[FFmpeg-devel] [PATCH] ffplay: port avfilter buffersrc fps code from ffmpeg

[Michael Niedermayer]

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
 ffplay.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/ffplay.c b/ffplay.c
index fb09dd6..abf7419 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -1760,6 +1760,16 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
     AVCodecContext *codec = is->video_st->codec;
+    AVRational fr = is->video_st->r_frame_rate;
+
+    if (is->video_st->codec->ticks_per_frame>1) {
+        AVRational codec_fr = av_inv_q(is->video_st->codec->time_base);
+        AVRational   avg_fr = is->video_st->avg_frame_rate;
+        codec_fr.den *= is->video_st->codec->ticks_per_frame;
+        if (   codec_fr.num>0 && codec_fr.den>0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
+            && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr)))>0.1)
+            fr = codec_fr;
+    }
 
     if (!buffersink_params)
         return AVERROR(ENOMEM);
@@ -1773,6 +1783,8 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
              frame->width, frame->height, frame->format,
              is->video_st->time_base.num, is->video_st->time_base.den,
              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
+    if (fr.num && fr.den)
+        av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
 
     if ((ret = avfilter_graph_create_filter(&filt_src,
                                             avfilter_get_by_name("buffer"),
-- 
1.7.9.5