On Sat, Nov 01, 2014 at 07:08:53AM -0700, Kevin Mitchell wrote: > > doc/filters.texi | 7 +++++++ > libavfilter/version.h | 2 +- > libavfilter/vf_idet.c | 45 +++++++++++++++++++++++++++++++++------------ > libavfilter/vf_idet.h | 2 ++ > 4 files changed, 43 insertions(+), 13 deletions(-) > 5d2c485705ed33022dda83da39bd9f1fc28a97e5 > 0002-avfilter-vf_idet-add-a-reset_count-option-like-cropd.patch > From 2ac0c4b6bab752c92ffa615c028cd4582441f680 Mon Sep 17 00:00:00 2001 > From: Kevin Mitchell <kevmi...@gmail.com> > Date: Sat, 1 Nov 2014 05:38:35 -0700 > Subject: [PATCH 2/3] avfilter/vf_idet: add a "reset_count" option like > cropdetect > > This can be useful for videos in which the interlacing pattern changes. > > Also log the total number of frames as metadata and with avlog. > --- > doc/filters.texi | 7 +++++++ > libavfilter/version.h | 2 +- > libavfilter/vf_idet.c | 45 +++++++++++++++++++++++++++++++++------------ > libavfilter/vf_idet.h | 2 ++ > 4 files changed, 43 insertions(+), 13 deletions(-) > > diff --git a/doc/filters.texi b/doc/filters.texi > index 33f842b..2896978 100644 > --- a/doc/filters.texi > +++ b/doc/filters.texi > @@ -5583,6 +5583,9 @@ Multiple frame detection incorporates the > classification history of previous fra > The filter will log these metadata values: > > @table @option > +@item frames_total > +Total number of frames considered in current statistics. > + > @item single.current_frame > Detected type of current frame using single-frame detection. One of: > ``tff'' (top field first), ``bff'' (bottom field first), > @@ -5625,6 +5628,10 @@ The filter accepts the following options: > Set interlacing threshold. > @item prog_thres > Set progressive threshold. > +@item reset_count > +Number of frames after which idet will reset all previously collected > +statistics. The current statistics are logged before being > +destroyed. The default of 0 indicates 'never reset'. > @end table
some kind of FIR or IIR filtering/windowing of the per frame data is probably better than sharply discarding data at data independant intervalls [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope
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