Upload app.py

app.py

@@ -308,6 +308,7 @@ def create_video(project_dir, image_paths, caption_subtitle_file, speech_subtitl
             "ffmpeg", "-y",
             "-f", "concat", "-safe", "0", "-i", frames_list,
             "-i", audio_file,
+            "-vf", "zoompan=z='1.0+0.02*sin(2*PI*on/25/5)':d=1",  # 正弦波动缩放
             "-c:v", "libx264", "-pix_fmt", "yuv420p",
             "-c:a", "aac", "-strict", "experimental",
             "-vsync", "vfr",  # 确保视频帧率与时间轴匹配