diff --git a/config.py b/config.py
index 7a01e6f..dd77983 100644
--- a/config.py
+++ b/config.py
@@ -1,5 +1,9 @@
 import configparser
 import os.path
+from flask.helpers import get_env
+
+
+PROD_ENV = get_env() == "production"
 
 # [danmaku]
 # exec
diff --git a/controller/api/config_blueprint.py b/controller/api/config_blueprint.py
index 5fa4303..bb5d9ff 100644
--- a/controller/api/config_blueprint.py
+++ b/controller/api/config_blueprint.py
@@ -1,6 +1,6 @@
 from flask import Blueprint, jsonify, request
 
-from config import get_config, write_config, load_config
+from config import get_config, write_config, load_config, PROD_ENV
 
 blueprint = Blueprint("api_config", __name__, url_prefix="/api/config")
 
@@ -10,6 +10,13 @@ def get_global_config():
     return jsonify(get_config())
 
 
+@blueprint.get("/env")
+def get_current_env():
+    return jsonify({
+        "prod": PROD_ENV
+    })
+
+
 @blueprint.put("/")
 def modify_global_config():
     return jsonify(request.json)
diff --git a/workflow/video.py b/workflow/video.py
index e3efe4f..8715958 100644
--- a/workflow/video.py
+++ b/workflow/video.py
@@ -4,7 +4,7 @@ import subprocess
 from datetime import datetime, timedelta
 from typing import IO
 
-from config import FFMPEG_EXEC, VIDEO_BITRATE, FFMPEG_USE_GPU, VIDEO_CLIP_EACH_SEC, VIDEO_CLIP_OVERFLOW_SEC
+from config import FFMPEG_EXEC, VIDEO_BITRATE, FFMPEG_USE_GPU, VIDEO_CLIP_EACH_SEC, VIDEO_CLIP_OVERFLOW_SEC, PROD_ENV
 
 
 def get_video_real_duration(filename):
@@ -33,6 +33,7 @@ def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_fi
         new_filename
     ], stdout=subprocess.PIPE)
     handle_ffmpeg_output(encode_process.stdout)
+    return encode_process.wait()
 
 
 def handle_ffmpeg_output(stderr: IO[bytes]) -> None:
@@ -40,6 +41,9 @@ def handle_ffmpeg_output(stderr: IO[bytes]) -> None:
         line = stderr.readline()
         if line == b"":
             break
+        if PROD_ENV:
+            # 正式环境不要输出一大堆的东西了
+            continue
         if line.startswith(b"out_time="):
             cur_time = line.replace(b"out_time=", b"").decode()
             print("CurTime", cur_time.strip())