ffmpeg: add auto_conversion_filters option.

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index 267ddfe8b5..c054aedf3f 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -1746,6 +1746,16 @@ this buffer, in packets, for the matching output stream.
 The default value of this option should be high enough for most uses, so only
 touch this option if you are sure that you need it.
 
+@item -auto_conversion_filters (@emph{global})
+Enable automatically inserting format conversion filters in all filter
+graphs, including those defined by @option{-vf}, @option{-af},
+@option{-filter_complex} and @option{-lavfi}. If filter format negotiation
+requires a conversion, the initialization of the filters will fail.
+Conversions can still be performed by inserting the relevant conversion
+filter (scale, aresample) in the graph.
+On by default, to explicitly disable it you need to specify
+@code{-noauto_conversion_filters}.
+
 @end table
 
 As a special exception, you can use a bitmap subtitle stream as input: it