Update app.py

app.py

@@ -352,7 +352,7 @@ def create_subtitle_clips(subtitles, videosize, fontsize, font, color, debug):
         text_clip = TextClip(font, subtitle.text, font_size=fontsize, size=(int(video_width * 0.68), int(video_height * 0.2)) ,text_align="center" ,color=color, bg_color='black', method='caption').with_start(start_time).with_duration(duration)
         color_clip = ColorClip(size=(int(max_width), int(max_height)),
                        color=(0, 255, 255))
-        color_clip = color_clip.set_opacity(.6)
+        color_clip = color_clip.with_opacity(.6)
         subtitle_x_position = 'center'
         subtitle_y_position = video_height * 0.74
         text_position = (subtitle_x_position, subtitle_y_position)