[FFmpeg-cvslog] doc/filters: Document missing options for scale in/out color matrix

[Jun Zhao]

ffmpeg | branch: master | Jun Zhao <barryjzhao at tencent.com> | Fri Jul  5 12:26:43 2019 +0800| [feade2b403a7fe867387711fb07a80f6c478d2f6] | committer: Jun Zhao

doc/filters: Document missing options for scale in/out color matrix

Document missing options for scale in/out color matrix

Reviewed-by: Gyan Doshi <ffmpeg at gyani.pro>
Signed-off-by: Jun Zhao <barryjzhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=feade2b403a7fe867387711fb07a80f6c478d2f6
---

 doc/filters.texi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 700a76f239..3c406a4791 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15151,6 +15151,8 @@ Set color space conforming to the United States Federal Communications
 Commission (FCC) Code of Federal Regulations (CFR) Title 47 (2003) 73.682 (a).
 
 @item bt601
+ at item bt470
+ at item smpte170m
 Set color space conforming to:
 
 @itemize
@@ -15167,6 +15169,9 @@ Society of Motion Picture and Television Engineers (SMPTE) ST 170:2004
 
 @item smpte240m
 Set color space conforming to SMPTE ST 240:1999.
+
+ at item bt2020
+Set color space conforming to ITU-R BT.2020 non-constant luminance system.
 @end table
 
 @item in_range