[FFmpeg-devel] [PATCH 3/6] ffmpeg.c: document default metadata mappings
Anton Khirnov
anton
Tue Nov 2 22:04:02 CET 2010
---
doc/ffmpeg-doc.texi | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi
index eb7c8fd..b09e57c 100644
--- a/doc/ffmpeg-doc.texi
+++ b/doc/ffmpeg-doc.texi
@@ -594,6 +594,12 @@ Optional @var{metadata} parameters specify, which metadata to copy - (g)lobal
per-(p)rogram. All metadata specifiers other than global must be followed by the
stream/chapter/program number. If metadata specifier is omitted, it defaults to
global.
+
+By default, global metadata is copied from the first input file to all output files,
+per-stream and per-chapter metadata is copied along with streams/chapters. These
+default mappings are disabled by creating any mapping of the relevant type. A negative
+file index can be used to create a dummy mapping that just disables automatic copying.
+
For example to copy metadata from the first stream of the input file to global metadata
of the output file:
@example
--
1.7.2.3
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