diff --git a/track.go b/track.go
index d2754058..b259bf4d 100644
--- a/track.go
+++ b/track.go
@@ -22,7 +22,8 @@ type Track interface {
 }
 
 func newTrackFromMediaDescription(md *psdp.MediaDescription) (Track, error) {
-	if md.MediaName.Media == "video" {
+	switch md.MediaName.Media {
+	case "video":
 		if rtpmap, ok := md.Attribute("rtpmap"); ok {
 			rtpmap = strings.TrimSpace(rtpmap)
 
@@ -36,9 +37,8 @@ func newTrackFromMediaDescription(md *psdp.MediaDescription) (Track, error) {
 				return newTrackH264FromMediaDescription(payloadType, md)
 			}
 		}
-	}
 
-	if md.MediaName.Media == "audio" {
+	case "audio":
 		if rtpmap, ok := md.Attribute("rtpmap"); ok {
 			if vals := strings.Split(rtpmap, " "); len(vals) == 2 {
 				tmp, err := strconv.ParseInt(vals[0], 10, 64)
@@ -52,7 +52,7 @@ func newTrackFromMediaDescription(md *psdp.MediaDescription) (Track, error) {
 				}
 
 				if strings.HasPrefix(vals[1], "opus/") {
-					return newTrackOpusFromMediaDescription(payloadType, md)
+					return newTrackOpusFromMediaDescription(payloadType, rtpmap, md)
 				}
 			}
 		}
diff --git a/track_aac.go b/track_aac.go
index 3ce550f1..22b97b77 100644
--- a/track_aac.go
+++ b/track_aac.go
@@ -46,7 +46,9 @@ func NewTrackAAC(payloadType uint8, typ int, sampleRate int,
 	}, nil
 }
 
-func newTrackAACFromMediaDescription(payloadType uint8, md *psdp.MediaDescription) (*TrackAAC, error) {
+func newTrackAACFromMediaDescription(
+	payloadType uint8,
+	md *psdp.MediaDescription) (*TrackAAC, error) {
 	control := trackFindControl(md)
 
 	v, ok := md.Attribute("fmtp")
diff --git a/track_aac_test.go b/track_aac_test.go
index 7e7925ab..bee482ca 100644
--- a/track_aac_test.go
+++ b/track_aac_test.go
@@ -16,190 +16,6 @@ func TestTrackAACNew(t *testing.T) {
 	require.Equal(t, []byte{0x01, 0x02}, track.aotSpecificConfig)
 }
 
