#define LIBAVFILTER_VERSION_MAJOR 2
#define LIBAVFILTER_VERSION_MINOR 27
-#define LIBAVFILTER_VERSION_MICRO 0
+#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
unsigned int bthresh; ///< black threshold
unsigned int frame; ///< frame number
unsigned int nblack; ///< number of black pixels counted so far
+ unsigned int last_keyframe; ///< frame number of the last received key-frame
} BlackFrameContext;
static int query_formats(AVFilterContext *ctx)
blackframe->bthresh = 32;
blackframe->nblack = 0;
blackframe->frame = 0;
+ blackframe->last_keyframe = 0;
if (args)
sscanf(args, "%u:%u", &blackframe->bamount, &blackframe->bthresh);
AVFilterBufferRef *picref = inlink->cur_buf;
int pblack = 0;
+ if (picref->video->key_frame)
+ blackframe->last_keyframe = blackframe->frame;
+
pblack = blackframe->nblack * 100 / (inlink->w * inlink->h);
if (pblack >= blackframe->bamount)
- av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f\n",
+ av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f "
+ "type:%c last_keyframe:%d\n",
blackframe->frame, pblack, picref->pos, picref->pts,
- picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base));
+ picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base),
+ av_get_picture_type_char(picref->video->pict_type), blackframe->last_keyframe);
blackframe->frame++;
blackframe->nblack = 0;