A description of the currently available protocols follows.
+@section async
+
+Asynchronous data filling wrapper for input stream.
+
+Fill data in a background thread, to decouple I/O operation from demux thread.
+
+@example
+async:@var{URL}
+async:http://host/resource
+async:cache:http://host/resource
+@end example
+
@section bluray
Read BluRay playlist.