把水印文本替换空文本时，如果出现空字幕的时间轴，移除空字幕时间轴

backend/main.py

@@ -185,6 +185,10 @@ def run(self):
             self.generate_subtitle_file()
         if config.WORD_SEGMENTATION:
             reformat.execute(os.path.join(os.path.splitext(self.video_path)[0] + '.srt'), config.REC_CHAR_TYPE)
+            # 去除空字幕的时间轴
+            if config.DELETE_EMPTY_TIMESTAMP:
+                reformat.remove_empty_timestamp(os.path.join(os.path.splitext(self.video_path)[0] + '.srt'))
+
         print(config.interface_config['Main']['FinishGenerateSub'], f"{round(time.time() - start_time, 2)}s")
         self.update_progress(ocr=100, frame_extract=100)
         self.isFinished = True

backend/tools/reformat.py

@@ -146,6 +146,19 @@ def remove_invalid_segment(seg, text):
         sub.text = ss.strip()
     subs.save(path, encoding='utf-8')
 
+# remove_empty_timestamp 去除空字幕的时间轴
+def remove_empty_timestamp(path):
+    subs = pysrt.open(path)
+    # 过滤掉空字幕
+    non_empty_subs = [sub for sub in subs if sub.text.strip()]
+
+    # 重新编号
+    for i, sub in enumerate(non_empty_subs, start=1):
+        sub.index = i
+
+    # 保存更新后的字幕文件
+    pysrt.SubRipFile(items=non_empty_subs).save(path, encoding='utf-8')
+
 
 if __name__ == '__main__':
     path = "/home/yao/Videos/null.srt"