fixes #407 - Web Client streaming video freeze on audio language or quality modification

MediaBrowser.Api/Playback/BaseStreamingService.cs

@@ -1,4 +1,5 @@
-using MediaBrowser.Common.Extensions;
+using System.Globalization;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.IO;
 using MediaBrowser.Common.MediaInfo;
 using MediaBrowser.Controller;
@@ -111,6 +112,8 @@ namespace MediaBrowser.Api.Playback
             return Path.Combine(folder, GetCommandLineArguments("dummy\\dummy", state, false).GetMD5() + (outputFileExtension ?? string.Empty).ToLower());
         }
 
+        protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
+        
         /// <summary>
         /// The fast seek offset seconds
         /// </summary>
@@ -132,7 +135,7 @@ namespace MediaBrowser.Api.Playback
 
                 if (seconds > 0)
                 {
-                    return string.Format("-ss {0}", seconds);
+                    return string.Format("-ss {0}", seconds.ToString(UsCulture));
                 }
             }
 
@@ -153,7 +156,7 @@ namespace MediaBrowser.Api.Playback
             {
                 if (TimeSpan.FromTicks(time.Value).TotalSeconds - FastSeekOffsetSeconds > 0)
                 {
-                    return string.Format(" -ss {0}", FastSeekOffsetSeconds);
+                    return string.Format(" -ss {0}", FastSeekOffsetSeconds.ToString(UsCulture));
                 }
             }
 

MediaBrowser.Server.Implementations/MediaEncoder/MediaEncoder.cs

@@ -580,8 +580,8 @@ namespace MediaBrowser.Server.Implementations.MediaEncoder
             var fastSeekSeconds = offset.TotalSeconds >= 1 ? offset.TotalSeconds - 1 : 0;
             var slowSeekSeconds = offset.TotalSeconds >= 1 ? 1 : 0;
 
-            var fastSeekParam = fastSeekSeconds > 0 ? "-ss " + fastSeekSeconds + " " : string.Empty;
-            var slowSeekParam = slowSeekSeconds > 0 ? " -ss " + slowSeekSeconds : string.Empty;
+            var fastSeekParam = fastSeekSeconds > 0 ? "-ss " + fastSeekSeconds.ToString(UsCulture) + " " : string.Empty;
+            var slowSeekParam = slowSeekSeconds > 0 ? " -ss " + slowSeekSeconds.ToString(UsCulture) : string.Empty;
 
             var encodingParam = string.IsNullOrEmpty(language) ? string.Empty :
                 GetSubtitleLanguageEncodingParam(language) + " ";
@@ -798,8 +798,8 @@ namespace MediaBrowser.Server.Implementations.MediaEncoder
             var fastSeekSeconds = offset.TotalSeconds >= 1 ? offset.TotalSeconds - 1 : 0;
             var slowSeekSeconds = offset.TotalSeconds >= 1 ? 1 : 0;
 
-            var fastSeekParam = fastSeekSeconds > 0 ? "-ss " + fastSeekSeconds + " " : string.Empty;
-            var slowSeekParam = slowSeekSeconds > 0 ? " -ss " + slowSeekSeconds : string.Empty;
+            var fastSeekParam = fastSeekSeconds > 0 ? "-ss " + fastSeekSeconds.ToString(UsCulture) + " " : string.Empty;
+            var slowSeekParam = slowSeekSeconds > 0 ? " -ss " + slowSeekSeconds.ToString(UsCulture) : string.Empty;
 
             var process = new Process
             {
@@ -1032,7 +1032,7 @@ namespace MediaBrowser.Server.Implementations.MediaEncoder
 
             if (offset.HasValue)
             {
-                args = string.Format("-ss {0} ", Convert.ToInt32(offset.Value.TotalSeconds)) + args;
+                args = string.Format("-ss {0} ", Convert.ToInt32(offset.Value.TotalSeconds)).ToString(UsCulture) + args;
             }
 
             var process = new Process