diff --git a/edgetpuvision/apps.py b/edgetpuvision/apps.py
index aacfcfc..918ed74 100644
--- a/edgetpuvision/apps.py
+++ b/edgetpuvision/apps.py
@@ -16,7 +16,7 @@
     parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
     parser.add_argument('--source',
                         help='/dev/videoN:FMT:WxH:N/D or .mp4 file or image file',
-                        default='/dev/video0:YUY2:1280x720:30/1')
+                        default='/dev/video0:YUY2:640x480:30/1')
     parser.add_argument('--bitrate', type=int, default=1000000,
                         help='Video streaming bitrate (bit/s)')