Fix playback

lazy_player/__init__.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import os
+import sys
 from pathlib import Path
 from typing import Any, cast
 
@@ -53,11 +54,14 @@ class MainWindow(Gtk.ApplicationWindow):
 
         # Setup GStreamer pipeline
         self.pipeline = Gst.Pipeline.new("video-player")
-        playbin = Gst.ElementFactory.make("playbin", "playbin")
-        video_sink = Gst.ElementFactory.make("gtk4paintablesink", "gtk4paintablesink")
 
-        if not playbin or not video_sink:
+        playbin = Gst.ElementFactory.make("playbin", "playbin")
-            raise RuntimeError("Required GStreamer elements could not be created")
+        if not playbin:
+            raise RuntimeError("Failed to create playbin element")
+
+        video_sink = Gst.ElementFactory.make("gtk4paintablesink", "gtk4paintablesink")
+        if not video_sink:
+            raise RuntimeError("Failed to create gtk4paintablesink element")
 
         playbin.set_property("video-sink", video_sink)
         self.pipeline.add(playbin)
@@ -235,5 +239,8 @@ class App(Gtk.Application):
 
 
 def main():
+    if len(sys.argv) >= 2:
+        os.chdir(sys.argv[1])
+
     app = App()
     app.run(None)