From 332648d29e04afb094fd7f82f2d7d8f760d560c6 Mon Sep 17 00:00:00 2001
From: imeepos <imeepos@sker.com>
Date: Mon, 11 Aug 2025 13:09:56 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E5=85=B3=E9=94=AE?=
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- 修复 jpeg_quality_to_qscale 函数中的 u8 乘法溢出问题
- 将计算过程转换为 u32 类型以避免溢出
- 解决了导致线程 panic 和前端界面卡住的问题
---
 apps/desktop/src-tauri/src/infrastructure/frame_extractor.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/apps/desktop/src-tauri/src/infrastructure/frame_extractor.rs b/apps/desktop/src-tauri/src/infrastructure/frame_extractor.rs
index a1dd2a6..ab88e41 100644
--- a/apps/desktop/src-tauri/src/infrastructure/frame_extractor.rs
+++ b/apps/desktop/src-tauri/src/infrastructure/frame_extractor.rs
@@ -527,8 +527,8 @@ impl FrameExtractorService {
     fn jpeg_quality_to_qscale(quality: u8) -> u8 {
         // FFmpeg qscale: 1 (最高质量) 到 31 (最低质量)
         // 质量值: 1-100
-        let clamped_quality = quality.clamp(1, 100);
-        31 - ((clamped_quality - 1) * 30 / 99)
+        let clamped_quality = quality.clamp(1, 100) as u32;
+        (31 - ((clamped_quality - 1) * 30 / 99)) as u8
     }
 
     /// 计算提取时间点