-func TestTrackAACNewFromMediaDescription(t *testing.T) {
-	for _, ca := range []struct {
-		name  string
-		md    *psdp.MediaDescription
-		track *TrackAAC
-	}{
-		{
-			"generic",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 profile-level-id=1; mode=AAC-hbr; sizelength=13; indexlength=3; indexdeltalength=3; config=1190",
-					},
-				},
-			},
-			&TrackAAC{
-				payloadType:  96,
-				typ:          2,
-				sampleRate:   48000,
-				channelCount: 2,
-				mpegConf:     []byte{0x11, 0x90},
-			},
-		},
-		{
-			"vlc rtsp server",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 profile-level-id=1; mode=AAC-hbr; sizelength=13; indexlength=3; indexdeltalength=3; config=1190;",
-					},
-				},
-			},
-			&TrackAAC{
-				payloadType:  96,
-				typ:          2,
-				sampleRate:   48000,
-				channelCount: 2,
-				mpegConf:     []byte{0x11, 0x90},
-			},
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			track, err := newTrackAACFromMediaDescription(96, ca.md)
-			require.NoError(t, err)
-			require.Equal(t, ca.track, track)
-		})
-	}
-}
-
-func TestTrackAACNewFromMediaDescriptionErrors(t *testing.T) {
-	for _, ca := range []struct {
-		name string
-		md   *psdp.MediaDescription
-		err  string
-	}{
-		{
-			"missing fmtp",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-				},
-			},
-			"fmtp attribute is missing",
-		},
-		{
-			"invalid fmtp",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96",
-					},
-				},
-			},
-			"invalid fmtp (96)",
-		},
-		{
-			"fmtp without key",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 profile-level-id",
-					},
-				},
-			},
-			"invalid fmtp (96 profile-level-id)",
-		},
-		{
-			"missing config",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 profile-level-id=1",
-					},
-				},
-			},
-			"config is missing (96 profile-level-id=1)",
-		},
-		{
-			"invalid config",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 profile-level-id=1; config=zz",
-					},
-				},
-			},
-			"invalid AAC config (zz)",
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			_, err := newTrackAACFromMediaDescription(96, ca.md)
-			require.EqualError(t, err, ca.err)
-		})
-	}
-}
-
 func TestTrackAACClone(t *testing.T) {
 	track, err := NewTrackAAC(96, 2, 48000, 2, []byte{0x01, 0x02})
 	require.NoError(t, err)
diff --git a/track_generic_test.go b/track_generic_test.go
index fd699e0e..2d30833b 100644
--- a/track_generic_test.go
+++ b/track_generic_test.go
@@ -7,148 +7,30 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestTrackGenericNewFromMediaDescription(t *testing.T) {
-	for _, ca := range []struct {
-		name  string
-		md    *psdp.MediaDescription
-		track *TrackGeneric
-	}{
-		{
-			"pcma",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"8"},
+func TestTrackGenericClone(t *testing.T) {
+	track, err := newTrackGenericFromMediaDescription(
+		&psdp.MediaDescription{
+			MediaName: psdp.MediaName{
+				Media:   "video",
+				Port:    psdp.RangedPort{Value: 0},
+				Protos:  []string{"RTP", "AVP"},
+				Formats: []string{"98", "96"},
+			},
+			Attributes: []psdp.Attribute{
+				{
+					Key:   "rtpmap",
+					Value: "98 H265/90000",
+				},
+				{
+					Key: "fmtp",
+					Value: "98 profile-id=1; sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAlqwJ; " +
+						"sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAlqADwIAQ5Za5JMmuWcBSSgAAB9AAAHUwgkA=; sprop-pps=RAHgdrAwxmQ=",
 				},
 			},
-			&TrackGeneric{
-				clockRate: 8000,
-				media:     "audio",
-				formats:   []string{"8"},
-			},
-		},
-		{
-			"pcmu",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Port:    psdp.RangedPort{Value: 49170},
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"0"},
-				},
-			},
-			&TrackGeneric{
-				clockRate: 8000,
-				media:     "audio",
-				formats:   []string{"0"},
-			},
-		},
-		{
-			"multiple formats",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Port:    psdp.RangedPort{Value: 0},
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"98", "96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "98 H265/90000",
-					},
-					{
-						Key: "fmtp",
-						Value: "98 profile-id=1; sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAlqwJ; " +
-							"sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAlqADwIAQ5Za5JMmuWcBSSgAAB9AAAHUwgkA=; sprop-pps=RAHgdrAwxmQ=",
-					},
-				},
-			},
-			&TrackGeneric{
-				clockRate: 90000,
-				media:     "video",
-				formats:   []string{"98", "96"},
-				rtpmap:    "98 H265/90000",
-				fmtp: "98 profile-id=1; sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAlqwJ; " +
-					"sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAlqADwIAQ5Za5JMmuWcBSSgAAB9AAAHUwgkA=; sprop-pps=RAHgdrAwxmQ=",
-			},
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			track, err := newTrackGenericFromMediaDescription(ca.md)
-			require.NoError(t, err)
-			require.Equal(t, ca.track, track)
 		})
-	}
-}
+	require.NoError(t, err)
 
