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-rw-r--r--doc/ffmpeg-doc.texi18
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi
index bb093f7d6c..46150c7155 100644
--- a/doc/ffmpeg-doc.texi
+++ b/doc/ffmpeg-doc.texi
@@ -229,7 +229,23 @@ Show help.
Show version.
@item -formats
-Show available formats, codecs, protocols, ...
+Show available formats, codecs, bitstream filters, protocols, and frame size and frame rate abbreviations.
+
+The fields preceding the format and codec names have the following meanings:
+@table @samp
+@item D
+Decoding available
+@item E
+Encoding available
+@item V/A/S
+Video/audio/subtitle codec
+@item S
+Codec supports slices
+@item D
+Codec supports direct rendering
+@item T
+Codec can handle input truncated at random locations instead of only at frame boundaries
+@end table
@item -f @var{fmt}
Force format.