diff --git a/lib/options.js b/lib/options.js
index 4c32804..5a3a273 100644
--- a/lib/options.js
+++ b/lib/options.js
@@ -14,7 +14,8 @@ var defaults = exports.defaults = {
   audioChannels: 2,
   format: 'mp4',
   useSubripSubtitles: false,
-  subtitleStyle: null
+  subtitleStyle: null,
+  subtitleOptions: null,
 }
 
 exports.define = function (options) {
diff --git a/lib/render.js b/lib/render.js
index 6fc8054..9539769 100644
--- a/lib/render.js
+++ b/lib/render.js
@@ -134,7 +134,16 @@ function renderVideo(videoshow, options, forwardEvent, cb) {
     })
 
     if (subtitles) {
-      options.push('-vf subtitles=\'' + subtitles + '\'')
+      const subtitleOptions = [
+        '\'' + subtitles + '\'',
+      ]
+      if (params.subtitleOptions) {
+        Object.keys(params.subtitleOptions).forEach(key => {
+          subtitleOptions.push(key + '=' + '\'' + params.subtitleOptions[key] + '\'');
+        });
+      }
+
+      options.push(`-vf subtitles=` + subtitleOptions.join(':'))
     }
 
     if (videoOptions.pixelFormat) {
@@ -222,15 +231,15 @@ function getImageSubtitles(videoshow) {
 
   var length = 0
   var subtitles = videoshow.images
-  .map(function (image, index) {
-    var offset = calculateOffsetDelay(index)
-    if (image.caption) {
-      return renderCaption(image, length++, offset, params)
-    }
-  })
-  .filter(function (caption) {
-    return caption != null
-  })
+    .map(function (image, index) {
+      var offset = calculateOffsetDelay(index)
+      if (image.caption) {
+        return renderCaption(image, length++, offset, params)
+      }
+    })
+    .filter(function (caption) {
+      return caption != null
+    })
 
   if (!subtitles.length) {
     return
@@ -240,7 +249,11 @@ function getImageSubtitles(videoshow) {
     extension = '.srt'
     subtitles = subrip.stringify(subtitles)
   } else {
-    subtitles = substation.stringify(subtitles, params.subtitleStyle)
+    subtitles = substation.stringify(subtitles, {
+      'V4 Styles': {
+        'Style': params.subtitleStyle,
+      }
+    })
   }
 
   filepath = randomName() + extension
diff --git a/lib/substation.js b/lib/substation.js
index fc1314c..17b1a87 100644
--- a/lib/substation.js
+++ b/lib/substation.js
@@ -83,8 +83,8 @@ var defaultParams = {
   }
 }
 
-exports.stringify = function (captions, styles) {
-  var params = mergeParams(styles)
+exports.stringify = function (captions, params) {
+  var params = mergeParams(params)
 
   captions.forEach(function (caption) {
     var subtitle = merge({}, captionParams, {
@@ -103,9 +103,8 @@ exports.stringify = function (captions, styles) {
   return substation(params)
 }
 
-function mergeParams(styles) {
-  var params = merge({}, defaultParams)
-  merge(params['V4 Styles'].Style, styles)
+function mergeParams(params) {
+  var params = merge({}, defaultParams, params);
 
   return Object.keys(params).map(function (key) {
     var body = params[key]