> -----Original Message----- > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of > Michael Niedermayer > Sent: marți, 4 iunie 2024 01:42 > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> > Subject: Re: [FFmpeg-devel] [PATCH] area changed: scdet filter > > On Sun, Jun 02, 2024 at 11:17:29PM +0300, radu.taraib...@gmail.com wrote: > > > > > > > -----Original Message----- > > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of > > > Michael Niedermayer > > > Sent: vineri, 31 mai 2024 00:32 > > > To: FFmpeg development discussions and patches > > > <ffmpeg-devel@ffmpeg.org> > > > Subject: Re: [FFmpeg-devel] [PATCH] area changed: scdet filter > > > > > > On Mon, May 13, 2024 at 06:52:19PM +0300, radu.taraib...@gmail.com > > > wrote: > > > > Previous observations: > > > > > > > > - Inconsistent code style with other filters. (Mostly using > > > > AVFilterLink* link instead of AVFilterLink *link). > > > > I hope it's fine now. > > > > > > > > - Unrelated changes, please split trivial unrelated changes into > > > > separate patches. > > > > Removed trivial changes from this patch. > > > > > > > > - Can't tables be generated at .init/.config_props time? No point > > > > in storing them into binary. > > > > Done. > > > > > > > > - Adding extra delay is not backward compatible change, it should > > > > be implemented properly by adding option for users to select mode: > > > > next & prev frame or just next or prev frame. > > > > Added legacy option to the mode parameter. > > > > > > > > - Could split frame clone change into earlier separate patch. > > > > Cannot be done. It's either frame clone or 1 frame delay. > > > > > > > > - Where are results of improvements with accuracy so it can be > > confirmed? > > > > Here are my test results with manual labeling of scene changes: > > > > 2379 Full length movie > > > > > > > > Method Threshold TP FP FN Precision > > > > Recall F > > > > Cubic 7 2357 423 22 0.847841727 > > 0.990752417 > > > > 0.913742973 > > > > Cubic 10 2297 200 82 0.919903885 > > 0.965531736 > > > > 0.94216571 > > > > Cubic 12 2217 146 162 0.938214135 > > 0.931904161 > > > > 0.935048503 > > > > Cubic 15 2049 101 330 0.953023256 > > 0.861286255 > > > > 0.904835505 > > > > Linear 2.8 2357 1060 22 0.689786362 > > 0.990752417 > > > > 0.813319531 > > > > Linear 8 2099 236 280 0.898929336 > > 0.882303489 > > > > 0.890538821 > > > > Linear 10 1886 173 493 0.91597863 > > 0.792770071 > > > > 0.849932402 > > > > Legacy 5 2235 1260 144 0.639484979 > > > 0.939470366 > > > > 0.760980592 > > > > Legacy 8 1998 414 381 0.828358209 > > > 0.839848676 > > > > 0.83406387 > > > > Legacy 10 1743 193 636 0.900309917 > > > 0.732660782 > > > > 0.80787949 > > > > > > > > 15 HDR10Plus_PB_EAC3JOC > > > > https://mega.nz/file/nehDka6Z#C5_OPbSZkONdOp1jRmc09C9- > > > viDc3zMj8ZHruHcW > > > > KyA > > > > > > > > Method Threshold TP FP FN Precision > > > > Recall F > > > > Cubic 10 15 0 0 1 1 1 > > > > Linear 5 13 1 2 0.928571429 > > 0.866666667 > > > > 0.896551724 > > > > Legacy 5 12 2 3 0.857142857 0.8 > > > > 0.827586207 > > > > > > > > 21 (HDR HEVC 10-bit BT.2020 24fps) Exodus Sample > > > > > > > > https://mega.nz/file/Sfw1hDpK#ErxCOpQDVjcI1gq6ZbX3vIfdtXZompkFe0jq47 > > > E > > > h > > > > R2o > > > > > > > > Method Threshold TP FP FN Precision > > > > Recall F > > > > Cubic 10 21 0 0 1 1 1 > > > > Linear 4 20 0 1 1 0.952380952 > > > > 0.975609756 > > > > Legacy 4 19 0 2 1 0.904761905 > > > 0.95 > > > > > > > > 94 Bieber Grammys > > > > https://mega.nz/#!c9dhAaKA!MG5Yi- > > > MJNATE2_KqcnNJZCRKtTWvdjJP1NwG8Ggdw3E > > > > > > > > Method Threshold TP FP FN Precision > > > > Recall F > > > > Cubic 15 91 23 3 0.798245614 > > 0.968085106 > > > > 0.875 > > > > Cubic 18 85 9 9 0.904255319 > > 0.904255319 > > > > 