fix Windows build icon error

- comment out icon reference in FFmpeg_GUI_Windows.spec
- update BUILD_WINDOWS_NATIVE.md without icon requirement
- add WINDOWS_BUILD_FIX.md with solution for icon error
- build will now work without requiring icon.ico file

fixes: FileNotFoundError icon input file not found
Windows users can now build successfully with spec file

Author: mauriciomenon

BUILD_WINDOWS_NATIVE.md

@@ -61,10 +61,11 @@ pyinstaller --onefile --windowed --name=FFmpeg_GUI_Windows_AMD64 ^
     --hidden-import=ffmpeg ^
     --hidden-import=ssl ^
     --hidden-import=urllib3 ^
-    --icon=icon.ico ^
     GUI_pyqt6_WINFF.py
 ```
 
+**Note:** Icon line removed. To add custom icon, create `icon.ico` and add `--icon=icon.ico` to the command.
+
 ## Output
 - **Executable**: `dist\FFmpeg_GUI_Windows_AMD64.exe`
 - **Size**: ~40-60MB (native Windows)

WINDOWS_BUILD_FIX.md

@@ -0,0 +1,85 @@
+# Windows Build Fix
+
+## Issue: Icon File Not Found
+
+**Error:**
+```
+FileNotFoundError: Icon input file C:\Users\annye\git\ffmpeg-gui-pyqt6\icon.ico not found
+```
+
+## Solution
+
+The build fails because `icon.ico` is referenced in the spec file but doesn't exist in the repository.
+
+### Quick Fix (Updated Files)
+
+The repository has been updated with:
+
+1. **FFmpeg_GUI_Windows.spec** - Icon line commented out
+2. **BUILD_WINDOWS_NATIVE.md** - Updated build instructions without icon
+
+### Build Now (After Pulling Updates)
+
+```cmd
+git pull origin master
+.venv\Scripts\activate.bat
+pyinstaller FFmpeg_GUI_Windows.spec
+```
+
+### Alternative: Create Custom Icon
+
+If you want a custom icon:
+
+1. **Create icon file:**
+   - Find or create a `.ico` file (Windows icon format)
+   - Name it `icon.ico`
+   - Place in repository root directory
+
+2. **Edit spec file:**
+   ```python
+   # In FFmpeg_GUI_Windows.spec, uncomment:
+   icon='icon.ico'  # Add this file if available
+   ```
+
+3. **Build:**
+   ```cmd
+   pyinstaller FFmpeg_GUI_Windows.spec
+   ```
+
+### Build Without Icon (Current Default)
+
+The spec file now builds without requiring an icon:
+
+```cmd
+# This will work without icon.ico file
+.venv\Scripts\activate.bat
+pyinstaller FFmpeg_GUI_Windows.spec
+```
+
+Output: `dist\FFmpeg_GUI_Windows_AMD64.exe` (uses default PyInstaller icon)
+
+### Manual Command (No Spec File)
+
+Alternative command without spec file:
+
+```cmd
+.venv\Scripts\activate.bat
+pyinstaller --onefile --windowed --name=FFmpeg_GUI_Windows_AMD64 ^
+    --add-data="utils_safe_extract.py;." ^
+    --hidden-import=PyQt6.QtCore ^
+    --hidden-import=PyQt6.QtGui ^
+    --hidden-import=PyQt6.QtWidgets ^
+    --hidden-import=ffmpeg ^
+    --hidden-import=ssl ^
+    --hidden-import=urllib3 ^
+    GUI_pyqt6_WINFF.py
+```
+
+## Status
+
+**Fixed in repository:**
+- Spec file updated (icon commented out)
+- Build instructions updated
+- No icon file required for build
+
+**Pull the latest changes and the build should work.**