diff --git a/buscribe-api/buscribeapi/main.py b/buscribe-api/buscribeapi/main.py
index 87568c2..f653763 100644
--- a/buscribe-api/buscribeapi/main.py
+++ b/buscribe-api/buscribeapi/main.py
@@ -37,7 +37,8 @@ def servelet(server):
     logging.info('Starting WSGI server.')
     server.serve_forever()
 
-
+@argh.arg('channel',
+          help="Twitch channel to transcribe.")
 @argh.arg('--host',
           help='Address or socket server will listen to. Default is 0.0.0.0 (everything on the local machine).')
 @argh.arg('--port',
@@ -49,7 +50,7 @@ def servelet(server):
           help='The start time in UTC for the event, for UTC-Bustime conversion')
 @argh.arg('--base-dir',
           help='Directory from which segments will be grabbed. Default is current working directory.')
-def main(database="", host='0.0.0.0', port=8010, bustime_start=None, base_dir=None):
+def main(channel, database="", host='0.0.0.0', port=8010, bustime_start=None, base_dir=None):
     if bustime_start is None:
         logging.error("Missing --bustime-start!")
         exit(1)
@@ -62,7 +63,7 @@ def main(database="", host='0.0.0.0', port=8010, bustime_start=None, base_dir=No
         logging.error("Invalid --bustime-start!")
         exit(1)
 
-    app.segments_dir = base_dir
+    app.segments_dir = os.path.join(base_dir, channel, "source")
 
     app.db_manager = DBManager(dsn=database)