-func TestTrackGenericNewFromMediaDescriptionErrors(t *testing.T) {
-	for _, ca := range []struct {
-		name string
-		md   *psdp.MediaDescription
-		err  string
-	}{
-		{
-			"no formats",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{},
-				},
-			},
-			"unable to get clock rate: no formats provided",
-		},
-		{
-			"no rtpmap",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"90"},
-				},
-			},
-			"unable to get clock rate: attribute 'rtpmap' not found",
-		},
-		{
-			"invalid rtpmap 1",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96",
-					},
-				},
-			},
-			"unable to get clock rate: invalid rtpmap (96)",
-		},
-		{
-			"invalid rtpmap 2",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 mpeg4-generic",
-					},
-				},
-			},
-			"unable to get clock rate: invalid rtpmap (96 mpeg4-generic)",
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			_, err := newTrackGenericFromMediaDescription(ca.md)
-			require.EqualError(t, err, ca.err)
-		})
-	}
+	copy := track.clone()
+	require.NotSame(t, track, copy)
+	require.Equal(t, track, copy)
 }
diff --git a/track_h264.go b/track_h264.go
index bb51cddb..9477eeb9 100644
--- a/track_h264.go
+++ b/track_h264.go
@@ -77,7 +77,8 @@ func NewTrackH264(payloadType uint8, sps []byte, pps []byte, extradata []byte) (
 	}, nil
 }
 
-func newTrackH264FromMediaDescription(payloadType uint8,
+func newTrackH264FromMediaDescription(
+	payloadType uint8,
 	md *psdp.MediaDescription) (*TrackH264, error) {
 	control := trackFindControl(md)
 
diff --git a/track_h264_test.go b/track_h264_test.go
index 0057a96a..f64c14bb 100644
--- a/track_h264_test.go
+++ b/track_h264_test.go
@@ -173,119 +173,6 @@ func TestTrackH264New(t *testing.T) {
 	require.Equal(t, []byte{0x05, 0x06}, track.extradata)
 }
 
-func TestTrackH264NewFromMediaDescription(t *testing.T) {
-	for _, ca := range []struct {
-		name  string
-		md    *psdp.MediaDescription
-		track *TrackH264
-	}{
-		{
-			"generic",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 H264/90000",
-					},
-					{
-						Key: "fmtp",
-						Value: "96 packetization-mode=1; " +
-							"sprop-parameter-sets=Z2QADKw7ULBLQgAAAwACAAADAD0I,aO48gA==; profile-level-id=64000C",
-					},
-				},
-			},
-			&TrackH264{
-				payloadType: 96,
-				sps: []byte{
-					0x67, 0x64, 0x00, 0x0c, 0xac, 0x3b, 0x50, 0xb0,
-					0x4b, 0x42, 0x00, 0x00, 0x03, 0x00, 0x02, 0x00,
-					0x00, 0x03, 0x00, 0x3d, 0x08,
-				},
-				pps: []byte{
-					0x68, 0xee, 0x3c, 0x80,
-				},
-			},
-		},
-		{
-			"vlc rtsp server",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 H264/90000",
-					},
-					{
-						Key: "fmtp",
-						Value: "96 packetization-mode=1;profile-level-id=64001f;" +
-							"sprop-parameter-sets=Z2QAH6zZQFAFuwFsgAAAAwCAAAAeB4wYyw==,aOvjyyLA;",
-					},
-				},
-			},
-			&TrackH264{
-				payloadType: 96,
-				sps: []byte{
-					0x67, 0x64, 0x00, 0x1f, 0xac, 0xd9, 0x40, 0x50,
-					0x05, 0xbb, 0x01, 0x6c, 0x80, 0x00, 0x00, 0x03,
-					0x00, 0x80, 0x00, 0x00, 0x1e, 0x07, 0x8c, 0x18,
-					0xcb,
-				},
-				pps: []byte{
-					0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0,
-				},
-			},
-		},
-		{
-			"sprop-parameter-sets with extra data",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "video",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 H264/90000",
-					},
-					{
-						Key: "fmtp",
-						Value: "96 packetization-mode=1; " +
-							"sprop-parameter-sets=Z2QAKawTMUB4BEfeA+oCAgPgAAADACAAAAZSgA==,aPqPLA==,aF6jzAMA; profile-level-id=640029",
-					},
-				},
-			},
-			&TrackH264{
-				payloadType: 96,
-				sps: []byte{
-					0x67, 0x64, 0x00, 0x29, 0xac, 0x13, 0x31, 0x40,
-					0x78, 0x04, 0x47, 0xde, 0x03, 0xea, 0x02, 0x02,
-					0x03, 0xe0, 0x00, 0x00, 0x03, 0x00, 0x20, 0x00,
-					0x00, 0x06, 0x52, 0x80,
-				},
-				pps: []byte{
-					0x68, 0xfa, 0x8f, 0x2c,
-				},
-			},
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			track, err := newTrackH264FromMediaDescription(96, ca.md)
-			require.NoError(t, err)
-			require.Equal(t, ca.track, track)
-		})
-	}
-}
-
 func TestTrackH264Clone(t *testing.T) {
 	track, err := NewTrackH264(96, []byte{0x01, 0x02}, []byte{0x03, 0x04}, []byte{0x05, 0x06})
 	require.NoError(t, err)
diff --git a/track_opus.go b/track_opus.go
index b40af878..4882a4a9 100644
--- a/track_opus.go
+++ b/track_opus.go
@@ -27,18 +27,14 @@ func NewTrackOpus(payloadType uint8, sampleRate int, channelCount int) (*TrackOp
 	}, nil
 }
 
