Bring hls segments back into apple spec

MediaBrowser.Api/Playback/Hls/VideoHlsService.cs

@@ -129,7 +129,7 @@ namespace MediaBrowser.Api.Playback.Hls
 
             if (bitrate.HasValue)
             {
-                args += string.Format(" -b:v {0} -maxrate ({0}*.85) -bufsize {0}", bitrate.Value.ToString(UsCulture));
+                args += string.Format(" -b:v {0} -maxrate ({0}*.80) -bufsize {0}", bitrate.Value.ToString(UsCulture));
             }
 
             // Add resolution params, if specified