diff --git a/src/video/merge.ts b/src/video/merge.ts
index ec13fce..a5c2285 100644
--- a/src/video/merge.ts
+++ b/src/video/merge.ts
@@ -32,7 +32,7 @@ function main(config: typings.IConfig, rtmpInputPath: string, filePath: string,
  */
 function command(): string {
   if (os.platform() !== 'win32') return 'mkvmerge';
-  return path.join(__dirname, '../../bin/mkvmerge.exe');
+  return '"' + path.join(__dirname, '../../bin/mkvmerge.exe') + '"';
 }
 
 /**
diff --git a/src/video/stream.ts b/src/video/stream.ts
index c4130bd..b73a1d7 100644
--- a/src/video/stream.ts
+++ b/src/video/stream.ts
@@ -22,5 +22,5 @@ function main(rtmpUrl: string, rtmpInputPath: string, swfUrl: string, filePath:
  */
 function command(): string {
   if (os.platform() !== 'win32') return 'rtmpdump';
-  return path.join(__dirname, '../../bin/rtmpdump.exe');
+  return '"' + path.join(__dirname, '../../bin/rtmpdump.exe') + '"';
 }
\ No newline at end of file