diff --git a/generate_map_timelapse.py b/generate_map_timelapse.py
index 74abed0..0f0599c 100644
--- a/generate_map_timelapse.py
+++ b/generate_map_timelapse.py
@@ -10,7 +10,7 @@ from PIL import Image, ImageFont, ImageDraw, ImageFont
 import io
 
 
-def generate_map_timelapse(token_id, token_secret):
+def generate_map_timelapse(token_id, token_secret, filename):
     print("Getting viewings")
     viewings = VCinemaUtils.get_vcinema_viewings(token_id, token_secret, combine_repeat_viewings=False)
 
@@ -25,7 +25,7 @@ def generate_map_timelapse(token_id, token_secret):
     running_country_counts = {}
     print(len(date_viewings.keys()))
 
-    with imageio.get_writer('test.gif', mode='I', duration=0.1) as writer:
+    with imageio.get_writer(filename, mode='I', duration=0.1) as writer:
         for date, viewings in date_viewings.items():
             date_viewings_countries = VCinemaUtils.filter_viewings(viewings, "countries")
 
@@ -52,16 +52,17 @@ def generate_map_timelapse(token_id, token_secret):
 
     print("optimizing")
 
-    optimize("test.gif")
+    optimize(filename)
 
     print("done")
 
 
 if __name__ == '__main__':
-    parser = argparse.ArgumentParser(description='Update wiki pages.')
+    parser = argparse.ArgumentParser(description='Create timelapse gif of vcinema countries')
     parser.add_argument('token_id', help='API token ID.')
     parser.add_argument('token_secret', help='API token secret.')
+    parser.add_argument('filename', help='Name of output gif')
 
     args = parser.parse_args()
 
-    generate_map_timelapse(args.token_id, args.token_secret)
+    generate_map_timelapse(args.token_id, args.token_secret, args.filename)