update hls params

MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs

@@ -895,7 +895,7 @@ namespace MediaBrowser.Api.Playback.Hls
                     timeDeltaParam = string.Format("-segment_time_delta -{0}", startTime);
                 }
 
-                return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {10} -individual_header_trailer 0 -segment_format mpegts -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
+                return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {10} -individual_header_trailer 0 -write_empty_segments 1 -segment_format mpegts -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
                     inputModifier,
                     GetInputArgument(state),
                     threads,