdp/sdp_test.go
@@ -3093,8 +3093,7 @@ var cases = []struct {
 			},
 		},
 	},
-
-	{
+	{ //nolint:dupl
 		"issue gortsplib/618 (Uniview IPC2125LE-ADF28KM-H)",
 		[]byte("v=0\r\n" +
 			"o=- 1001 1 IN\r\n" +
@@ -3241,6 +3240,102 @@ var cases = []struct {
 			},
 		},
 	},
+	{ //nolint:dupl
+		"issue mediamtx/5008 (Uniview IPC2122LB-SF28K-A)",
+		[]byte("v=0\r\n" +
+			"o=- 1001 1 IN \r\n" +
+			"s=VCP IPC Realtime stream\r\n" +
+			"m=video 0 RTP/AVP 105\r\n" +
+			"c=IN\r\n" +
+			"a=control:rtsp://10.0.0.1/media/video1/video\r\n" +
+			"a=rtpmap:105 H264/90000\r\n" +
+			"a=fmtp:105 profile-level-id=640028; packetization-mode=1; " +
+			"sprop-parameter-sets=Z2QAKKw7UDwBE/LCAAAH0AAA6mEI,aOqPLA==\r\n" +
+			"a=recvonly\r\n" +
+			"m=application 0 RTP/AVP 107\r\n" +
+			"c=IN\r\n" +
+			"a=control:rtsp://10.0.0.1/media/video1/metadata\r\n" +
+			"a=rtpmap:107 vnd.onvif.metadata/90000\r\n" +
+			"a=fmtp:107 DecoderTag=h3c-v3 RTCP=0\r\n" +
+			"a=recvonly\r\n"),
+		[]byte("v=0\r\n" +
+			"o=- 1001 1 IN IP4 \r\n" +
+			"s=VCP IPC Realtime stream\r\n" +
+			"m=video 0 RTP/AVP 105\r\n" +
+			"a=control:rtsp://10.0.0.1/media/video1/video\r\n" +
+			"a=rtpmap:105 H264/90000\r\n" +
+			"a=fmtp:105 profile-level-id=640028; packetization-mode=1; " +
+			"sprop-parameter-sets=Z2QAKKw7UDwBE/LCAAAH0AAA6mEI,aOqPLA==\r\n" +
+			"a=recvonly\r\n" +
+			"m=application 0 RTP/AVP 107\r\n" +
+			"a=control:rtsp://10.0.0.1/media/video1/metadata\r\n" +
+			"a=rtpmap:107 vnd.onvif.metadata/90000\r\n" +
+			"a=fmtp:107 DecoderTag=h3c-v3 RTCP=0\r\n" +
+			"a=recvonly\r\n"),
+		SessionDescription{
+			Origin: psdp.Origin{
+				Username:       "-",
+				SessionID:      1001,
+				SessionVersion: 1,
+				NetworkType:    "IN",
+				AddressType:    "IP4",
+			},
+			SessionName: "VCP IPC Realtime stream",
+			MediaDescriptions: []*psdp.MediaDescription{
+				{
+					MediaName: psdp.MediaName{
+						Media:   "video",
+						Protos:  []string{"RTP", "AVP"},
+						Formats: []string{"105"},
+					},
+					Attributes: []psdp.Attribute{
+						{
+							Key:   "control",
+							Value: "rtsp://10.0.0.1/media/video1/video",
+						},
+						{
+							Key:   "rtpmap",
+							Value: "105 H264/90000",
+						},
+						{
+							Key: "fmtp",
+							Value: "105 profile-level-id=640028; packetization-mode=1; " +
+								"sprop-parameter-sets=Z2QAKKw7UDwBE/LCAAAH0AAA6mEI,aOqPLA==",
+						},
+						{
+							Key:   "recvonly",
+							Value: "",
+						},
+					},
+				},
+				{
+					MediaName: psdp.MediaName{
+						Media:   "application",
+						Protos:  []string{"RTP", "AVP"},
+						Formats: []string{"107"},
+					},
+					Attributes: []psdp.Attribute{
+						{
+							Key:   "control",
+							Value: "rtsp://10.0.0.1/media/video1/metadata",
+						},
+						{
+							Key:   "rtpmap",
+							Value: "107 vnd.onvif.metadata/90000",
+						},
+						{
+							Key:   "fmtp",
+							Value: "107 DecoderTag=h3c-v3 RTCP=0",
+						},
+						{
+							Key:   "recvonly",
+							Value: "",
+						},
+					},
+				},
+			},
+		},
+	},
 }
 
 func TestUnmarshal(t *testing.T) {