add controller for video

Web/Azaion.Web/Azaion.Video/VideoManager.cs

@@ -1,5 +1,7 @@
+using System.Diagnostics;
 using Azaion.Repository;
 using Azaion.Repository.DTO;
+using Azaion.Repository.Entities;
 
 namespace Azaion.Video;
 
@@ -18,12 +20,36 @@ public class VideoManager(IDbFactory dbFactory) : IVideoManager
             })
             .ToList());
     }
-
-    public void OpenVideo(Guid mediaId)
+    
+    public void EncodeVideo(Guid mediaId)
     {
-        throw new NotImplementedException();
+        var media = dbFactory.Run(db => db.Medias.SingleOrDefault(x => x.Id == mediaId))!;
+        
+        string arguments = string.Concat($"-i \"{media.Path}\" ",
+                           "-f hls ",
+                           "-hls_time 2 ",
+                           "-hls_playlist_type vod ",
+                           "-hls_flags independent_segments ",
+                           "-hls_segment_type mpegts ", 
+                           $"-hls_segment_filename \"{media.SegmentFile}\"",
+                           $"\"{media.M3U8File}\"");
+        
+        var process = new Process
+        {
+            StartInfo = new()
+            {
+                FileName = Constants.FFMPEG_FILE,
+                Arguments = arguments,
+                UseShellExecute = true,
+            },
+            EnableRaisingEvents = true,
+        };
+        process.Start();
     }
 
+    public Media Get(Guid mediaId) => 
+        dbFactory.Run(db => db.Medias.SingleOrDefault(x => x.Id == mediaId))!;
+
     public void OpenTestVideo()
     {
         
@@ -31,6 +57,5 @@ public class VideoManager(IDbFactory dbFactory) : IVideoManager
     
     public void FinishAnnotation(Guid mediaId)
     {
-        throw new NotImplementedException();
     }
 }