diff --git a/Changelog b/Changelog
index d4ca674b1b..3b5a4880cb 100644
--- a/Changelog
+++ b/Changelog
@@ -19,6 +19,7 @@ version 5.1:
 - blurdetect filter
 - tiltshelf audio filter
 - QOI image format support
+- cropdetect_video video filter
 
 
 version 5.0:
diff --git a/doc/filters.texi b/doc/filters.texi
index d65e83d4d0..5117e12623 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10108,6 +10108,75 @@ indicates 'never reset', and returns the largest area encountered during
 playback.
 @end table
 
+@anchor{cropdetect_video}
+@section cropdetect_video
+
+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 video playback area of the input video.
+It can detect videos embedded even in non-black areas although it supports only 8 bit pixel formats.
+
+It accepts the following parameters:
+
+@table @option
+
+@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}.
+
+@item round
+The value which the width/height should be divisible by. It defaults to
+16. The offset is automatically adjusted to center the video. Use 2 to
+get only even dimensions (needed for 4:2:2 video). 16 is best when
+encoding to most video codecs.
+
+@item skip
+Set the number of initial frames for which evaluation is skipped.
+Default is 2. Range is 0 to INT_MAX.
+
+@item reset_count, reset
+Set the counter that determines after how many frames cropdetect will
+reset the previously detected largest video area and start over to
+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.
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Find an embedded video area, generate motion vectors beforehand:
+@example
+ffmpeg -i file.mp4 -vf mestimate,cropdetect_video,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_video,metadata=mode=print -f null -
+@end example
+@end itemize
+
+
 @anchor{cue}
 @section cue
 
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index e0e4d0de2c..8e4b4d33b1 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -235,6 +235,7 @@ OBJS-$(CONFIG_COREIMAGE_FILTER)              += vf_coreimage.o
 OBJS-$(CONFIG_COVER_RECT_FILTER)             += vf_cover_rect.o lavfutils.o
 OBJS-$(CONFIG_CROP_FILTER)                   += vf_crop.o
 OBJS-$(CONFIG_CROPDETECT_FILTER)             += vf_cropdetect.o
+OBJS-$(CONFIG_CROPDETECT_VIDEO_FILTER)       += vf_cropdetect.o
 OBJS-$(CONFIG_CUE_FILTER)                    += f_cue.o
 OBJS-$(CONFIG_CURVES_FILTER)                 += vf_curves.o
 OBJS-$(CONFIG_DATASCOPE_FILTER)              += vf_datascope.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 2f72477523..d68746a4b0 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -219,6 +219,7 @@ extern const AVFilter ff_vf_coreimage;
 extern const AVFilter ff_vf_cover_rect;
 extern const AVFilter ff_vf_crop;
 extern const AVFilter ff_vf_cropdetect;
+extern const AVFilter ff_vf_cropdetect_video;
 extern const AVFilter ff_vf_cue;
 extern const AVFilter ff_vf_curves;
 extern const AVFilter ff_vf_datascope;
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 86b33c4174..814ab071da 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -31,7 +31,7 @@
 
 #include "version_major.h"
 
-#define LIBAVFILTER_VERSION_MINOR  40
+#define LIBAVFILTER_VERSION_MINOR  41
 #define LIBAVFILTER_VERSION_MICRO 100
 
 
diff --git a/libavfilter/vf_cropdetect.c b/libavfilter/vf_cropdetect.c
index b887b9ecb1..f2e25ff90d 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 +74,29 @@ static const enum AVPixelFormat pix_fmts[] = {
     AV_PIX_FMT_NONE
 };
 
+static const enum AVPixelFormat pix_fmts_video[] = {
+    AV_PIX_FMT_GRAY8,
+    AV_PIX_FMT_GBRP,     AV_PIX_FMT_GBRAP,
+    AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV440P,
+    AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,
+    AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
+    AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
+    AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
+    AV_PIX_FMT_NONE
+};
+
+enum CropMode {
+    MODE_BELOW_TH,
+    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;
@@ -116,6 +152,36 @@ 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;
@@ -128,6 +194,31 @@ static av_cold int init(AVFilterContext *ctx)
     return 0;
 }
 
+static av_cold int init_video(AVFilterContext *ctx)
+{
+    CropDetectContext *s = ctx->priv;
+
+    s->mode    = MODE_MV_EDGES;
+    s->low_u8  = s->low  * 255. + .5;
+    s->high_u8 = s->high * 255. + .5;
+
+    return init(ctx);
+}
+
+static av_cold void uninit_video(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;
@@ -147,6 +238,29 @@ static int config_input(AVFilterLink *inlink)
     return 0;
 }
 
+static int config_input_video(AVFilterLink *inlink)
+{
+    AVFilterContext *ctx = inlink->dst;
+    CropDetectContext *s = ctx->priv;
+    const int bufsize = inlink->w * inlink->h;
+
+    s->window_size = FFMAX(s->reset_count, 15);
+    s->tmpbuf     = av_malloc(bufsize);
+    s->filterbuf  = av_malloc(bufsize);
+    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 config_input(inlink);
+}
+
 #define SET_META(key, value) \
     av_dict_set_int(metadata, key, value, 0)
 
