diff --git a/codec.go b/codec.go
index a4170e8..d833c47 100644
--- a/codec.go
+++ b/codec.go
@@ -19,85 +19,73 @@ var (
 			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeVP9, 90000, 0, "profile-id=2", videoRTCPFeedback},
 			PayloadType:        100,
 		},
+		{
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=100", nil},
+			PayloadType:        101,
+		},
 		{
 			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeVP9, 90000, 0, "profile-id=0", videoRTCPFeedback},
 			PayloadType:        98,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f", videoRTCPFeedback},
-			PayloadType:        102,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=98", nil},
+			PayloadType:        99,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f", videoRTCPFeedback},
-			PayloadType:        104,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f", videoRTCPFeedback},
+			PayloadType:        102,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f", videoRTCPFeedback},
-			PayloadType:        106,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=102", nil},
+			PayloadType:        103,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=64001f", videoRTCPFeedback},
-			PayloadType:        112,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f", videoRTCPFeedback},
+			PayloadType:        104,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f", videoRTCPFeedback},
-			PayloadType:        108,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=104", nil},
+			PayloadType:        105,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f", videoRTCPFeedback},
-			PayloadType:        39,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f", videoRTCPFeedback},
+			PayloadType:        106,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f", videoRTCPFeedback},
-			PayloadType:        127,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=106", nil},
+			PayloadType:        107,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeVP8, 90000, 0, "", videoRTCPFeedback},
-			PayloadType:        96,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=64001f", videoRTCPFeedback},
+			PayloadType:        112,
 		},
 		{
 			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=112", nil},
 			PayloadType:        113,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=100", nil},
-			PayloadType:        101,
-		},
-		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=98", nil},
-			PayloadType:        99,
-		},
-		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=45", nil},
-			PayloadType:        46,
-		},
-		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=39", nil},
-			PayloadType:        40,
-		},
-		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=127", nil},
-			PayloadType:        125,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f", videoRTCPFeedback},
+			PayloadType:        108,
 		},
 		{
 			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=108", nil},
 			PayloadType:        109,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=106", nil},
-			PayloadType:        107,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f", videoRTCPFeedback},
+			PayloadType:        39,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=104", nil},
-			PayloadType:        105,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=39", nil},
+			PayloadType:        40,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=96", nil},
-			PayloadType:        97,
+			RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f", videoRTCPFeedback},
+			PayloadType:        127,
 		},
 		{
-			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=102", nil},
-			PayloadType:        103,
+			RTPCodecCapability: webrtc.RTPCodecCapability{"video/rtx", 90000, 0, "apt=127", nil},
+			PayloadType:        125,
 		},
 	}