[FFmpeg-devel] [PATCH, v3 2/2] doc/ffmpeg.texi: update docs for autoscale/autorotate

[Linjie Fu]

Add docs for autoscale.

Update information for autorotate according to ffplay.

Signed-off-by: U. Artie Eoff <ullysses.a.eoff at intel.com>
Signed-off-by: Linjie Fu <linjie.fu at intel.com>
---
 doc/ffmpeg.texi | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index cd35eb49c8..99121b6981 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -734,10 +734,6 @@ ffmpeg -dump_attachment:t "" -i INPUT
 Technical note -- attachments are implemented as codec extradata, so this
 option can actually be used to extract extradata from any stream, not just
 attachments.
-
- at item -noautorotate
-Disable automatically rotating video based on file metadata.
-
 @end table
 
 @section Video Options
@@ -819,6 +815,19 @@ Create the filtergraph specified by @var{filtergraph} and use it to
 filter the stream.
 
 This is an alias for @code{-filter:v}, see the @ref{filter_option,,-filter option}.
+
+ at item -autorotate
+Automatically rotate the video according to file metadata. Enabled by
+default, use @option{-noautorotate} to disable it.
+
+ at item -autoscale
+Automatically scale the video according to the resolution of first frame.
+Enabled by default, use @option{-noautoscale} to disable it. When autoscale is
+disabled, all output frames might not be in the same resolution and may require
+some additional explicit processing according to your final rendering/output
+destination. Disabling autoscale may not work in all situations. Therefore, it
+is not recommended to disable it unless you really know what you are doing.
+Disable autoscale at your own risk.
 @end table
 
 @section Advanced Video options
-- 
2.17.1