Trying to guess FFmpeg process end

Author: ackava

FFMpeg.Xamarin/FFMpegLibrary.cs

@@ -216,6 +216,8 @@ await Task.Run(() =>
             }
         }
 
+        public static string EndOfFFMPEGLine = "final ratefactor:";
+
         private static int _Run(
             Context context,
             string cmd,
@@ -247,20 +249,41 @@ private static int _Run(
             process.Start();
 
 
-            Task.Run(() =>
+            Task.Run(async () =>
             {
-                using (var reader = process.StandardError)
+                try
                 {
-                    string processOutput = "";
-                    do
+                    using (var reader = process.StandardError)
                     {
-                        var line = reader.ReadLine();
-                        if (line == null)
-                            break;
-                        logger?.Invoke(line);
-                        processOutput += line;
-                    } while (!finished);
-                    error = processOutput;
+                        string processOutput = "";
+                        do
+                        {
+                            var line = reader.ReadLine();
+                            if (line == null)
+                                break;
+                            logger?.Invoke(line);
+                            processOutput += line;
+
+
+                            if (line.StartsWith(EndOfFFMPEGLine))
+                            {
+                                // we are assuming that process has finished.. we will exit forcefully
+                                // after 1 minute...
+                                await Task.Delay(TimeSpan.FromMinutes(1));
+
+                                System.Diagnostics.Debug.WriteLine("Forcing ffmpeg to exit..");
+
+                                process.Kill();
+                            }
+
+                        } while (!finished);
+                        error = processOutput;
+
+
+                    }
+                }
+                catch (Exception ex) {
+                    System.Diagnostics.Debug.WriteLine(ex);
                 }
             });
 

FFMpeg.Xamarin/Properties/AssemblyInfo.cs

@@ -26,5 +26,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.27.*")]
+[assembly: AssemblyVersion("1.0.28.*")]
 

nuget/Package.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>Xamarin.Android.FFmpeg</id>
-    <version>1.0.27</version>
+    <version>1.0.28</version>
     <title>FFmpeg binding for Xamarin Android</title>
     <authors>akash.kava</authors>
     <owners></owners>