transcript_text = download_blob_to_string(gcs_client, bucket_name, transcript_blob_name)

app.py

@@ -438,13 +438,14 @@ def process_transcript_and_screenshots_on_gcs(video_id):
     if not exists:
         # 从YouTube获取逐字稿并上传
         transcript = get_transcript(video_id)
-        if transcript:
-            print("成功獲取字幕")
-        else:
-            print("沒有找到字幕")
         transcript_text = json.dumps(transcript, ensure_ascii=False, indent=2)
         upload_file_to_gcs_with_json_string(gcs_client, bucket_name, transcript_blob_name, transcript_text)
         print("逐字稿已上传到GCS")
+    else:
+        # 逐字稿已存在，下载逐字稿内容
+        print("逐字稿已存在于GCS中")
+        transcript_text = download_blob_to_string(gcs_client, bucket_name, transcript_blob_name)
+        transcript = json.loads(transcript_text)
 
     for entry in transcript:
         if 'img_file_id' not in entry: