swscale: fix aspect-ratio problem properly

works with transform filter now too, fixes #7437 again.

diff --git a/modules/video_filter/swscale.c b/modules/video_filter/swscale.c
index 7b3d7915f2cb942c504cf1edf9c0b82eeaf941b0..7854a301a98854482e504b8c7716b0518c6d0f41 100644 (file)
--- a/modules/video_filter/swscale.c
+++ b/modules/video_filter/swscale.c
@@ -207,8 +207,8 @@ static int OpenScaler( vlc_object_t *p_this )
              (char *)&p_filter->fmt_out.video.i_chroma,
              ppsz_mode_descriptions[i_sws_mode] );
 
-    p_filter->fmt_out.video.i_sar_num = p_filter->fmt_in.video.i_sar_num;
-    p_filter->fmt_out.video.i_sar_den = p_filter->fmt_in.video.i_sar_den;
+    p_filter->fmt_out.video.i_sar_num = p_filter->fmt_in.video.i_sar_num * p_filter->fmt_in.video.i_width / p_filter->fmt_out.video.i_width;
+    p_filter->fmt_out.video.i_sar_den = p_filter->fmt_in.video.i_sar_den * p_filter->fmt_in.video.i_height / p_filter->fmt_out.video.i_height;
 
     return VLC_SUCCESS;
 }