diff --git a/common/frame.go b/common/frame.go
index 8b0e991..83d6253 100644
--- a/common/frame.go
+++ b/common/frame.go
@@ -13,9 +13,10 @@ import (
 )
 
 func SplitAnnexB[T ~[]byte](frame T, process func(T), delimiter []byte) {
-	for found, after := true, frame; len(frame) > 0 && found; frame = after {
-		frame, after, found = bytes.Cut(frame, delimiter)
-		process(frame)
+	for after := frame; len(frame) > 0; frame = after {
+		if frame, after, _ = bytes.Cut(frame, delimiter); len(frame) > 0 {
+			process(frame)
+		}
 	}
 }
 
diff --git a/config/config.go b/config/config.go
index bd4e712..c413afd 100644
--- a/config/config.go
+++ b/config/config.go
@@ -143,7 +143,9 @@ func (config Config) Unmarshal(s any) {
 				}
 				fv.Set(s)
 			default:
-				fv.Set(value)
+				if value.IsValid() {
+					fv.Set(value)
+				}
 			}
 		}
 	}
diff --git a/track/base.go b/track/base.go
index f27069d..f317e0e 100644
--- a/track/base.go
+++ b/track/base.go
@@ -32,6 +32,7 @@ func (p *流速控制) 控制流速(绝对时间戳 uint32) {
 	// }
 	// 如果收到的帧的时间戳超过实际消耗的时间100ms就休息一下，100ms作为一个弹性区间防止频繁调用sleep
 	if 过快 := (数据时间差 - 实际时间差); 过快 > 100*time.Millisecond {
+		// fmt.Println("过快毫秒", 过快.Milliseconds())
 		// println("过快毫秒", p.name, 过快.Milliseconds())
 		if 过快 > p.等待上限 {
 			time.Sleep(p.等待上限)
@@ -224,6 +225,7 @@ func (av *Media) Flush() {
 		// 	av.Stream.Error("sub ring overflow", zap.Int("size", av.AVRing.Size), zap.String("name", av.Name))
 		// }
 	}
+
 	if av.起始时间.IsZero() {
 		curValue.DeltaTime = 0
 		av.重置(curValue.AbsTime)
@@ -233,6 +235,7 @@ func (av *Media) Flush() {
 	} else {
 		curValue.DeltaTime = curValue.AbsTime - preValue.AbsTime
 	}
+	// fmt.Println(av.Name,curValue.DTS, curValue.AbsTime, curValue.DeltaTime)
 	if curValue.AUList.Length > 0 {
 		// 补完RTP
 		if config.Global.EnableRTP && curValue.RTP.Length == 0 {
diff --git a/track/video.go b/track/video.go
index 313e514..754aea2 100644
--- a/track/video.go
+++ b/track/video.go
@@ -93,7 +93,6 @@ func (vt *Video) writeAnnexBSlice(nalu []byte) {
 }
 
 func (vt *Video) WriteAnnexB(pts uint32, dts uint32, frame []byte) {
-	// println("write annexb", len(frame), pts, dts)
 	if dts == 0 {
 		vt.generateTimestamp(pts)
 	} else {
diff --git a/util/buffer.go b/util/buffer.go
index 26a14db..8a94f01 100644
--- a/util/buffer.go
+++ b/util/buffer.go
@@ -2,12 +2,23 @@ package util
 
 import (
 	"encoding/binary"
+	"io"
 	"math"
 	"net"
 )
 
 type Buffer []byte
 
+func (b *Buffer) Read(buf []byte) (n int, err error) {
+	if !b.CanReadN(len(buf)) {
+		copy(buf, *b)
+		return b.Len(), io.EOF
+	}
+	ret := b.ReadN(len(buf))
+	copy(buf, ret)
+	return len(ret), err
+}
+
 func (b *Buffer) ReadN(n int) Buffer {
 	l := b.Len()
 	r := (*b)[:n]