diff --git a/lib/paperclip/paperclip_processors/transcoder.rb b/lib/paperclip/paperclip_processors/transcoder.rb
index d67efea..dd1c619 100755
--- a/lib/paperclip/paperclip_processors/transcoder.rb
+++ b/lib/paperclip/paperclip_processors/transcoder.rb
@@ -18,6 +18,7 @@ def initialize file, options = {}, attachment = nil
       @convert_options  = set_convert_options(options)
 
       @format           = options[:format]
+      @width            = options[:width]
 
       @geometry         = options[:geometry]
       unless @geometry.nil?
@@ -36,6 +37,13 @@ def initialize file, options = {}, attachment = nil
 
       @convert_options[:output][:s] = format_geometry(@geometry) if @geometry.present?
 
+      # add support for cropping the video if model supports it
+      target = attachment.instance
+      if target.respond_to?(:cropping?) && target.cropping?
+        crop_option = "crop=#{round_even(target.crop_w)}:#{round_even(target.crop_h)}:#{round_even(target.crop_x)}:#{round_even(target.crop_y)}"
+        @convert_options[:output]["filter:v"] = crop_option
+      end
+
       attachment.instance_write(:meta, @meta) if attachment
     end
 
@@ -67,7 +75,17 @@ def make
           end
           if @convert_options[:output]
             @convert_options[:output].each do |h|
-              @cli.add_output_param h
+              if h[0] == :vf
+                if @meta[:width] < @width
+                  #modify the scale on smaller images to ensure it's divisible
+                  #by two
+                  h[1] = "\"scale=trunc(iw/2)*2:trunc(ih/2)*2\""
+                end
+
+                @cli.add_output_param h
+              else
+                @cli.add_output_param h
+              end
             end
           end
         end
@@ -105,6 +123,13 @@ def format_geometry geometry
     def output_is_image?
       !!@format.to_s.match(/jpe?g|png|gif$/)
     end
+
+    def round_even(num)
+      num = num.to_i
+      return 0 if num.zero?
+
+      (num / 2).round(0) * 2
+    end
   end
 
   class Attachment
diff --git a/paperclip-av-transcoder.gemspec b/paperclip-av-transcoder.gemspec
index c62aa5c..0c940f8 100644
--- a/paperclip-av-transcoder.gemspec
+++ b/paperclip-av-transcoder.gemspec
@@ -25,6 +25,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "sqlite3"
   spec.add_development_dependency "coveralls"
 
-  spec.add_dependency "paperclip", ">=2.5.2"
+  spec.add_dependency "kt-paperclip", ">=2.5.2"
   spec.add_dependency "av", "~> 0.9.0"
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 1735ebf..cff04ba 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -34,11 +34,13 @@ class Document < ActiveRecord::Base
     styles: {
       small: {
         format: 'ogv',
+        width: 320,
         convert_options: {
           output: {
             ab: '256k',
             ar: 44100,
-            ac: 2
+            ac: 2,
+            vf: "scale=320:-2"
           }
         }
       },
@@ -61,4 +63,4 @@ class Document < ActiveRecord::Base
 
   do_not_validate_attachment_file_type :video
   do_not_validate_attachment_file_type :image
-end
\ No newline at end of file
+end