From: Thilo Borgmann <thilo.borgmann@mail.de>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH v2 2/2] lavfi/cropdetect: Add new mode to detect crop-area based on motion vectors and edges
Date: Mon, 11 Jul 2022 10:54:08 +0200
Message-ID: <b0b42a83-b7c2-a95c-e21f-aef899222d52@mail.de> (raw)
In-Reply-To: <9bb7f1eb-b927-f2bc-7b4a-292f46ef1a9e@mail.de>
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-Thilo
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From ccc2b5ab29c4ca00c0a59af318fc865d37832377 Mon Sep 17 00:00:00 2001
From: Thilo Borgmann <thilo.borgmann@mail.de>
Date: Mon, 11 Jul 2022 10:48:53 +0200
Subject: [PATCH v2 2/2] lavfi/cropdetect: Add new mode to detect crop-area
based on motion vectors and edges
This filter allows crop detection even if the video is embedded in non-black areas.
---
doc/filters.texi | 42 +++-
libavfilter/vf_cropdetect.c | 211 ++++++++++++++++++++-
tests/fate/filter-video.mak | 8 +-
tests/ref/fate/filter-metadata-cropdetect1 | 9 +
tests/ref/fate/filter-metadata-cropdetect2 | 9 +
5 files changed, 276 insertions(+), 3 deletions(-)
create mode 100644 tests/ref/fate/filter-metadata-cropdetect1
create mode 100644 tests/ref/fate/filter-metadata-cropdetect2
diff --git a/doc/filters.texi b/doc/filters.texi
index d65e83d4d0..bd2d2429d7 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10075,7 +10075,7 @@ Auto-detect the crop size.
It calculates the necessary cropping parameters and prints the
recommended parameters via the logging system. The detected dimensions
-correspond to the non-black area of the input video.
+correspond to the non-black or video area of the input video according to @var{mode}.
It accepts the following parameters:
@@ -10106,8 +10106,48 @@ detect the current optimal crop area. Default value is 0.
This can be useful when channel logos distort the video area. 0
indicates 'never reset', and returns the largest area encountered during
playback.
+
+@item mv_threshold
+Set motion in pixel units as threshold for motion detection. It defaults to 8.
+
+@item low
+@item high
+Set low and high threshold values used by the Canny thresholding
+algorithm.
+
+The high threshold selects the "strong" edge pixels, which are then
+connected through 8-connectivity with the "weak" edge pixels selected
+by the low threshold.
+
+@var{low} and @var{high} threshold values must be chosen in the range
+[0,1], and @var{low} should be lesser or equal to @var{high}.
+
+Default value for @var{low} is @code{5/255}, and default value for @var{high}
+is @code{15/255}.
@end table
+@subsection Examples
+
+@itemize
+@item
+Find video area surrounded by black borders:
+@example
+ffmpeg -i file.mp4 -vf cropdetect,metadata=mode=print -f null -
+@end example
+
+@item
+Find an embedded video area, generate motion vectors beforehand:
+@example
+ffmpeg -i file.mp4 -vf mestimate,cropdetect=mode=mvedges,metadata=mode=print -f null -
+@end example
+
+@item
+Find an embedded video area, use motion vectors from decoder:
+@example
+ffmpeg -flags2 +export_mvs -i file.mp4 -vf cropdetect=mode=mvedges,metadata=mode=print -f null -
+@end example
+@end itemize
+
@anchor{cue}
@section cue
diff --git a/libavfilter/vf_cropdetect.c b/libavfilter/vf_cropdetect.c
index b887b9ecb1..68313064bd 100644
--- a/libavfilter/vf_cropdetect.c
+++ b/libavfilter/vf_cropdetect.c
@@ -26,11 +26,14 @@
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
+#include "libavutil/motion_vector.h"
+#include "libavutil/qsort.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
+#include "edge_common.h"
typedef struct CropDetectContext {
const AVClass *class;
@@ -42,6 +45,16 @@ typedef struct CropDetectContext {
int frame_nb;
int max_pixsteps[4];
int max_outliers;
+ int mode;
+ int window_size;
+ int mv_threshold;
+ float low, high;