-func newTrackOpusFromMediaDescription(payloadType uint8,
+func newTrackOpusFromMediaDescription(
+	payloadType uint8,
+	rtpmap string,
 	md *psdp.MediaDescription) (*TrackOpus, error) {
 	control := trackFindControl(md)
-
-	v, ok := md.Attribute("rtpmap")
-	if !ok {
-		return nil, fmt.Errorf("rtpmap attribute is missing")
-	}
-
-	tmp := strings.SplitN(v, "/", 3)
+	tmp := strings.SplitN(rtpmap, "/", 3)
 	if len(tmp) != 3 {
-		return nil, fmt.Errorf("invalid rtpmap (%v)", v)
+		return nil, fmt.Errorf("invalid rtpmap (%v)", rtpmap)
 	}
 
 	sampleRate, err := strconv.ParseInt(tmp[1], 10, 64)
diff --git a/track_opus_test.go b/track_opus_test.go
index dee910d0..5d22cd89 100644
--- a/track_opus_test.go
+++ b/track_opus_test.go
@@ -14,89 +14,6 @@ func TestTrackOpusNew(t *testing.T) {
 	require.Equal(t, 2, track.channelCount)
 }
 
-func TestTrackOpusNewFromMediaDescription(t *testing.T) {
-	for _, ca := range []struct {
-		name  string
-		md    *psdp.MediaDescription
-		track *TrackOpus
-	}{
-		{
-			"generic",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96 opus/48000/2",
-					},
-					{
-						Key:   "fmtp",
-						Value: "96 sprop-stereo=1",
-					},
-				},
-			},
-			&TrackOpus{
-				payloadType:  96,
-				sampleRate:   48000,
-				channelCount: 2,
-			},
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			track, err := newTrackOpusFromMediaDescription(96, ca.md)
-			require.NoError(t, err)
-			require.Equal(t, ca.track, track)
-		})
-	}
-}
-
-func TestTrackOpusNewFromMediaDescriptionErrors(t *testing.T) {
-	for _, ca := range []struct {
-		name string
-		md   *psdp.MediaDescription
-		err  string
-	}{
-		{
-			"missing rtpmap",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{},
-			},
-			"rtpmap attribute is missing",
-		},
-		{
-			"invalid rtpmap",
-			&psdp.MediaDescription{
-				MediaName: psdp.MediaName{
-					Media:   "audio",
-					Protos:  []string{"RTP", "AVP"},
-					Formats: []string{"96"},
-				},
-				Attributes: []psdp.Attribute{
-					{
-						Key:   "rtpmap",
-						Value: "96",
-					},
-				},
-			},
-			"invalid rtpmap (96)",
-		},
-	} {
-		t.Run(ca.name, func(t *testing.T) {
-			_, err := newTrackOpusFromMediaDescription(96, ca.md)
-			require.EqualError(t, err, ca.err)
-		})
-	}
-}
-
 func TestTracOpusClone(t *testing.T) {
 	track, err := NewTrackOpus(96, 96000, 4)
 	require.NoError(t, err)
diff --git a/track_test.go b/track_test.go
index 6d07945f..09147136 100644
--- a/track_test.go
+++ b/track_test.go
@@ -30,6 +30,22 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 				formats:   []string{"8"},
 			},
 		},
+		{
+			"pcmu",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Port:    psdp.RangedPort{Value: 49170},
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"0"},
+				},
+			},
+			&TrackGeneric{
+				clockRate: 8000,
+				media:     "audio",
+				formats:   []string{"0"},
+			},
+		},
 		{
 			"aac",
 			&psdp.MediaDescription{
@@ -84,6 +100,33 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 				mpegConf:     []byte{0x11, 0x90},
 			},
 		},
+		{
+			"aac vlc rtsp server",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+					{
+						Key:   "fmtp",
+						Value: "96 profile-level-id=1; mode=AAC-hbr; sizelength=13; indexlength=3; indexdeltalength=3; config=1190;",
+					},
+				},
+			},
+			&TrackAAC{
+				payloadType:  96,
+				typ:          2,
+				sampleRate:   48000,
+				channelCount: 2,
