From 57655c608078cc14476e798a1e31e5eeabf1b278 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefasab@gmail.com>
Date: Fri, 15 Apr 2011 16:14:22 +0200
Subject: [PATCH] doc/metadata: add notes and examples regarding metadata usage
 with ffmpeg

---
 doc/metadata.texi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/doc/metadata.texi b/doc/metadata.texi
index 2a285757cc..b7fc789e2a 100644
--- a/doc/metadata.texi
+++ b/doc/metadata.texi
@@ -65,4 +65,20 @@ title=chapter \#1
 title=multi\
 line
 @end example
+
+By using the ffmetadata muxer and demuxer it is possible to extract
+metadata from an input file to an ffmetadata file, and then transcode
+the file into an output file with the edited ffmetadata file.
+
+Extracting an ffmetadata file with @file{ffmpeg} goes as follows:
+@example
+ffmpeg -i INPUT -f ffmetadata FFMETADATAFILE
+@end example
+
+Reinserting edited metadata information from the FFMETADATAFILE file can
+be done as:
+@example
+ffmpeg -i INPUT -i FFMETADATAFILE -map_metadata 1 -codec copy OUTPUT
+@end example
+
 @c man end METADATA