Update join return path

join.py

@@ -5,5 +5,5 @@ def join_artifacts():
     audio_in = ffmpeg.input('audio_out.mp3')
     video_in = ffmpeg.input('video_out.mp4')
     ffmpeg.concat(video_in.filter("subtitles", "audio_out.srt"), audio_in, v=1, a=1).output('av_out.mp4').run()
-    av_path = os.path.join(os.path.dirname(__file__), "av_out.mp4")
+    av_path = os.path.join(os.getcwd(), "av_out.mp4")
     return av_path