Update

syntax/modules/mp4-streaming.vim

@@ -0,0 +1,8 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'nginx') == -1
+  
+" MP4 Streaming Lite Module <https://www.nginx.com/resources/wiki/modules/mp4_streaming/>
+" Will seek to a certain time within H.264/MP4 files when provided with a 'start' parameter in the URL.
+syn keyword ngxDirectiveThirdParty mp4
+
+
+endif