diff --git a/rewind/core.py b/rewind/core.py
index 05a0f49..b4db417 100644
--- a/rewind/core.py
+++ b/rewind/core.py
@@ -45,7 +45,7 @@ def concat_ts_files(file_list: list[str], start_offset: float, end_offset: float
     if start_offset > 0:
         cmd += ["-ss", str(start_offset)]
     if end_offset > 0:
-        cmd += ["-sseof", str(length)]
+        cmd += ["-t", str(length)]
     cmd += ["-f", "concat", "-safe", "0", "-i", "file_list.txt", "-c", "copy"]
     cmd.append(output_file)
 
diff --git a/rewind/daemon.py b/rewind/daemon.py
index 3c21256..882d3b1 100755
--- a/rewind/daemon.py
+++ b/rewind/daemon.py
@@ -11,7 +11,6 @@ from watchdog.observers import Observer
 from watchdog.events import FileSystemEventHandler
 
 INTERVAL = 10
-MAX_AGE_SECONDS = 60 * 60 * 1
 running = True
 
 def open_obs():