avformat: Add Pro-MPEG CoP #3-R2 FEC protocol

Pro-MPEG Code of Practice #3 release 2 forward error correction for rtp_mpegts streams

Signed-off-by: Vlad Tarca <vtarca@mobibase.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 35 insertions, 0 deletions

diff --git a/doc/protocols.texi b/doc/protocols.texi
index 00e182efdc..e887b75576 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -515,6 +515,41 @@ time, which is valuable if data transmission is slow.
 Note that some formats (typically MOV), require the output protocol to
 be seekable, so they will fail with the pipe output protocol.
 
+@section prompeg
+
+Pro-MPEG Code of Practice #3 Release 2 FEC protocol.
+
+The Pro-MPEG CoP#3 FEC is a 2D parity-check forward error correction mechanism
+for MPEG-2 Transport Streams sent over RTP.
+
+This protocol must be used in conjunction with the @code{rtp_mpegts} muxer and
+the @code{rtp} protocol.
+
+The required syntax is:
+@example
+-f rtp_mpegts -fec prompeg=@var{option}=@var{val}... rtp://@var{hostname}:@var{port}
+@end example
+
+The destination UDP ports are @code{port + 2} for the column FEC stream
+and @code{port + 4} for the row FEC stream.
+
+This protocol accepts the following options:
+@table @option
+
+@item l=@var{n}
+The number of columns (4-20, LxD <= 100)
+
+@item d=@var{n}
+The number of rows (4-20, LxD <= 100)
+
+@end table
+
+Example usage:
+
+@example
+-f rtp_mpegts -fec prompeg=l=8:d=4 rtp://@var{hostname}:@var{port}
+@end example
+
 @section rtmp
 
 Real-Time Messaging Protocol.