diff --git a/README.md b/README.md
index a2e9f25..bcba4ad 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 ## m3u8d 一款m3u8下载工具
 * 提供windows图形界面(Qt), mac、linux命令行, linux支持arm和386 
 * 使用gomedia转换、合并ts格式为mp4
-* windows自带GUI界面的版本下载: [m3u8d_qt_v1.4_windows_amd64.exe](https://github.com/orestonce/m3u8d/releases/download/v1.4/m3u8d_qt_v1.4_windows_amd64.exe):
+* windows自带GUI界面的版本下载: [m3u8d_qt_v1.4.2_windows_amd64.exe](https://github.com/orestonce/m3u8d/releases/download/v1.4.2/m3u8d_qt_v1.4.2_windows_amd64.exe):
     ![](m3u8d-qt/screenshot.png)
 * 全部版本下载, 包括windows图形界面/linux命令行/mac命令行: https://github.com/orestonce/m3u8d/releases    
 
@@ -23,7 +23,7 @@
   * [x] 充分测试后，使用 https://github.com/yapingcat/gomedia 代替ffmpeg进行格式转换
   * [x] 支持嵌套m3u8的url
   * [x] 支持设置代理
-  * [ ] 增加openwrt路由器的mipsle二进制
+  * [x] 增加openwrt路由器的mipsle二进制
   * [ ] 支持从curl命令解析出需要的header、auth-basic、cookie等信息，正如 https://github.com/cxjava/m3u8-downloader 一样
 ## 二次开发操作手册:
 * 如果只开发命令行版本, 则只需要修改*.go文件, 然后编译 cmd/main.go 即可
diff --git a/cmd/main.go b/cmd/main.go
index 932a69a..e1193b3 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -9,6 +9,10 @@ import (
 var rootCmd = cobra.Command{
 	Use: "m3u8下载工具",
 	Run: func(cmd *cobra.Command, args []string) {
+		if gRunReq.M3u8Url == "" {
+			cmd.Help()
+			return
+		}
 		m3u8d.SetShowProgressBar()
 		resp := m3u8d.RunDownload(gRunReq)
 		fmt.Println()	// 有进度条,所以需要换行
diff --git a/export/main.go b/export/main.go
index 6145b6c..4c204eb 100644
--- a/export/main.go
+++ b/export/main.go
@@ -11,7 +11,7 @@ import (
 
 func main() {
 	BuildCliBinary()   // 编译二进制
-	//CreateLibForQtUi() // 创建Qt需要使用的.a库文件
+	CreateLibForQtUi() // 创建Qt需要使用的.a库文件
 }
 
 func BuildCliBinary() {
@@ -43,7 +43,7 @@ func BuildCliBinary() {
 		},
 	}
 	for _, cfg := range list {
-		name := "m3u8d_cli_v1.4.1_" + cfg.GOOS + "_" + cfg.GOARCH + cfg.Ext
+		name := "m3u8d_cli_v1.4.2_" + cfg.GOOS + "_" + cfg.GOARCH + cfg.Ext
 		cmd := exec.Command("go", "build", "-ldflags", "-s -w", "-o", filepath.Join(wd, "bin", name))
 		cmd.Dir = filepath.Join(wd, "cmd")
 		cmd.Env = append(os.Environ(), "GOOS="+cfg.GOOS)
diff --git a/go.mod b/go.mod
index 2066ecd..bbc7a2a 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/orestonce/go2cpp v0.0.0-20220605110533-c77a8dd7fdfd
 	github.com/orestonce/gopool v0.0.0-20220508090328-d7d56d45b171
 	github.com/spf13/cobra v1.4.0
-	github.com/yapingcat/gomedia v0.0.0-20220621113316-0cd64b0770ac
+	github.com/yapingcat/gomedia v0.0.0-20220621130152-95fa86fac794
 	golang.org/x/net v0.0.0-20220617184016-355a448f1bc9
 )
 
diff --git a/go.sum b/go.sum
index 37c95e4..8b9d377 100644
--- a/go.sum
+++ b/go.sum
@@ -12,8 +12,8 @@ github.com/spf13/cobra v1.4.0 h1:y+wJpx64xcgO1V+RcnwW0LEHxTKRi2ZDPSBjWnrg88Q=
 github.com/spf13/cobra v1.4.0/go.mod h1:Wo4iy3BUC+X2Fybo0PDqwJIv3dNRiZLHQymsfxlB84g=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/yapingcat/gomedia v0.0.0-20220621113316-0cd64b0770ac h1:BIZyaWddLxEAJuegSdb+SUlestsy0gUP5AvdaP8ilzc=
-github.com/yapingcat/gomedia v0.0.0-20220621113316-0cd64b0770ac/go.mod h1:WSZ59bidJOO40JSJmLqlkBJrjZCtjbKKkygEMfzY/kc=
+github.com/yapingcat/gomedia v0.0.0-20220621130152-95fa86fac794 h1:6LKuTqBiq0t7gdwYtWZf2Eq8eOQWcpaSxufybzqj3vo=
+github.com/yapingcat/gomedia v0.0.0-20220621130152-95fa86fac794/go.mod h1:WSZ59bidJOO40JSJmLqlkBJrjZCtjbKKkygEMfzY/kc=
 golang.org/x/net v0.0.0-20220617184016-355a448f1bc9 h1:Yqz/iviulwKwAREEeUd3nbBFn0XuyJqkoft2IlrvOhc=
 golang.org/x/net v0.0.0-20220617184016-355a448f1bc9/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/merge.go b/merge.go
index b3909ce..eda9f8d 100644
--- a/merge.go
+++ b/merge.go
@@ -24,7 +24,10 @@ func MergeTsFileListToSingleMp4(req MergeTsFileListToSingleMp4_Req) (err error)
 	}
 	defer mp4file.Close()
 
-	muxer := mp4.CreateMp4Muxer(mp4file)
+	muxer, err := mp4.CreateMp4Muxer(mp4file)
+	if err != nil {
+		return err
+	}
 	vtid := muxer.AddVideoTrack(mp4.MP4_CODEC_H264)
 	atid := muxer.AddAudioTrack(mp4.MP4_CODEC_AAC, 0, 16, 44100)
 
@@ -68,6 +71,10 @@ func MergeTsFileListToSingleMp4(req MergeTsFileListToSingleMp4_Req) (err error)
 	if err != nil {
 		return err
 	}
+	err = mp4file.Sync()
+	if err != nil {
+		return err
+	}
 	DrawProgressBar(1, 1)
-	return err
+	return nil
 }