diff --git a/src/server/distrenjob.h b/src/server/distrenjob.h
--- a/src/server/distrenjob.h
+++ b/src/server/distrenjob.h
@@ -45,6 +45,7 @@ struct distrenjob {
   int total_frames; // how many frames are in the animation for stats/etc (unassigned frames)
   time_t avg_render_time; // average seconds it took to render a frame
   time_t time_remaining; /*< estimated seconds remaining till render is complete (up to 49, 710 days) */
+  char *output_format; /*< currently is the file extention of the request output format. @todo make this mime-type based/not a string */
   struct frameset *frameset;
 };