video: pass through container fps to filters

This means vf_vapoursynth doesn't need a hack to work around the filter
code, and libavfilter filters now actually get the frame_rate field on
input pads set.

The libavfilter doxygen says the frame_rate field is only to be set if
the frame rate is known to be constant, and uses the word "must" (which
probably means they really mean it?) - but ffmpeg.c sets the field to
mere guesses anyway, and it looks like this normally won't lead to
problems.

1 files changed, 0 insertions, 7 deletions

diff --git a/filters/f_output_chain.c b/filters/f_output_chain.c
index e986614e9d..cd577a6ca2 100644
--- a/filters/f_output_chain.c
+++ b/filters/f_output_chain.c
@@ -357,12 +357,6 @@ static double get_display_fps(struct mp_stream_info *i)
     return res;
 }
 
-static double get_container_fps(struct mp_stream_info *i)
-{
-    struct chain *p = i->priv;
-    return p->public.container_fps;
-}
-
 void mp_output_chain_set_vo(struct mp_output_chain *c, struct vo *vo)
 {
     struct chain *p = c->f->priv;
@@ -650,7 +644,6 @@ static void create_video_things(struct chain *p)
 
     p->stream_info.priv = p;
     p->stream_info.get_display_fps = get_display_fps;
-    p->stream_info.get_container_fps = get_container_fps;
 
     p->f->stream_info = &p->stream_info;