+ uint8_t low_u8, high_u8;
+ uint8_t *filterbuf;
+ uint8_t *tmpbuf;
+ uint16_t *gradients;
+ char *directions;
+ int *bboxes[4];
} CropDetectContext;
static const enum AVPixelFormat pix_fmts[] = {
@@ -61,6 +74,17 @@ static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_NONE
};
+enum CropMode {
+ MODE_BLACK,
+ MODE_MV_EDGES,
+ MODE_NB
+};
+
+static int comp(const int *a,const int *b)
+{
+ return FFDIFFSIGN(*a, *b);
+}
+
static int checkline(void *ctx, const unsigned char *src, int stride, int len, int bpp)
{
int total = 0;
@@ -116,11 +140,43 @@ static int checkline(void *ctx, const unsigned char *src, int stride, int len, i
return total;
}
+static int checkline_edge(void *ctx, const unsigned char *src, int stride, int len, int bpp)
+{
+ const uint16_t *src16 = (const uint16_t *)src;
+
+ switch (bpp) {
+ case 1:
+ while (--len >= 0) {
+ if(src[0]) return 0;
+ src += stride;
+ }
+ break;
+ case 2:
+ stride >>= 1;
+ while (--len >= 0) {
+ if(src16[0]) return 0;
+ src16 += stride;
+ }
+ break;
+ case 3:
+ case 4:
+ while (--len >= 0) {
+ if(src[0] || src[1] || src[2]) return 0;
+ src += stride;
+ }
+ break;
+ }
+
+ return 1;
+}
+
static av_cold int init(AVFilterContext *ctx)
{
CropDetectContext *s = ctx->priv;
s->frame_nb = -1 * s->skip;
+ s->low_u8 = s->low * 255. + .5;
+ s->high_u8 = s->high * 255. + .5;
av_log(ctx, AV_LOG_VERBOSE, "limit:%f round:%d skip:%d reset_count:%d\n",
s->limit, s->round, s->skip, s->reset_count);
@@ -128,11 +184,27 @@ static av_cold int init(AVFilterContext *ctx)
return 0;
}
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ CropDetectContext *s = ctx->priv;
+
+ av_freep(&s->tmpbuf);
+ av_freep(&s->filterbuf);
+ av_freep(&s->gradients);
+ av_freep(&s->directions);
+ av_freep(&s->bboxes[0]);
+ av_freep(&s->bboxes[1]);
+ av_freep(&s->bboxes[2]);
+ av_freep(&s->bboxes[3]);
+}
+
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
CropDetectContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ const int bufsize = inlink->w * inlink->h;
+ int bpp;
av_image_fill_max_pixsteps(s->max_pixsteps, NULL, desc);
@@ -144,6 +216,21 @@ static int config_input(AVFilterLink *inlink)
s->x2 = 0;
s->y2 = 0;
+ bpp = s->max_pixsteps[0];
+ s->window_size = FFMAX(s->reset_count, 15);
+ s->tmpbuf = av_malloc(bufsize);
+ s->filterbuf = av_malloc(bufsize * s->max_pixsteps[0]);
+ s->gradients = av_calloc(bufsize, sizeof(*s->gradients));
+ s->directions = av_malloc(bufsize);
+ s->bboxes[0] = av_malloc(s->window_size * sizeof(*s->bboxes[0]));
+ s->bboxes[1] = av_malloc(s->window_size * sizeof(*s->bboxes[1]));
+ s->bboxes[2] = av_malloc(s->window_size * sizeof(*s->bboxes[2]));
+ s->bboxes[3] = av_malloc(s->window_size * sizeof(*s->bboxes[3]));
+
+ if (!s->tmpbuf || !s->filterbuf || !s->gradients || !s->directions ||
+ !s->bboxes[0] || !s->bboxes[1] || !s->bboxes[2] || !s->bboxes[3])
+ return AVERROR(ENOMEM);
+
return 0;
}
@@ -155,11 +242,28 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
AVFilterContext *ctx = inlink->dst;
CropDetectContext *s = ctx->priv;
int bpp = s->max_pixsteps[0];
- int w, h, x, y, shrink_by;
+ int w, h, x, y, shrink_by, i;
AVDictionary **metadata;
int outliers, last_y;
int limit = lrint(s->limit);
+ const int inw = inlink->w;
+ const int inh = inlink->h;
+ uint8_t *tmpbuf = s->tmpbuf;
+ uint8_t *filterbuf = s->filterbuf;
+ uint16_t *gradients = s->gradients;
+ int8_t *directions = s->directions;
+ const AVFrameSideData *sd = NULL;
+ int scan_w, scan_h, bboff;
+
+ void (*sobel)(int w, int h, uint16_t *dst, int dst_linesize,
+ int8_t *dir, int dir_linesize,
+ const uint8_t *src, int src_linesize, int src_stride) = (bpp == 2) ? &ff_sobel16 : &ff_sobel;
+ void (*gaussian_blur)(int w, int h,
+ uint8_t *dst, int dst_linesize,