0.904255319 > > > > Linear 7 79 49 15 0.6171875 > > 0.840425532 > > > > 0.711711712 > > > > Linear 8 74 28 20 0.725490196 > > 0.787234043 > > > > 0.755102041 > > > > Legacy 7 74 40 20 0.649122807 > > > 0.787234043 > > > > 0.711538462 > > > > Legacy 8 71 26 23 0.731958763 > > > 0.755319149 > > > > 0.743455497 > > > > > > > > > > > > Improve scene detection accuracy by comparing frame with both > > > > previous and next frame (creates one frame delay). > > > > Add new mode parameter and new method to compute the frame > > > > difference using cubic square to increase the weight of small > > > > changes and new mean > > > formula. > > > > This improves accuracy significantly. Slightly improve performance > > > > by not using frame clone. > > > > Add legacy mode for backward compatibility. > > > > > > > > Signed-off-by: raduct <radu.taraib...@gmail.com> > > > > --- > > > > doc/filters.texi | 16 ++++ > > > > libavfilter/scene_sad.c | 151 ++++++++++++++++++++++++++++++++++ > > > > libavfilter/scene_sad.h | 6 ++ > > > > libavfilter/vf_scdet.c | 156 +++++++++++++++++++++++++----------- > > > > tests/fate/filter-video.mak | 3 + > > > > 5 files changed, 284 insertions(+), 48 deletions(-) > > > > > > > > diff --git a/doc/filters.texi b/doc/filters.texi index > > > > bfa8ccec8b..53814e003b 100644 > > > > --- a/doc/filters.texi > > > > +++ b/doc/filters.texi > > > > @@ -21797,6 +21797,22 @@ Default value is @code{10.}. > > > > @item sc_pass, s > > > > Set the flag to pass scene change frames to the next filter. > > > > Default value is @code{0} > > > > > > The patch is corrupted by linebreaks: > > > > > > Applying: area changed: scdet filter > > > error: corrupt patch at line 16 > > > Patch failed at 0001 area changed: scdet filter > > > > > > please check the linebreak settings or attach the patch or use git > > send-email > > > > > > thx > > > > > > [...] > > > -- > > > Michael GnuPG fingerprint: > > > 9FF2128B147EF6730BADF133611EC787040B0FAB > > > > > > Homeopathy is like voting while filling the ballot out with > > > transparent > > ink. > > > Sometimes the outcome one wanted occurs. Rarely its worse than > > > filling out > > a > > > ballot properly. > > > > Please find attached the patch. > > > > > doc/filters.texi | 16 ++++ > > libavfilter/scene_sad.c | 151 > ++++++++++++++++++++++++++++++++++++++++++ > > libavfilter/scene_sad.h | 6 + > > libavfilter/vf_scdet.c | 156 > > ++++++++++++++++++++++++++++++-------------- > > tests/fate/filter-video.mak | 3 > > 5 files changed, 284 insertions(+), 48 deletions(-) > > 8f29f2e1c202ab283a9ca0f5d9599de6ab534d7a > > 0001-area-changed-scdet-filter.patch > > From 6d55c65d92376b0ab6e3bb2439af30fbcc430d0b Mon Sep 17 00:00:00 > 2001 > > From: raduct <radu.taraib...@gmail.com> > > Date: Wed, 8 May 2024 08:24:46 +0300 > > Subject: [PATCH] area changed: scdet filter > > > > Improve scene detection accuracy by comparing frame with both previous > and next frame (creates one frame delay). > > Add new mode parameter and new method to compute the frame difference > using cubic square to increase the weight of small changes and new mean > formula. This improves accuracy significantly. Slightly improve performance by > not using frame clone. > > Add legacy mode for backward compatibility. > > > > Signed-off-by: raduct <radu.taraib...@gmail.com> > > --- > > doc/filters.texi | 16 ++++ > > libavfilter/scene_sad.c | 151 ++++++++++++++++++++++++++++++++++ > > libavfilter/scene_sad.h | 6 ++ > > libavfilter/vf_scdet.c | 156 +++++++++++++++++++++++++----------- > > tests/fate/filter-video.mak | 3 + > > 5 files changed, 284 insertions(+), 48 deletions(-) > > fails to build > > libavfilter/scene_sad.c: In function ‘ff_init_cbrt’: > libavfilter/scene_sad.c:86:5: warning: ISO C90 forbids mixed declarations and > code [-Wdeclaration-after-statement] > 86 | uint8_t *table = cbrt_table[bitdepth]; > | ^~~~~~~ > libavfilter/scene_sad.c:92:13: error: implicit declaration of function > ‘av_malloc’; > did you mean ‘malloc’? [-Werror=implicit-function-declaration] > 92 | table = av_malloc((1 << bitdepth) * (bitdepth > 8 ? 