diff --git a/README.md b/README.md
index b9f3bf8..6eb1f85 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ matchers: # list of file path prefix matchers, the first matching one is used
     path: '/out' # base directory for output
     containers: # allowable containers (mkv is recommended!)
     - mkv
+  ffargs: [] # extra arguments to ffmpeg (e.g. preset, profile, crf)
 logerr: true # optional, failures will be logged in <FileName>.err.log in the matcher dir
 ```
 
diff --git a/src/Start-Autoconv.ps1 b/src/Start-Autoconv.ps1
index dbbdd1d..df5d7b9 100644
--- a/src/Start-Autoconv.ps1
+++ b/src/Start-Autoconv.ps1
@@ -375,6 +375,7 @@ function Invoke-Ffmpeg {
         # for some reason ffmpeg defaults to not including LFE when downmixing to ac3
         $ffArgs += @('-ac', '6')
     }
+    $ffArgs += $Matcher.ffargs
     $destExtension = $null
     if (($sSrc.stream -or $SubFile) -and $Matcher.result.containers -Contains 'mkv') {
         $destExtension = 'mkv'
diff --git a/src/autoconv.json b/src/autoconv.json
index 6c80245..7d4ad72 100644
--- a/src/autoconv.json
+++ b/src/autoconv.json
@@ -13,7 +13,8 @@
                 "path": "/out",
                 "containers": ["mkv"],
                 "scodecs": ["srt"]
-            }
+            },
+            "ffargs": []
         }
     ],
     "logerr": false