diff --git a/kitti2bag/__init__.py b/kitti2bag/__init__.py
index b74ab79..8c8c493 100755
--- a/kitti2bag/__init__.py
+++ b/kitti2bag/__init__.py
@@ -231,27 +231,36 @@ def save_gps_vel_data(bag, kitti, gps_frame_id, topic):
 
 
 @click.group()
+@click.help_option('-h', '--help')
 def cli():
     """Convert KITTI dataset to ROS bag file the easy way!"""
     pass
 
 
+def common_options(function):
+    @click.option("-i", "--input-dir", required=False, default='.', show_default=True,
+                  type=click.Path(exists=True, dir_okay=True, file_okay=False),
+                  help="base directory of the dataset")
+    @click.option("-o", "--output-dir", required=False, default='.', show_default=True,
+                  type=click.Path(exists=True, dir_okay=True, file_okay=False),
+                  help="output directory for the created bag file")
+    @click.option("--compression", required=False,
+                  type=click.Choice(compression_choices),
+                  default=rosbag.Compression.NONE, show_default=True,
+                  help="which compression to use for the created bag")
+    @click.help_option('-h', '--help')
+    def tmp(*args, **kwargs):
+        function(*args, **kwargs)
+
+    return tmp
+
+
 @cli.command('raw')
 @click.option("-t", "--date", required=True, metavar='DATE',
               help="date of the raw dataset (i.e. 2011_09_26)")
 @click.option("-r", "--drive", required=True, type=int,
               help="drive number of the raw dataset (i.e. 1)")
-@click.option("-i", "--input-dir", required=False, default='.', show_default=True,
-              type=click.Path(exists=True, dir_okay=True, file_okay=False),
-              help="base directory of the dataset")
-@click.option("-o", "--output-dir", required=False, default='.', show_default=True,
-              type=click.Path(exists=True, dir_okay=True, file_okay=False),
-              help="output directory for the created bag file")
-@click.option("--compression", required=False,
-              type=click.Choice(compression_choices),
-              default=rosbag.Compression.NONE, show_default=True,
-              help="which compression to use for the created bag")
-@click.help_option('-h', '--help')
+@common_options
 def convert_raw(date, drive, input_dir='.', output_dir='.', compression=rosbag.Compression.NONE):
     """Convert a raw synced+rectified KITTI dataset to a bag"""
     drive = str(drive).zfill(4)
@@ -293,17 +302,7 @@ def convert_raw(date, drive, input_dir='.', output_dir='.', compression=rosbag.C
               help="sequence number")
 @click.option("-c", "--color", type=click.Choice(['gray', 'color', 'all']), required=True,
               help="which camera images to include in the bag")
-@click.option("-i", "--input-dir", required=False, default='.', show_default=True,
-              type=click.Path(exists=True, dir_okay=True, file_okay=False),
-              help="base directory of the dataset")
-@click.option("-o", "--output-dir", required=False, default='.', show_default=True,
-              type=click.Path(exists=True, dir_okay=True, file_okay=False),
-              help="output directory for the created bag file")
-@click.option("--compression", required=False,
-              type=click.Choice(compression_choices),
-              default=rosbag.Compression.NONE, show_default=True,
-              help="which compression to use for the created bag")
-@click.help_option('-h', '--help')
+@common_options
 def convert_odom(sequence, color, input_dir='.', output_dir='.', compression=rosbag.Compression.NONE):
     """Convert an odometry KITTI dataset to a bag"""
     sequence_str = str(sequence).zfill(2)