+ const uint8_t *src, int src_linesize, int src_stride) = (bpp == 2) ? &ff_gaussian_blur16 : &ff_gaussian_blur;
+
+
// ignore first s->skip frames
if (++s->frame_nb > 0) {
metadata = &frame->metadata;
@@ -185,11 +289,109 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
last_y = y INC;\
}
+ if (s->mode == MODE_BLACK) {
FIND(s->y1, 0, y < s->y1, +1, frame->linesize[0], bpp, frame->width);
FIND(s->y2, frame->height - 1, y > FFMAX(s->y2, s->y1), -1, frame->linesize[0], bpp, frame->width);
FIND(s->x1, 0, y < s->x1, +1, bpp, frame->linesize[0], frame->height);
FIND(s->x2, frame->width - 1, y > FFMAX(s->x2, s->x1), -1, bpp, frame->linesize[0], frame->height);
+ } else { // MODE_MV_EDGES
+ sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MOTION_VECTORS);
+ s->x1 = 0;
+ s->y1 = 0;
+ s->x2 = inw - 1;
+ s->y2 = inh - 1;
+
+ if (!sd) {
+ av_log(ctx, AV_LOG_WARNING, "Cannot detect: no motion vectors available");
+ } else {
+ // gaussian filter to reduce noise
+ gaussian_blur(inw, inh,
+ filterbuf, inw*bpp,
+ frame->data[0], frame->linesize[0], bpp);
+
+ // compute the 16-bits gradients and directions for the next step
+ sobel(inw, inh, gradients, inw, directions, inw, filterbuf, inw*bpp, bpp);
+
+ // non_maximum_suppression() will actually keep & clip what's necessary and
+ // ignore the rest, so we need a clean output buffer
+ memset(tmpbuf, 0, inw * inh);
+ ff_non_maximum_suppression(inw, inh, tmpbuf, inw, directions, inw, gradients, inw);
+
+
+ // keep high values, or low values surrounded by high values
+ ff_double_threshold(s->low_u8, s->high_u8, inw, inh,
+ tmpbuf, inw, tmpbuf, inw);
+
+ // scan all MVs and store bounding box
+ s->x1 = inw - 1;
+ s->y1 = inh - 1;
+ s->x2 = 0;
+ s->y2 = 0;
+ for (i = 0; i < sd->size / sizeof(AVMotionVector); i++) {
+ const AVMotionVector *mv = (const AVMotionVector*)sd->data + i;
+ const int mx = mv->dst_x - mv->src_x;
+ const int my = mv->dst_y - mv->src_y;
+
+ if (mv->dst_x >= 0 && mv->dst_x < inw &&
+ mv->dst_y >= 0 && mv->dst_y < inh &&
+ mv->src_x >= 0 && mv->src_x < inw &&
+ mv->src_y >= 0 && mv->src_y < inh &&
+ mx * mx + my * my >= s->mv_threshold * s->mv_threshold) {
+ s->x1 = mv->dst_x < s->x1 ? mv->dst_x : s->x1;
+ s->y1 = mv->dst_y < s->y1 ? mv->dst_y : s->y1;
+ s->x2 = mv->dst_x > s->x2 ? mv->dst_x : s->x2;
+ s->y2 = mv->dst_y > s->y2 ? mv->dst_y : s->y2;
+ }
+ }
+
+ // assert x1<x2, y1<y2
+ if (s->x1 > s->x2) FFSWAP(int, s->x1, s->x2);
+ if (s->y1 > s->y2) FFSWAP(int, s->y1, s->y2);
+
+ // scan outward looking for 0-edge-lines in edge image
+ scan_w = s->x2 - s->x1;
+ scan_h = s->y2 - s->y1;
+
+#define FIND_EDGE(DST, FROM, NOEND, INC, STEP0, STEP1, LEN) \
+ for (last_y = y = FROM; NOEND; y = y INC) { \
+ if (checkline_edge(ctx, tmpbuf + STEP0 * y, STEP1, LEN, bpp)) { \
+ if (last_y INC == y) { \
+ DST = y; \
+ break; \
+ } else \
+ last_y = y; \
+ } \
+ } \
+ if (!(NOEND)) { \
+ DST = y -(INC); \
+ }
+ FIND_EDGE(s->y1, s->y1, y >= 0, -1, inw, bpp, scan_w);
+ FIND_EDGE(s->y2, s->y2, y < inh, +1, inw, bpp, scan_w);
+ FIND_EDGE(s->x1, s->x1, y >= 0, -1, bpp, inw, scan_h);
+ FIND_EDGE(s->x2, s->x2, y < inw, +1, bpp, inw, scan_h);
+
+ // queue bboxes
+ bboff = (s->frame_nb - 1) % s->window_size;
+ s->bboxes[0][bboff] = s->x1;
+ s->bboxes[1][bboff] = s->x2;
+ s->bboxes[2][bboff] = s->y1;
+ s->bboxes[3][bboff] = s->y2;
+
+ // sort queue
+ bboff = FFMIN(s->frame_nb, s->window_size);
+ AV_QSORT(s->bboxes[0], bboff, int, comp);
+ AV_QSORT(s->bboxes[1], bboff, int, comp);
+ AV_QSORT(s->bboxes[2], bboff, int, comp);
+ AV_QSORT(s->bboxes[3], bboff, int, comp);
+
+ // return median of window_size elems
+ s->x1 = s->bboxes[0][bboff/2];
+ s->x2 = s->bboxes[1][bboff/2];
+ s->y1 = s->bboxes[2][bboff/2];
+ s->y2 = s->bboxes[3][bboff/2];
+ }
+ }
// round x and y (up), important for yuv colorspaces
// make sure they stay rounded!
