Signed-off-by: Paul B Mahol <one...@gmail.com> --- doc/filters.texi | 3 +++ libavfilter/vf_fps.c | 10 +++++++++- 2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/doc/filters.texi b/doc/filters.texi index 11f715319a..1e815bf940 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -10737,6 +10737,9 @@ Pass through last frame if input duration has not been reached yet. @end table The default is @code{round}. +@item input +Pick output frame rate from input if it is available. The default is disabled. +Useful to change input to constant frame rate without needing to know input frame rate. @end table Alternatively, the options can be specified as a flat string: diff --git a/libavfilter/vf_fps.c b/libavfilter/vf_fps.c index cf1e36726a..7c9762864b 100644 --- a/libavfilter/vf_fps.c +++ b/libavfilter/vf_fps.c @@ -70,6 +70,7 @@ typedef struct FPSContext { int frames_out; ///< number of frames on output int dup; ///< number of frames duplicated int drop; ///< number of framed dropped + int input; ///< should filter use input framerate if one is set } FPSContext; #define OFFSET(x) offsetof(FPSContext, x) @@ -87,6 +88,7 @@ static const AVOption fps_options[] = { { "eof_action", "action performed for last frame", OFFSET(eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_ROUND }, 0, EOF_ACTION_NB-1, V|F, "eof_action" }, { "round", "round similar to other frames", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ROUND }, 0, 0, V|F, "eof_action" }, { "pass", "pass through last frame", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, 0, 0, V|F, "eof_action" }, + { "input", "use input framerate if available", OFFSET(input), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, V|F }, { NULL } }; @@ -99,7 +101,6 @@ static av_cold int init(AVFilterContext *ctx) s->status_pts = AV_NOPTS_VALUE; s->next_pts = AV_NOPTS_VALUE; - av_log(ctx, AV_LOG_VERBOSE, "fps=%d/%d\n", s->framerate.num, s->framerate.den); return 0; } @@ -153,8 +154,15 @@ static int config_props(AVFilterLink* outlink) AVFilterLink *inlink = ctx->inputs[0]; FPSContext *s = ctx->priv; + if (s->input && inlink->frame_rate.num > 0 && inlink->frame_rate.den > 0) { + outlink->time_base = av_inv_q(inlink->frame_rate); + outlink->frame_rate = inlink->frame_rate; + } else { outlink->time_base = av_inv_q(s->framerate); outlink->frame_rate = s->framerate; + } + + av_log(ctx, AV_LOG_VERBOSE, "fps=%d/%d\n", outlink->frame_rate.num, outlink->frame_rate.den); /* Calculate the input and output pts offsets for start_time */ if (s->start_time != DBL_MAX && s->start_time != AV_NOPTS_VALUE) { -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".