diff --git a/pkg/remux/avpacket2rtmp.go b/pkg/remux/avpacket2rtmp.go
index 023e4e1..f641ac6 100644
--- a/pkg/remux/avpacket2rtmp.go
+++ b/pkg/remux/avpacket2rtmp.go
@@ -142,6 +142,7 @@ func AVPacket2RTMPMsg(pkt base.AVPacket) (msg base.RTMPMsg, err error) {
 		// TODO chef: 这段代码应该放在更合适的地方，或者在AVPacket中标识是否包含关键帧
 		for i := 0; i != len(pkt.Payload); {
 			naluSize := int(bele.BEUint32(pkt.Payload[i:]))
+
 			switch pkt.PayloadType {
 			case base.AVPacketPTAVC:
 				t := avc.ParseNALUType(pkt.Payload[i+4])
diff --git a/pkg/sdp/logic.go b/pkg/sdp/logic.go
index 93a1c8e..6fd741a 100644
--- a/pkg/sdp/logic.go
+++ b/pkg/sdp/logic.go
@@ -120,7 +120,7 @@ func ParseSDP2LogicContext(b []byte) (LogicContext, error) {
 				if md.AFmtPBase != nil {
 					ret.ASC, err = ParseASC(md.AFmtPBase)
 					if err != nil {
-						nazalog.Warnf("asc Parse error.")
+						return ret, err
 					}
 				} else {
 					nazalog.Warnf("aac afmtp not exist.")
@@ -140,7 +140,7 @@ func ParseSDP2LogicContext(b []byte) (LogicContext, error) {
 				if md.AFmtPBase != nil {
 					ret.SPS, ret.PPS, err = ParseSPSPPS(md.AFmtPBase)
 					if err != nil {
-						nazalog.Warnf("avc sps pps Parse error.")
+						return ret, err
 					}
 				} else {
 					nazalog.Warnf("avc afmtp not exist.")
@@ -150,7 +150,7 @@ func ParseSDP2LogicContext(b []byte) (LogicContext, error) {
 				if md.AFmtPBase != nil {
 					ret.VPS, ret.SPS, ret.PPS, err = ParseVPSSPSPPS(md.AFmtPBase)
 					if err != nil {
-						nazalog.Warnf("hevc vps sps pps Parse error.")
+						return ret, err
 					}
 				} else {
 					nazalog.Warnf("hevc afmtp not exist.")
diff --git a/pkg/sdp/raw.go b/pkg/sdp/raw.go
index bce046a..0a6205a 100644
--- a/pkg/sdp/raw.go
+++ b/pkg/sdp/raw.go
@@ -184,6 +184,7 @@ func ParseAFmtPBase(s string) (ret AFmtPBase, err error) {
 		pp = strings.TrimSpace(pp)
 		kv := strings.SplitN(pp, "=", 2)
 		if len(kv) != 2 {
+			err = ErrSDP
 			return
 		}
 		ret.Parameters[kv[0]] = kv[1]