diff --git a/docker-compose/config.yml.example b/docker-compose/config.yml.example
index 01bc78f..6ea355e 100644
--- a/docker-compose/config.yml.example
+++ b/docker-compose/config.yml.example
@@ -15,7 +15,8 @@ log:
   level: DEBUG
 recording:
   basepath: "/recorded"
-  contentpathtemplate: "{{.Program.Name | fold}}-{{.Program.StartTime.Format \"20060102-1504\"}}-{{.Service.Name | fold}}.m2ts"
+  contentpathtemplate: |
+    {{.Title}}{{if ne .Episode -1}} #{{.Episode}}{{end}}{{if ne .Subtitle ""}}「{{.Subtitle}}」{{end}}-{{.Program.StartTime.Format "20060102-1504"}}-{{.Service.Name}}.m2ts
 encoding:
   enabled: true
   basepath: "/encoded"
diff --git a/gpt/gpt_client.go b/gpt/gpt_client.go
index ca3e84f..06fabdc 100644
--- a/gpt/gpt_client.go
+++ b/gpt/gpt_client.go
@@ -10,7 +10,7 @@ import (
 )
 
 const systemPrompt = `Parse user message and output with this format:
-{"title": title name of the program, "subtitle": subtitle name of the program including the part used to extract the number of episodes, excluding flags such as "[新]", "[再]", etc., empty if it does not exist, "episode": number of episodes extracted from Arabic or Chinese numerals in numeric type, 0 if not present}
+{"title": title name of the program, "subtitle": subtitle name of the program including the part used to extract the number of episodes, excluding flags such as "[新]", "[再]", etc., empty if it does not exist, "episode": number of episodes extracted from Arabic or Chinese numerals in numeric type, -1 if not present}
 Please return in strict JSON format. Never include non-JSON content in the output, such as commentary.`
 
 const transcribeInitialPrompt = `そうだ。今日はピクニックしない？天気もいいし、絶好のピクニック日和だと思う。いいですね。