@@ -155,11 +269,20 @@ 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;
+
     // ignore first s->skip frames
     if (++s->frame_nb > 0) {
         metadata = &frame->metadata;
@@ -185,11 +308,105 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
                 last_y = y INC;\
         }
 
+        if (s->mode == MODE_BELOW_TH) {
         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
+                ff_gaussian_blur(inw, inh,
+                                 filterbuf,  inw,
+                                 frame->data[0], frame->linesize[0]);
+
+                // compute the 16-bits gradients and directions for the next step
+                ff_sobel(inw, inh, gradients, inw, directions, inw, filterbuf, inw);
+
+                // 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;
+                    }
+                }
+
+                // 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!
@@ -243,10 +460,14 @@ 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 },
+    { "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 }
 };
 
 AVFILTER_DEFINE_CLASS(cropdetect);
+AVFILTER_DEFINE_CLASS_EXT(cropdetect_video, "cropdetect_video", cropdetect_options);
 
 static const AVFilterPad avfilter_vf_cropdetect_inputs[] = {
     {
@@ -257,6 +478,15 @@ static const AVFilterPad avfilter_vf_cropdetect_inputs[] = {
     },
 };
 
+static const AVFilterPad avfilter_vf_cropdetect_video_inputs[] = {
+    {
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_VIDEO,
+        .config_props = config_input_video,
+        .filter_frame = filter_frame,
+    },
+};
+
 static const AVFilterPad avfilter_vf_cropdetect_outputs[] = {
     {
         .name = "default",
@@ -275,3 +505,16 @@ const AVFilter ff_vf_cropdetect = {
     FILTER_PIXFMTS_ARRAY(pix_fmts),
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_METADATA_ONLY,
 };
+
+const AVFilter ff_vf_cropdetect_video = {
+    .name          = "cropdetect_video",
+    .description   = NULL_IF_CONFIG_SMALL("Auto-detect crop size of an embedded video area."),
+    .priv_size     = sizeof(CropDetectContext),
+    .priv_class    = &cropdetect_video_class,
+    .init          = init_video,
+    .uninit        = uninit_video,
+    FILTER_INPUTS(avfilter_vf_cropdetect_video_inputs),
+    FILTER_OUTPUTS(avfilter_vf_cropdetect_outputs),
+    FILTER_PIXFMTS_ARRAY(pix_fmts_video),
+    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_METADATA_ONLY,
+};
diff --git a/tests/fate/filter-video.mak b/tests/fate/filter-video.mak
index faed832cd4..2da4018785 100644
--- a/tests/fate/filter-video.mak
+++ b/tests/fate/filter-video.mak
@@ -647,6 +647,14 @@ FATE_METADATA_FILTER-$(call ALLYES, $(CROPDETECT_DEPS)) += fate-filter-metadata-
 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"
 
+CROPDETECT_VIDEO_DEPS = LAVFI_INDEV FILE_PROTOCOL MOVIE_FILTER MESTIMATE_FILTER CROPDETECT_VIDEO_FILTER \
+                  SCALE_FILTER MOV_DEMUXER H264_DECODER
+FATE_METADATA_FILTER-$(call ALLYES, $(CROPDETECT_VIDEO_DEPS)) += fate-filter-metadata-cropdetect_video1 fate-filter-metadata-cropdetect_video2
+fate-filter-metadata-cropdetect_video1: SRC = $(TARGET_SAMPLES)/filter/cropdetect_video1.mp4
+fate-filter-metadata-cropdetect_video1: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',mestimate,cropdetect_video,metadata=mode=print"
+fate-filter-metadata-cropdetect_video2: SRC = $(TARGET_SAMPLES)/filter/cropdetect_video2.mp4
+fate-filter-metadata-cropdetect_video2: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;movie='$(SRC)',mestimate,cropdetect_video,metadata=mode=print"
+
 FREEZEDETECT_DEPS = LAVFI_INDEV MPTESTSRC_FILTER SCALE_FILTER FREEZEDETECT_FILTER
 FATE_METADATA_FILTER-$(call ALLYES, $(FREEZEDETECT_DEPS)) += fate-filter-metadata-freezedetect
 fate-filter-metadata-freezedetect: CMD = run $(FILTER_METADATA_COMMAND) "sws_flags=+accurate_rnd+bitexact;mptestsrc=r=25:d=10:m=51,freezedetect"
diff --git a/tests/ref/fate/filter-metadata-cropdetect_video1 b/tests/ref/fate/filter-metadata-cropdetect_video1
new file mode 100644
index 0000000000..892373cc11
--- /dev/null
+++ b/tests/ref/fate/filter-metadata-cropdetect_video1
@@ -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-cropdetect_video2 b/tests/ref/fate/filter-metadata-cropdetect_video2
new file mode 100644
index 0000000000..6b433d17cb
--- /dev/null
+++ b/tests/ref/fate/filter-metadata-cropdetect_video2
@@ -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
