Update app.py

app.py

@@ -251,7 +251,7 @@ def add_transcript_voiceover(video_path, translated_json, output_path, add_voice
                 font=font_path, 
                 method='caption', 
                 color='yellow', 
-                fontsize=subtitle_font_size,  
+                font_size=subtitle_font_size,  
                 size=(max_subtitle_width, None)  
             ).with_start(entry["start"]).with_duration(entry["end"] - entry["start"]).with_position(('bottom')).with_opacity(0.7)
             text_clips.append(txt_clip)