Fix missing space after argument

lib/encoder.js

@@ -89,6 +89,7 @@ class Encoder {
             command += `-qmax 60 `
             command += `-g 240 `
             command += `-row-mt 1 "${out}.webm" `
+            console.log(command)
             return [command, duration, false]
         }
 
@@ -124,7 +125,7 @@ class Encoder {
         command += `-g 240 `
 
         command += `-row-mt 1 -pass 2 "${out}.webm" `
-
+        console.log(command)
         return [command, duration, isTwoPass]
     }