.gitignore

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

gui.py

@@ -140,6 +140,22 @@ 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)
@@ -204,6 +220,16 @@ 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 "max_colors=256"
+        elif quality == "medium":
+            return "max_colors=128"
+        else:
+            return "max_colors=64"
+
     def validate_inputs(self):
         """验证输入参数"""
         try:
@@ -303,8 +329,13 @@ class VideoToGifConverter:
             if duration:
                 palette_cmd.extend(["-t", str(float(duration))])
 
-            # 添加滤镜和输出
-            palette_cmd.extend(["-vf", f"{filter_complex},palettegen", palette_path])
+            # 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]
+            )
 
             # 打印命令用于调试
             print("调色板生成命令:", " ".join(palette_cmd))
@@ -327,10 +358,13 @@ class VideoToGifConverter:
                     else 0
                 ),
             )
-            _, stderr = process.communicate()
+            stdout, stderr = process.communicate()
 
             if process.returncode != 0:
-                raise RuntimeError(f"调色板生成失败: {stderr.decode()}")
+                error_msg = stderr.decode()
+                print(f"调色板生成命令: {' '.join(palette_cmd)}")
+                print(f"错误输出: {error_msg}")
+                raise RuntimeError(f"调色板生成失败: {error_msg}")
 
             # 更新状态显示
             self.status_label.config(
@@ -350,12 +384,13 @@ 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",
+                    f"{filter_complex} [x]; [x][1:v] paletteuse=dither=bayer:bayer_scale=2",
                     output_path,
                 ]
             )