+				mpegConf:     []byte{0x11, 0x90},
+			},
+		},
 		{
 			"opus",
 			&psdp.MediaDescription{
@@ -160,6 +203,72 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 				payloadType: 96,
 			},
 		},
+		{
+			"h264 vlc rtsp server",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 H264/90000",
+					},
+					{
+						Key: "fmtp",
+						Value: "96 packetization-mode=1;profile-level-id=64001f;" +
+							"sprop-parameter-sets=Z2QAH6zZQFAFuwFsgAAAAwCAAAAeB4wYyw==,aOvjyyLA;",
+					},
+				},
+			},
+			&TrackH264{
+				payloadType: 96,
+				sps: []byte{
+					0x67, 0x64, 0x00, 0x1f, 0xac, 0xd9, 0x40, 0x50,
+					0x05, 0xbb, 0x01, 0x6c, 0x80, 0x00, 0x00, 0x03,
+					0x00, 0x80, 0x00, 0x00, 0x1e, 0x07, 0x8c, 0x18,
+					0xcb,
+				},
+				pps: []byte{
+					0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0,
+				},
+			},
+		},
+		{
+			"h264 sprop-parameter-sets with extra data",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 H264/90000",
+					},
+					{
+						Key: "fmtp",
+						Value: "96 packetization-mode=1; " +
+							"sprop-parameter-sets=Z2QAKawTMUB4BEfeA+oCAgPgAAADACAAAAZSgA==,aPqPLA==,aF6jzAMA; profile-level-id=640029",
+					},
+				},
+			},
+			&TrackH264{
+				payloadType: 96,
+				sps: []byte{
+					0x67, 0x64, 0x00, 0x29, 0xac, 0x13, 0x31, 0x40,
+					0x78, 0x04, 0x47, 0xde, 0x03, 0xea, 0x02, 0x02,
+					0x03, 0xe0, 0x00, 0x00, 0x03, 0x00, 0x20, 0x00,
+					0x00, 0x06, 0x52, 0x80,
+				},
+				pps: []byte{
+					0x68, 0xfa, 0x8f, 0x2c,
+				},
+			},
+		},
 		{
 			"h265",
 			&psdp.MediaDescription{
@@ -175,7 +284,7 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 					},
 					{
 						Key: "fmtp",
-						Value: "96 96 sprop-vps=QAEMAf//AWAAAAMAkAAAAwAAAwB4mZgJ; " +
+						Value: "96 sprop-vps=QAEMAf//AWAAAAMAkAAAAwAAAwB4mZgJ; " +
 							"sprop-sps=QgEBAWAAAAMAkAAAAwAAAwB4oAPAgBDllmZpJMrgEAAAAwAQAAADAeCA; sprop-pps=RAHBcrRiQA==",
 					},
 				},
@@ -185,10 +294,40 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 				media:     "video",
 				formats:   []string{"96"},
 				rtpmap:    "96 H265/90000",
-				fmtp: "96 96 sprop-vps=QAEMAf//AWAAAAMAkAAAAwAAAwB4mZgJ; " +
+				fmtp: "96 sprop-vps=QAEMAf//AWAAAAMAkAAAAwAAAwB4mZgJ; " +
 					"sprop-sps=QgEBAWAAAAMAkAAAAwAAAwB4oAPAgBDllmZpJMrgEAAAAwAQAAADAeCA; sprop-pps=RAHBcrRiQA==",
 			},
 		},
+		{
+			"multiple formats",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Port:    psdp.RangedPort{Value: 0},
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"98", "96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "98 H265/90000",
+					},
+					{
+						Key: "fmtp",
+						Value: "98 profile-id=1; sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAlqwJ; " +
+							"sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAlqADwIAQ5Za5JMmuWcBSSgAAB9AAAHUwgkA=; sprop-pps=RAHgdrAwxmQ=",
+					},
+				},
+			},
+			&TrackGeneric{
+				clockRate: 90000,
+				media:     "video",
+				formats:   []string{"98", "96"},
+				rtpmap:    "98 H265/90000",
+				fmtp: "98 profile-id=1; sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAlqwJ; " +
+					"sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAlqADwIAQ5Za5JMmuWcBSSgAAB9AAAHUwgkA=; sprop-pps=RAHgdrAwxmQ=",
+			},
+		},
 	} {
 		t.Run(ca.name, func(t *testing.T) {
 			track, err := newTrackFromMediaDescription(ca.md)
@@ -198,6 +337,177 @@ func TestTrackNewFromMediaDescription(t *testing.T) {
 	}
 }
 