@@ -243,6 +445,12 @@ static const AVOption cropdetect_options[] = {
{ "skip", "Number of initial frames to skip", OFFSET(skip), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, INT_MAX, FLAGS },
{ "reset_count", "Recalculate the crop area after this many frames",OFFSET(reset_count),AV_OPT_TYPE_INT,{ .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "max_outliers", "Threshold count of outliers", OFFSET(max_outliers),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
+ { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_BLACK}, 0, MODE_NB-1, FLAGS, "mode" },
+ { "black", "detect black pixels surrounding the video", 0, AV_OPT_TYPE_CONST, {.i64=MODE_BLACK}, INT_MIN, INT_MAX, FLAGS, "mode" },
+ { "mvedges", "detect motion and edged surrounding the video", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MV_EDGES}, INT_MIN, INT_MAX, FLAGS, "mode" },
+ { "high", "Set high threshold for edge detection", OFFSET(high), AV_OPT_TYPE_FLOAT, {.dbl=25/255.}, 0, 1, FLAGS },
+ { "low", "Set low threshold for edge detection", OFFSET(low), AV_OPT_TYPE_FLOAT, {.dbl=15/255.}, 0, 1, FLAGS },
+ { "mv_threshold", "motion vector threshold when estimating video window size", OFFSET(mv_threshold), AV_OPT_TYPE_INT, {.i64=8}, 0, 100, FLAGS},
{ NULL }
};
@@ -270,6 +478,7 @@ const AVFilter ff_vf_cropdetect = {
.priv_size = sizeof(CropDetectContext),
.priv_class = &cropdetect_class,
.init = init,
+ .uninit = uninit,
FILTER_INPUTS(avfilter_vf_cropdetect_inputs),
FILTER_OUTPUTS(avfilter_vf_cropdetect_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
diff --git a/tests/fate/filter-video.mak b/tests/fate/filter-video.mak
index faed832cd4..372c70bba7 100644
--- a/tests/fate/filter-video.mak
+++ b/tests/fate/filter-video.mak
@@ -641,11 +641,17 @@ FATE_METADATA_FILTER-$(call ALLYES, $(SCDET_DEPS)) += fate-filter-metadata-scdet
fate-filter-metadata-scdet: SRC = $(TARGET_SAMPLES)/svq3/Vertical400kbit.sorenson3.mov
fate-filter-metadata-scdet: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',scdet=s=1"
-CROPDETECT_DEPS = LAVFI_INDEV FILE_PROTOCOL MOVIE_FILTER CROPDETECT_FILTER \
+CROPDETECT_DEPS = LAVFI_INDEV FILE_PROTOCOL MOVIE_FILTER MOVIE_FILTER MESTIMATE_FILTER CROPDETECT_FILTER \
SCALE_FILTER MOV_DEMUXER H264_DECODER
FATE_METADATA_FILTER-$(call ALLYES, $(CROPDETECT_DEPS)) += fate-filter-metadata-cropdetect
fate-filter-metadata-cropdetect: SRC = $(TARGET_SAMPLES)/filter/cropdetect.mp4
fate-filter-metadata-cropdetect: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',cropdetect=max_outliers=3"
+FATE_METADATA_FILTER-$(call ALLYES, $(CROPDETECT_DEPS)) += fate-filter-metadata-cropdetect1
+fate-filter-metadata-cropdetect1: SRC = $(TARGET_SAMPLES)/filter/cropdetect1.mp4
+fate-filter-metadata-cropdetect1: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',mestimate,cropdetect=mode=mvedges,metadata=mode=print"
+FATE_METADATA_FILTER-$(call ALLYES, $(CROPDETECT_DEPS)) += fate-filter-metadata-cropdetect2
+fate-filter-metadata-cropdetect2: SRC = $(TARGET_SAMPLES)/filter/cropdetect2.mp4
+fate-filter-metadata-cropdetect2: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',mestimate,cropdetect=mode=mvedges,metadata=mode=print"
FREEZEDETECT_DEPS = LAVFI_INDEV MPTESTSRC_FILTER SCALE_FILTER FREEZEDETECT_FILTER
FATE_METADATA_FILTER-$(call ALLYES, $(FREEZEDETECT_DEPS)) += fate-filter-metadata-freezedetect
diff --git a/tests/ref/fate/filter-metadata-cropdetect1 b/tests/ref/fate/filter-metadata-cropdetect1
new file mode 100644
index 0000000000..892373cc11
--- /dev/null
+++ b/tests/ref/fate/filter-metadata-cropdetect1
@@ -0,0 +1,9 @@
+pts=0
+pts=1001
