feat: update README files to clarify translation capabilities and optimize for Japanese

README.md

@@ -9,8 +9,9 @@
 </p>
 
 # What is Caption Trans?
-Import videos, extract subtitles, and use AI to translate them into the target language.
-Supports: Google Gemini (tested), OpenAI, DeepSeek, Ollama, and other OpenAI-compatible API services.
+Use AI large language models to translate video subtitles. **Especially optimized for Japanese.**
+
+Supports: Google Gemini, OpenAI, DeepSeek, and other OpenAI-compatible API services.
 
 # Download
 Supports macOS (Apple Silicon) and Windows.
@@ -18,22 +19,19 @@ Supports macOS (Apple Silicon) and Windows.
 Please go to [Releases](https://github.com/cddqssc/Caption-Trans/releases) to download.
 
 ## ⚠️ How to open on macOS
-1. Double-click the app. It will be blocked by the system because it has not been signed with an Apple developer certificate.
+1. Double-click the app. Since it is not currently signed with an Apple developer certificate, it will be blocked by the system.
 2. Go to **System Settings** > **Privacy & Security**.
-3. Scroll down to the Security section and click **"Open Anyway"** next to the app's block message.
-4. Enter your Mac password and click **"Open"**. 
-*(You only need to do this once.)*
+3. Scroll down and find the blocked app notice in the Security section, then click **"Open Anyway"**.
+4. After verifying your Mac password, click **"Open"** in the final popup.
+*(You only need to do this once. After that, you can open it normally by double-clicking.)*
 
-# App Screenshot
+# App Screenshots
 <img src="screenshots/screenshot_en.jpg" alt="App Screenshot" width="500">
 
-# Tips
-I have currently tested the Gemini API, Qwen, and SiliconFlow, and I recommend using **gemini-2.5-flash-lite**.
+# Notes
+Transcription is especially optimized for Japanese, and GPU acceleration is supported on both Windows and macOS.
 
-It balances speed and quality, and the price is relatively low. It can also translate sensitive content.
-
-For models above Gemini 3, translating sensitive content may return an empty result, and the price is higher.
+For translation, I recommend the **gemini flash lite** model. In practice, it is very fast, delivers solid quality, and is relatively affordable. It can also translate some sensitive content.
 
 # License
 [MIT License](LICENSE)
-

README_zh.md

@@ -9,8 +9,9 @@
 </p>
 
 # 什么是 Caption Trans？
-导入视频，提取视频字幕，使用 AI 翻译字幕为目标语言。
-支持：Google Gemini（已测试）、OpenAI、DeepSeek、Ollama 等兼容 OpenAI 的 API 服务。
+使用 AI 大模型翻译视频字幕。**特别为日语优化。**
+
+支持：Google Gemini、OpenAI、DeepSeek、等兼容 OpenAI 的 API 服务。
 
 # 下载
 支持 macOS（M系列芯片）和 Windows。
@@ -28,11 +29,9 @@
 <img src="screenshots/screenshot_zh.jpg" alt="应用截图" width="500">
 
 # 使用心得
-目前测试了 gemini api, Qwen, SiliconFlow，推荐使用**gemini-2.5-flash-lite**。
+转录为日语特别优化，在 windows和 macOS 均支持 GPU 加速。
 
-它能兼顾速度和质量，价格也比较便宜。并且能翻译敏感内容。
-
-gemini-3 以上的模型，翻译敏感内容会返回空，价格也比较贵。
+翻译推荐使用**gemini flash lite**模型，实测翻译速度非常快和质量也很不错，价格也比较便宜。并且能翻译一些敏感内容。
 
 # 开源协议
 [MIT License](LICENSE)