diff --git a/plugin/transcode/api.go b/plugin/transcode/api.go
index 74c75fa..3030a53 100755
--- a/plugin/transcode/api.go
+++ b/plugin/transcode/api.go
@@ -269,7 +269,10 @@ func (t *TranscodePlugin) Launch(ctx context.Context, transReq *pb.TransRequest)
 	if transReq.Scale != "" {
 		transReq.Scale = fmt.Sprintf(" -s %s ", transReq.Scale)
 	}
-	conf = strings.Join(inputs, " -i ") + fmt.Sprintf(" %s ", transReq.LogLevel) + fmt.Sprintf(" %s ", filterStr) + transReq.Scale + transReq.Decodec
+	if transReq.GlobalOptions != "" {
+		transReq.GlobalOptions = fmt.Sprintf(" %s ", transReq.GlobalOptions)
+	}
+	conf = strings.Join(inputs, " -i ") + fmt.Sprintf(" %s ", filterStr) + transReq.Scale + transReq.Encodec
 
 	cfg.Output = []config.TransfromOutput{
 		{
@@ -278,6 +281,10 @@ func (t *TranscodePlugin) Launch(ctx context.Context, transReq *pb.TransRequest)
 			Conf:       conf,
 		},
 	}
+	cfg.Input = map[string]any{
+		"args":  transReq.GlobalOptions,
+		"codec": transReq.Decodec,
+	}
 
 	t.Transform(transReq.SrcStream, cfg)
 	return
diff --git a/plugin/transcode/pb/transcode.pb.go b/plugin/transcode/pb/transcode.pb.go
index 05e639b..bfb24ff 100644
--- a/plugin/transcode/pb/transcode.pb.go
+++ b/plugin/transcode/pb/transcode.pb.go
@@ -39,7 +39,7 @@ type OverlayConfig struct {
 	FontSize        string `protobuf:"bytes,9,opt,name=font_size,json=fontSize,proto3" json:"font_size,omitempty"`                      // 字体大小
 	FontColor       string `protobuf:"bytes,10,opt,name=font_color,json=fontColor,proto3" json:"font_color,omitempty"`                  // r,g,b 颜色
 	TextPosition    string `protobuf:"bytes,11,opt,name=text_position,json=textPosition,proto3" json:"text_position,omitempty"`         // x,y 文字在图片上的位置
-	LineSpacing     string `protobuf:"bytes,12,opt,name=line_spacing,json=lineSpacing,proto3" json:"line_spacing,omitempty"`            //文字间距
+	LineSpacing     string `protobuf:"bytes,12,opt,name=line_spacing,json=lineSpacing,proto3" json:"line_spacing,omitempty"`            //文字行间距
 }
 
 func (x *OverlayConfig) Reset() {
@@ -161,13 +161,13 @@ type TransRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	SrcStream      string           `protobuf:"bytes,1,opt,name=src_stream,json=srcStream,proto3" json:"src_stream,omitempty"` // 原始流
-	DstStream      string           `protobuf:"bytes,2,opt,name=dst_stream,json=dstStream,proto3" json:"dst_stream,omitempty"` // 输出流
-	Encodec        string           `protobuf:"bytes,3,opt,name=encodec,proto3" json:"encodec,omitempty"`
-	Decodec        string           `protobuf:"bytes,4,opt,name=decodec,proto3" json:"decodec,omitempty"`
-	Scale          string           `protobuf:"bytes,5,opt,name=scale,proto3" json:"scale,omitempty"`
-	LogLevel       string           `protobuf:"bytes,6,opt,name=log_level,json=logLevel,proto3" json:"log_level,omitempty"`
-	OverlayConfigs []*OverlayConfig `protobuf:"bytes,7,rep,name=overlay_configs,json=overlayConfigs,proto3" json:"overlay_configs,omitempty"`
+	GlobalOptions  string           `protobuf:"bytes,1,opt,name=global_options,json=globalOptions,proto3" json:"global_options,omitempty"` // 全局参数
+	SrcStream      string           `protobuf:"bytes,2,opt,name=src_stream,json=srcStream,proto3" json:"src_stream,omitempty"`             // 原始流
+	DstStream      string           `protobuf:"bytes,3,opt,name=dst_stream,json=dstStream,proto3" json:"dst_stream,omitempty"`             // 输出流
+	Encodec        string           `protobuf:"bytes,4,opt,name=encodec,proto3" json:"encodec,omitempty"`
+	Decodec        string           `protobuf:"bytes,5,opt,name=decodec,proto3" json:"decodec,omitempty"`
+	Scale          string           `protobuf:"bytes,6,opt,name=scale,proto3" json:"scale,omitempty"`
+	OverlayConfigs []*OverlayConfig `protobuf:"bytes,8,rep,name=overlay_configs,json=overlayConfigs,proto3" json:"overlay_configs,omitempty"`
 }
 
 func (x *TransRequest) Reset() {
@@ -200,6 +200,13 @@ func (*TransRequest) Descriptor() ([]byte, []int) {
 	return file_transcode_proto_rawDescGZIP(), []int{1}
 }
 
+func (x *TransRequest) GetGlobalOptions() string {
+	if x != nil {
+		return x.GlobalOptions
+	}
+	return ""
+}
+
 func (x *TransRequest) GetSrcStream() string {
 	if x != nil {
 		return x.SrcStream
@@ -235,13 +242,6 @@ func (x *TransRequest) GetScale() string {
 	return ""
 }
 
-func (x *TransRequest) GetLogLevel() string {
-	if x != nil {
-		return x.LogLevel
-	}
-	return ""
-}
-
 func (x *TransRequest) GetOverlayConfigs() []*OverlayConfig {
 	if x != nil {
 		return x.OverlayConfigs
@@ -337,43 +337,43 @@ var file_transcode_proto_rawDesc = []byte{
 	0x69, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x0b, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x74, 0x65, 0x78,
 	0x74, 0x50, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x21, 0x0a, 0x0c, 0x6c, 0x69, 0x6e,
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 }
 
 var (
diff --git a/plugin/transcode/pb/transcode.proto b/plugin/transcode/pb/transcode.proto
index d33d383..86efef3 100644
--- a/plugin/transcode/pb/transcode.proto
+++ b/plugin/transcode/pb/transcode.proto
@@ -33,17 +33,17 @@ message OverlayConfig {
   string font_size = 9;        // 字体大小
   string font_color = 10;      // r,g,b 颜色
   string text_position = 11;   // x,y 文字在图片上的位置
-  string line_spacing = 12;  //文字间距
+  string line_spacing = 12;   //文字行间距
 }
 
 message TransRequest {
-  string src_stream = 1;                    // 原始流
-  string dst_stream = 2;                    // 输出流
-  string encodec = 3;
-  string decodec = 4;
-  string scale = 5;
-  string log_level = 6;
-  repeated OverlayConfig overlay_configs = 7;
+  string global_options = 1;                  // 全局参数
+  string src_stream = 2;                    // 原始流
+  string dst_stream = 3;                    // 输出流
+  string encodec = 4;
+  string decodec = 5;
+  string scale = 6;
+  repeated OverlayConfig overlay_configs = 8;
 }
 
 message CloseRequest {