Add FFmpeg Downloader

Flashcap-Demo/FFmpeg.cs

@@ -0,0 +1,27 @@
+using Xabe.FFmpeg;
+using Xabe.FFmpeg.Downloader;
+
+namespace Flashcap_Demo;
+
+public class FFmpeg
+{
+    public static Task DownloadBackground()
+    {
+        return FFmpegDownloader.GetLatestVersion(FFmpegVersion.Official, new Progress<ProgressInfo>(info =>
+                {
+                    if (info.TotalBytes<=1)return;
+                    var percentageDone = (double)info.DownloadedBytes / info.TotalBytes;
+                    Console.Write($"Downloaded {FormatBytes(info.DownloadedBytes)} of {FormatBytes(info.TotalBytes)},  {FormatPercentage(percentageDone)}\r");
+                }));
+    }
+
+    private static string FormatBytes(long bytes)
+    {
+        return $"{bytes / 1000000.0d:#00.00}MB";
+    }
+    private static string FormatPercentage(double percentage)
+    {
+        return $"{percentage*100:00.00}%";
+    }
+    
+}

Flashcap-Demo/Flashcap-Demo.csproj

@@ -9,9 +9,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="FlashCap" Version="1.11.0" />
+      <PackageReference Include="Xabe.FFmpeg.Downloader" Version="6.0.2" />
-      <PackageReference Include="SixLabors.ImageSharp" Version="3.1.12" />
-      <PackageReference Include="System.Reactive" Version="6.1.0" />
     </ItemGroup>
 
 </Project>

Flashcap-Demo/Program.cs

@@ -5,8 +5,9 @@ namespace Flashcap_Demo;
 
 internal static class Program
 {
-    public static void Main(string[] args)
+    public static async Task Main(string[] args)
     {
+        var backgroundDownload = FFmpeg.DownloadBackground();
         var device = new CaptureDevices();
         var deviceDescriptors = device.GetDescriptors()
             .Where(x=>x.Characteristics.Length > 0)
@@ -20,6 +21,13 @@ internal static class Program
         Console.WriteLine($"Chosen:\n\t" +
                           $"{captureDeviceDescriptor}\n\t" +
                           $"{characteristic}");
+        if (!backgroundDownload.IsCompleted)
+        {
+            await backgroundDownload;
+        }
+
+        Console.WriteLine("We have both a selected Device and FFmpeg");
+        
     }
     
 }