lib/hydra/derivatives/ffmpeg.rb in hydra-derivatives-0.0.1 vs lib/hydra/derivatives/ffmpeg.rb in hydra-derivatives-0.0.2

@@ -12,12 +12,14 @@
         extend Open3
       end
 
       def process
         directives.each do |name, args| 
-          raise ArgumentError, "You must provide the :format you want to transcode into. You provided #{args}" unless args[:format]
+          format = args[:format]
+          raise ArgumentError, "You must provide the :format you want to transcode into. You provided #{args}" unless format
           # TODO if the source is in the correct format, we could just copy it and skip transcoding.
-          encode_datastream(output_datastream_id(name), args[:format], new_mime_type(args[:format]), options_for(args[:format]))
+          output_datastream_name = args[:datastream] || output_datastream_id(name)
+          encode_datastream(output_datastream_name, format, new_mime_type(format), options_for(format))
         end
       end
 
       def encode_datastream(dest_dsid, file_suffix, mime_type, options = '')
         out_file = nil