vsrc_buffer: add sample_aspect_ratio fields to arguments.

This fixes aspect handling in ffmpeg.

This is based on a patch by Baptiste.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

1 files changed, 8 insertions, 3 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index 8f949221a8..48c03f1ed8 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1190,7 +1190,7 @@ This source is mainly intended for a programmatic use, in particular
 through the interface defined in @file{libavfilter/vsrc_buffer.h}.
 
 It accepts the following parameters:
-@var{width}:@var{height}:@var{pix_fmt_string}:@var{timebase_num}:@var{timebase_den}
+@var{width}:@var{height}:@var{pix_fmt_string}:@var{timebase_num}:@var{timebase_den}:@var{sample_aspect_ratio_num}:@var{sample_aspect_ratio.den}
 
 All the parameters need to be explicitely defined.
 
@@ -1209,15 +1209,20 @@ name.
 @item timebase_num, timebase_den
 Specify numerator and denomitor of the timebase assumed by the
 timestamps of the buffered frames.
+
+@item sample_aspect_ratio.num, sample_aspect_ratio.den
+Specify numerator and denominator of the sample aspect ratio assumed
+by the video frames.
 @end table
 
 For example:
 @example
-buffer=320:240:yuv410p:1:24
+buffer=320:240:yuv410p:1:24:1:1
 @end example
 
 will instruct the source to accept video frames with size 320x240 and
-with format "yuv410p" and assuming 1/24 as the timestamps timebase.
+with format "yuv410p", assuming 1/24 as the timestamps timebase and
+square pixels (1:1 sample aspect ratio).
 Since the pixel format with name "yuv410p" corresponds to the number 6
 (check the enum PixelFormat definition in @file{libavutil/pixfmt.h}),
 this example corresponds to: