Update app.py

app.py

@@ -342,7 +342,12 @@ def update_translations(file, edited_table, mode):
 def create_subtitle_clip_pil(text, start_time, end_time, video_width, video_height, font_path):
     try:
         subtitle_width = int(video_width * 0.8)
-        subtitle_font_size = int(video_height // 20)
+        aspect_ratio = video_height / video_width
+        if aspect_ratio > 1.2:  # Portrait video
+            subtitle_font_size = int(video_width // 18)
+        else:  # Landscape video
+            subtitle_font_size = int(video_height // 20)
+
         font = ImageFont.truetype(font_path, subtitle_font_size)
 
         dummy_img = Image.new("RGBA", (subtitle_width, 1), (0, 0, 0, 0))