fix(gui): 简化GIF生成错误处理逻辑，直接解码错误输出

This reverts commit 302dbc805f49d1403923369e7f31283309abd973.

.gitignore

@@ -1 +1,2 @@
 __pycache__/gui.cpython-311.pyc
+ffmpeg/ffmpeg.exe

gui.py

@@ -140,22 +140,6 @@ class VideoToGifConverter:
         self.duration_entry.pack(side="left", padx=5)
         ttk.Label(duration_frame, text="(留空表示全部)").pack(side="left", padx=5)
 
-        # 质量设置
-        quality_frame = ttk.Frame(self.settings_frame)
-        quality_frame.pack(fill="x", padx=5, pady=5)
-
-        ttk.Label(quality_frame, text="质量设置:").pack(side="left", padx=5)
-        self.quality_var = tk.StringVar(value="medium")
-        ttk.Radiobutton(
-            quality_frame, text="高质量", variable=self.quality_var, value="high"
-        ).pack(side="left", padx=5)
-        ttk.Radiobutton(
-            quality_frame, text="中等", variable=self.quality_var, value="medium"
-        ).pack(side="left", padx=5)
-        ttk.Radiobutton(
-            quality_frame, text="低质量", variable=self.quality_var, value="low"
-        ).pack(side="left", padx=5)
-
         # 输出设置
         output_frame = ttk.Frame(self.settings_frame)
         output_frame.pack(fill="x", padx=5, pady=5)
@@ -220,16 +204,6 @@ class VideoToGifConverter:
         for file in files:
             self.files_list.insert(tk.END, file)
 
-    def get_quality_settings(self):
-        """根据质量设置返回 FFmpeg 调色板生成参数"""
-        quality = self.quality_var.get()
-        if quality == "high":
-            return "stats_mode=full"
-        elif quality == "medium":
-            return "stats_mode=diff"
-        else:
-            return "stats_mode=diff:dither=bayer:bayer_scale=2"
-
     def validate_inputs(self):
         """验证输入参数"""
         try:
@@ -329,13 +303,8 @@ class VideoToGifConverter:
             if duration:
                 palette_cmd.extend(["-t", str(float(duration))])
 
-            # 获取质量设置
-            quality_setting = self.get_quality_settings()
-
-            # 修改调色板生成命令中的滤镜
-            palette_cmd.extend(
-                ["-vf", f"{filter_complex},palettegen={quality_setting}", palette_path]
-            )
+            # 添加滤镜和输出
+            palette_cmd.extend(["-vf", f"{filter_complex},palettegen", palette_path])
 
             # 打印命令用于调试
             print("调色板生成命令:", " ".join(palette_cmd))
@@ -381,13 +350,12 @@ class VideoToGifConverter:
             if duration:
                 gif_cmd.extend(["-t", str(float(duration))])
 
-            # 修改 GIF 生成命令中的滤镜
             gif_cmd.extend(
                 [
                     "-i",
                     palette_path,
                     "-lavfi",
-                    f"{filter_complex} [x]; [x][1:v] paletteuse=dither=bayer:bayer_scale=2",
+                    f"{filter_complex} [x]; [x][1:v] paletteuse",
                     output_path,
                 ]
             )