Update app.py

app.py

@@ -190,7 +190,7 @@ def create_subtitle_clips(subtitles, videosize, fontsize, font, color, debug):
         subtitle_x_position = 'center'
         subtitle_y_position = video_height * 4 / 5
         text_position = (subtitle_x_position, subtitle_y_position)
-        subtitle_clips.append(text_clip.set_position(text_position))
+        subtitle_clips.append(text_clip.with_position(text_position))
     return subtitle_clips