+pts=2002|tag:lavfi.cropdetect.x1=20|tag:lavfi.cropdetect.x2=851|tag:lavfi.cropdetect.y1=311|tag:lavfi.cropdetect.y2=601|tag:lavfi.cropdetect.w=832|tag:lavfi.cropdetect.h=288|tag:lavfi.cropdetect.x=20|tag:lavfi.cropdetect.y=314
+pts=3003|tag:lavfi.cropdetect.x1=20|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=311|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=864|tag:lavfi.cropdetect.h=304|tag:lavfi.cropdetect.x=22|tag:lavfi.cropdetect.y=316
+pts=4004|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=115|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=880|tag:lavfi.cropdetect.h=496|tag:lavfi.cropdetect.x=4|tag:lavfi.cropdetect.y=122
+pts=5005|tag:lavfi.cropdetect.x1=20|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=311|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=864|tag:lavfi.cropdetect.h=304|tag:lavfi.cropdetect.x=22|tag:lavfi.cropdetect.y=316
+pts=6006|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=115|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=880|tag:lavfi.cropdetect.h=496|tag:lavfi.cropdetect.x=4|tag:lavfi.cropdetect.y=122
+pts=7007|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=115|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=880|tag:lavfi.cropdetect.h=496|tag:lavfi.cropdetect.x=4|tag:lavfi.cropdetect.y=122
+pts=8008|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=885|tag:lavfi.cropdetect.y1=115|tag:lavfi.cropdetect.y2=621|tag:lavfi.cropdetect.w=880|tag:lavfi.cropdetect.h=496|tag:lavfi.cropdetect.x=4|tag:lavfi.cropdetect.y=122
diff --git a/tests/ref/fate/filter-metadata-cropdetect2 b/tests/ref/fate/filter-metadata-cropdetect2
new file mode 100644
index 0000000000..6b433d17cb
--- /dev/null
+++ b/tests/ref/fate/filter-metadata-cropdetect2
@@ -0,0 +1,9 @@
+pts=0
+pts=512
+pts=1024|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=33|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=34
+pts=1536|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=33|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=34
+pts=2048|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=29|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=32
+pts=2560|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=29|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=32
+pts=3072|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=29|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=32
+pts=3584|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=29|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=32
+pts=4096|tag:lavfi.cropdetect.x1=21|tag:lavfi.cropdetect.x2=817|tag:lavfi.cropdetect.y1=29|tag:lavfi.cropdetect.y2=465|tag:lavfi.cropdetect.w=784|tag:lavfi.cropdetect.h=432|tag:lavfi.cropdetect.x=28|tag:lavfi.cropdetect.y=32
--
2.20.1 (Apple Git-117)
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next prev parent reply other threads:[~2022-07-11 8:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-11 8:53 [FFmpeg-devel] [PATCH v2 1/2] lavfi/edge_common: Add 16bit versions of gaussian_blur and sobel Thilo Borgmann
2022-07-11 8:54 ` Thilo Borgmann [this message]
2022-07-16 21:09 ` [FFmpeg-devel] [PATCH v2 2/2] lavfi/cropdetect: Add new mode to detect crop-area based on motion vectors and edges Thilo Borgmann
2022-07-17 7:54 ` Thilo Borgmann
2022-07-18 14:15 ` Thilo Borgmann
2022-07-16 21:07 ` [FFmpeg-devel] [PATCH v2 1/2] lavfi/edge_common: Add 16bit versions of gaussian_blur and sobel Thilo Borgmann
2022-07-17 7:54 ` Thilo Borgmann
2022-07-18 14:15 ` Thilo Borgmann
2022-07-29 13:11 ` Thilo Borgmann
2022-07-30 11:22 ` Thilo Borgmann
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