update ffmpeg path customization

MediaBrowser.Controller/MediaEncoding/IMediaEncoder.cs

@@ -19,12 +19,6 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <value>The encoder path.</value>
         string EncoderPath { get; }
 
-        /// <summary>
-        /// Gets the version.
-        /// </summary>
-        /// <value>The version.</value>
-        string Version { get; }
-
         /// <summary>
         /// Supportses the decoder.
         /// </summary>

MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs

@@ -66,8 +66,6 @@ namespace MediaBrowser.MediaEncoding.Encoder
 
         public string FFProbePath { get; private set; }
 
-        public string Version { get; private set; }
-
         protected readonly IServerConfigurationManager ConfigurationManager;
         protected readonly IFileSystem FileSystem;
         protected readonly ILiveTvManager LiveTvManager;
@@ -81,11 +79,10 @@ namespace MediaBrowser.MediaEncoding.Encoder
         private readonly List<ProcessWrapper> _runningProcesses = new List<ProcessWrapper>();
         private readonly bool _hasExternalEncoder;
 
-        public MediaEncoder(ILogger logger, IJsonSerializer jsonSerializer, string ffMpegPath, string ffProbePath, string version, IServerConfigurationManager configurationManager, IFileSystem fileSystem, ILiveTvManager liveTvManager, IIsoManager isoManager, ILibraryManager libraryManager, IChannelManager channelManager, ISessionManager sessionManager, Func<ISubtitleEncoder> subtitleEncoder, Func<IMediaSourceManager> mediaSourceManager)
+        public MediaEncoder(ILogger logger, IJsonSerializer jsonSerializer, string ffMpegPath, string ffProbePath, bool hasExternalEncoder, IServerConfigurationManager configurationManager, IFileSystem fileSystem, ILiveTvManager liveTvManager, IIsoManager isoManager, ILibraryManager libraryManager, IChannelManager channelManager, ISessionManager sessionManager, Func<ISubtitleEncoder> subtitleEncoder, Func<IMediaSourceManager> mediaSourceManager)
         {
             _logger = logger;
             _jsonSerializer = jsonSerializer;
-            Version = version;
             ConfigurationManager = configurationManager;
             FileSystem = fileSystem;
             LiveTvManager = liveTvManager;
@@ -98,24 +95,40 @@ namespace MediaBrowser.MediaEncoding.Encoder
             FFProbePath = ffProbePath;
             FFMpegPath = ffMpegPath;
 
-            _hasExternalEncoder = !string.IsNullOrWhiteSpace(ffMpegPath);
+            _hasExternalEncoder = hasExternalEncoder;
         }
 
         public void Init()
         {
             ConfigureEncoderPaths();
+
+            if (_hasExternalEncoder)
+            {
+                LogPaths();
+                return;
+            }
+
+            // If the path was passed in, save it into config now.
+            var encodingOptions = GetEncodingOptions();
+            var appPath = encodingOptions.EncoderAppPath;
+            if (!string.IsNullOrWhiteSpace(FFMpegPath) && !string.Equals(FFMpegPath, appPath, StringComparison.Ordinal))
+            {
+                encodingOptions.EncoderAppPath = FFMpegPath;
+                ConfigurationManager.SaveConfiguration("encoding", encodingOptions);
+            }
         }
 
         private void ConfigureEncoderPaths()
         {
             if (_hasExternalEncoder)
             {
-                LogPaths();
                 return;
             }
 
             var appPath = GetEncodingOptions().EncoderAppPath;
 
+            if (!string.IsNullOrWhiteSpace(appPath))
+            {
                 if (Directory.Exists(appPath))
                 {
                     SetPathsFromDirectory(appPath);
@@ -127,6 +140,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
 
                     SetProbePathFromEncoderPath(appPath);
                 }
+            }
 
             LogPaths();
         }

MediaBrowser.Server.Startup.Common/ApplicationHost.cs

@@ -650,13 +650,13 @@ namespace MediaBrowser.Server.Startup.Common
             var info = await new FFMpegLoader(Logger, ApplicationPaths, HttpClient, ZipClient, FileSystemManager, NativeApp.Environment, NativeApp.GetType().Assembly, NativeApp.GetFfmpegInstallInfo())
                 .GetFFMpegInfo(NativeApp.Environment, _startupOptions, progress).ConfigureAwait(false);
 
-            _hasExternalEncoder = !string.IsNullOrWhiteSpace(info.EncoderPath);
+            _hasExternalEncoder = string.Equals(info.Version, "custom", StringComparison.OrdinalIgnoreCase);
 
             var mediaEncoder = new MediaEncoder(LogManager.GetLogger("MediaEncoder"),
                 JsonSerializer,
                 info.EncoderPath,
                 info.ProbePath,
-                info.Version,
+                _hasExternalEncoder,
                 ServerConfigurationManager,
                 FileSystemManager,
                 LiveTvManager,