2 : 1)); > | ^~~~~~~~~ > | malloc > libavfilter/scene_sad.c:92:11: warning: assignment to ‘uint8_t *’ {aka > ‘unsigned > char *’} from ‘int’ makes pointer from integer without a cast > [-Wint-conversion] > 92 | table = av_malloc((1 << bitdepth) * (bitdepth > 8 ? 2 : 1)); > | ^ > libavfilter/scene_sad.c:98:5: warning: ISO C90 forbids mixed declarations and > code [-Wdeclaration-after-statement] > 98 | int size = 1 << bitdepth; > | ^~~ > libavfilter/scene_sad.c: In function ‘ff_uninit_cbrt’: > libavfilter/scene_sad.c:120:9: error: implicit declaration of function > ‘av_free’; > did you mean ‘free’? [-Werror=implicit-function-declaration] > 120 | av_free(cbrt_table[bitdepth]); > | ^~~~~~~ > | free > libavfilter/scene_sad.c: At top level: > libavfilter/scene_sad.c:126:6: error: no previous prototype for > ‘ff_scene_scrd_c’ [-Werror=missing-prototypes] > 126 | void ff_scene_scrd_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~ > libavfilter/scene_sad.c: In function ‘ff_scene_scrd_c’: > libavfilter/scene_sad.c:148:5: warning: ISO C90 forbids mixed declarations and > code [-Wdeclaration-after-statement] > 148 | double mean = (sqrt(scrdPlus) + sqrt(scrdMinus)) / 2.0; > | ^~~~~~ > libavfilter/scene_sad.c: At top level: > libavfilter/scene_sad.c:152:6: error: no previous prototype for > ‘ff_scene_scrd2B_c’ [-Werror=missing-prototypes] > 152 | void ff_scene_scrd2B_c(SCENE_SAD_PARAMS, int bitdepth) > | ^~~~~~~~~~~~~~~~~ > libavfilter/scene_sad.c: In function ‘ff_scene_scrd2B_c’: > libavfilter/scene_sad.c:179:5: warning: ISO C90 forbids mixed declarations and > code [-Wdeclaration-after-statement] > 179 | double mean = (sqrt(scrdPlus) + sqrt(scrdMinus)) / 2.0; > | ^~~~~~ > libavfilter/scene_sad.c: At top level: > libavfilter/scene_sad.c:183:6: error: no previous prototype for > ‘ff_scene_scrd9_c’ [-Werror=missing-prototypes] > 183 | void ff_scene_scrd9_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~~ > libavfilter/scene_sad.c:188:6: error: no previous prototype for > ‘ff_scene_scrd10_c’ [-Werror=missing-prototypes] > 188 | void ff_scene_scrd10_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~~~ > libavfilter/scene_sad.c:193:6: error: no previous prototype for > ‘ff_scene_scrd12_c’ [-Werror=missing-prototypes] > 193 | void ff_scene_scrd12_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~~~ > libavfilter/scene_sad.c:198:6: error: no previous prototype for > ‘ff_scene_scrd14_c’ [-Werror=missing-prototypes] > 198 | void ff_scene_scrd14_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~~~ > libavfilter/scene_sad.c:203:6: error: no previous prototype for > ‘ff_scene_scrd16_c’ [-Werror=missing-prototypes] > 203 | void ff_scene_scrd16_c(SCENE_SAD_PARAMS) > | ^~~~~~~~~~~~~~~~~ > cc1: some warnings being treated as errors > make: *** [ffbuild/common.mak:81: libavfilter/scene_sad.o] Error 1 > make: *** Waiting for unfinished jobs.... > > > [...] > > -- > Michael GnuPG fingerprint: > 9FF2128B147EF6730BADF133611EC787040B0FAB > > Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. > User questions about the command line tools should be sent to the ffmpeg- > user ML. > And questions about how to use libav* should be sent to the libav-user ML.
Please find attached a new version of the patch. I'm building using msvc and I don't get these warnings.
0001-area-changed-scdet-filter.patch
Description: Binary data
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