diff --git a/common/common/segments.py b/common/common/segments.py
index 341b5f1..a7ad4f9 100644
--- a/common/common/segments.py
+++ b/common/common/segments.py
@@ -231,7 +231,7 @@ def best_segments_by_start(hour):
 	Note this means this function may perform os.stat()s.
 	"""
 	try:
-		segment_paths = os.listdir(hour)
+		segment_paths = [path for path in os.listdir(hour) if path.endswith('.ts')]
 	except OSError as e:
 		if e.errno != errno.ENOENT:
 			raise
@@ -313,7 +313,8 @@ def ffmpeg_cut_segment(segment, cut_start=None, cut_end=None):
 	args += ['-f', 'mpegts', '-']
 	# run it
 	logging.info("Running segment cut with args: {}".format(" ".join(args)))
-	return subprocess.Popen(args, stdout=subprocess.PIPE)
+	p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
+	return p
 
 
 def ffmpeg_cut_stdin(output_file, cut_start, duration, encode_args):
diff --git a/cut_races.py b/cut_races.py
index 1cce0ad..2664521 100644
--- a/cut_races.py
+++ b/cut_races.py
@@ -17,18 +17,23 @@ race_runs contains time for each racer
 
 """
 
+import datetime
+import logging
+import os
+import sys
 from getpass import getpass
 
 import argh
 import mysql.connector
 
+from common.segments import get_best_segments, cut_segments
 
 INFO_QUERY = """
 	SELECT
 		match_info.racer_1_name as racer_1,
 		match_info.racer_2_name as racer_2,
 		match_info.cawmentator_name as cawmentator,
-		match_info.match_id as match_id
+		match_info.match_id as match_id,
 		match_races.race_number as race_number,
 		races.timestamp as start,
 		race_runs.time as duration
@@ -40,10 +45,32 @@ INFO_QUERY = """
 """
 
 
-def cut_to_file()
+def ts(dt):
+	return dt.strftime("%FT%T")
 
 
-def main(host='condor.host', user='necrobot-read', password=None, database='season_8'):
+class NoSegments(Exception):
+	pass
+
+
+def cut_to_file(filename, base_dir, stream, start, end, variant='source'):
+	logging.info("Cutting {}".format(filename))
+	segments = get_best_segments(
+		os.path.join(base_dir, stream, variant).lower(),
+		start, end,
+	)
+	if None in segments:
+		logging.warning("Cutting {} ({} to {}) but it contains holes".format(filename, ts(start), ts(end)))
+	if not segments or set(segments) == {None}:
+		raise NoSegments("Can't cut {} ({} to {}): No segments".format(filename, ts(start), ts(end)))
+	with open(filename, 'w') as f:
+		for chunk in cut_segments(segments, start, end):
+			f.write(chunk)
+
+
+def main(host='condor.host', user='necrobot-read', password=None, database='season_8', base_dir='.', output_dir='.'):
+	logging.basicConfig(level=logging.INFO)
+
 	if password is None:
 		password = getpass("Password? ")
 	conn = mysql.connector.connect(
@@ -54,11 +81,32 @@ def main(host='condor.host', user='necrobot-read', password=None, database='seas
 	cur.execute(INFO_QUERY)
 
 	data = cur.fetchall()
+	data = [
+		[item.encode('utf-8') if isinstance(item, unicode) else item for item in row]
+		for row in data
+	]
+
+	logging.info("Got info on {} races".format(len(data)))
 
 	for racer1, racer2, cawmentator, match_id, race_number, start, duration in data:
 		end = start + datetime.timedelta(seconds=duration/100.)
-		name = "-".join([racer1, racer2, match_id, race_number])
-
+		base_name = "-".join(map(str, [racer1, racer2, match_id, race_number]))
+
+		items = [(racer1, racer1), (racer2, racer2)]
+		if cawmentator:
+			items.append(("cawmentary", cawmentator))
+		for name, stream in items:
+			try:
+				cut_to_file(
+					os.path.join(output_dir, "{}-{}.ts".format(base_name, name)),
+					base_dir, stream, start, end,
+				)
+			except NoSegments as e:
+				logging.warning(e)
+			except Exception as e:
+				logging.exception("Failed to cut {}-{}.ts ({} to {})".format(
+					base_name, name, ts(start), ts(end),
+				), exc_info=True)
 
 
 if __name__ == '__main__':