问无法使用protonemedia / laravel-ffmpeg为上传的视频添加水印

EN

public function watermarkpost(Request $request)
{

    if ($file = $request->file('watermark')) 
    {      
       $name = time().str_replace(' ', '', $file->getClientOriginalName());
       $file->move('assets/images/products',$name);           
    }
        FFMpeg::open(asset('assets/images/products/'.$name))->addWatermark(function(WatermarkFactory $watermark) {
            $watermark
            ->open(asset('assets/images/1571567292logo.png') )
            ->right(25)
            ->bottom(25);
        });
   
    // return asset('assets/images/products/'.$name);
}

Alchemy\\BinaryDriver\\Exception\\ExecutableNotFoundException(code: 0): Executable not found, proposed : ffmpeg at F:\\xampp\\htdocs\\GeniusCart\\project\\vendor\\alchemy\\binary-driver\\src\\Alchemy\\BinaryDriver\\AbstractBinary.php:159)