+func TestTrackNewFromMediaDescriptionErrors(t *testing.T) {
+	for _, ca := range []struct {
+		name string
+		md   *psdp.MediaDescription
+		err  string
+	}{
+		{
+			"generic no formats",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{},
+				},
+			},
+			"unable to get clock rate: no formats provided",
+		},
+		{
+			"generic no rtpmap",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"90"},
+				},
+			},
+			"unable to get clock rate: attribute 'rtpmap' not found",
+		},
+		{
+			"generic invalid rtpmap 1",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96",
+					},
+				},
+			},
+			"unable to get clock rate: invalid rtpmap (96)",
+		},
+		{
+			"generic invalid rtpmap 2",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "video",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic",
+					},
+				},
+			},
+			"unable to get clock rate: invalid rtpmap (96 mpeg4-generic)",
+		},
+		{
+			"aac missing fmtp",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+				},
+			},
+			"fmtp attribute is missing",
+		},
+		{
+			"aac invalid fmtp",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+					{
+						Key:   "fmtp",
+						Value: "96",
+					},
+				},
+			},
+			"invalid fmtp (96)",
+		},
+		{
+			"aac fmtp without key",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+					{
+						Key:   "fmtp",
+						Value: "96 profile-level-id",
+					},
+				},
+			},
+			"invalid fmtp (96 profile-level-id)",
+		},
+		{
+			"aac missing config",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+					{
+						Key:   "fmtp",
+						Value: "96 profile-level-id=1",
+					},
+				},
+			},
+			"config is missing (96 profile-level-id=1)",
+		},
+		{
+			"aac invalid config",
+			&psdp.MediaDescription{
+				MediaName: psdp.MediaName{
+					Media:   "audio",
+					Protos:  []string{"RTP", "AVP"},
+					Formats: []string{"96"},
+				},
+				Attributes: []psdp.Attribute{
+					{
+						Key:   "rtpmap",
+						Value: "96 mpeg4-generic/48000/2",
+					},
+					{
+						Key:   "fmtp",
+						Value: "96 profile-level-id=1; config=zz",
+					},
+				},
+			},
+			"invalid AAC config (zz)",
+		},
+	} {
+		t.Run(ca.name, func(t *testing.T) {
+			_, err := newTrackFromMediaDescription(ca.md)
+			require.EqualError(t, err, ca.err)
+		})
+	}
+}
+
 func TestTrackURL(t *testing.T) {
 	for _, ca := range []struct {
 		name    string