lavfi: add frame counter into AVFilterLink and use it in filters.

1 files changed, 1 insertions, 1 deletions

diff --git a/libavfilter/f_select.c b/libavfilter/f_select.c
index 0421349ff8..b0df507d00 100644
--- a/libavfilter/f_select.c
+++ b/libavfilter/f_select.c
@@ -283,6 +283,7 @@ static void select_frame(AVFilterContext *ctx, AVFrame *frame)
     if (isnan(select->var_values[VAR_START_T]))
         select->var_values[VAR_START_T] = TS2D(frame->pts) * av_q2d(inlink->time_base);
 
+    select->var_values[VAR_N  ] = inlink->frame_count;
     select->var_values[VAR_PTS] = TS2D(frame->pts);
     select->var_values[VAR_T  ] = TS2D(frame->pts) * av_q2d(inlink->time_base);
     select->var_values[VAR_POS] = av_frame_get_pkt_pos(frame) == -1 ? NAN : av_frame_get_pkt_pos(frame);
@@ -352,7 +353,6 @@ static void select_frame(AVFilterContext *ctx, AVFrame *frame)
             select->var_values[VAR_CONSUMED_SAMPLES_N] += frame->nb_samples;
     }
 
-    select->var_values[VAR_N] += 1.0;
     select->var_values[VAR_PREV_PTS] = select->var_values[VAR_PTS];
     select->var_values[VAR_PREV_T]   = select->var_values[VAR_T];
 }