只输出关键信息，方便程序处理

quick_split_video.py

@@ -43,8 +43,8 @@ if __name__ == '__main__':
         print("CUR_DT", current_dt)
         print("BIAS_T", current_sec)
         split_process = subprocess.Popen([
-            "ffmpeg", "-y", "-i", input_file,
-            "-c", "copy", "-f", "mp4",
+            "ffmpeg", "-y", "-hide_banner", "-progress", "-", "-v", "0",
+            "-i", input_file, "-c", "copy", "-f", "mp4",
             "-t", str(EACH_SEC + OVERFLOW_SEC),
             "-ss", str(current_sec),
             "{}.mp4".format(current_dt)