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| author | Limin Wang <lance.lmwang@gmail.com> | 2019-09-20 11:08:35 +0800 |
|---|---|---|
| committer | Limin Wang <lance.lmwang@gmail.com> | 2020-05-14 23:03:07 +0800 |
| commit | 815a3b393c23e9a794235870ded3bc30d973e16b (patch) | |
| tree | e3e0335f6adf037f09a4023bab42a57a0286b604 | |
| parent | 61cc009d533208843984b599df4d9aaf4f8d2d43 (diff) | |
| download | ffmpeg-815a3b393c23e9a794235870ded3bc30d973e16b.tar.gz | |
avfilter/vf_minterpolate: change the default threshold to get better scene change detect result
./ffmpeg -loglevel debug -i ../fate-suite/svq3/Vertical400kbit.sorenson3.mov -vf
minterpolate=fps=60:mi_mode=blend -an -f null -
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 1600
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 4120
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 5780
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 6700
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 8140
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 9740
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 14060
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 15680
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 18480
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 20020
[Parsed_minterpolate_0 @ 0x7fe7f3e193c0] scene changed, input pts 21740
The results are consistent with tests/ref/fate/filter-metadata-scenedetect
For the master, it'll detect more than 20 scene change for the same source.
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
| -rw-r--r-- | doc/filters.texi | 2 | ||||
| -rw-r--r-- | libavfilter/vf_minterpolate.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index a3e78b1d20..f73d4057c1 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -13640,7 +13640,7 @@ Frame difference. Corresponding pixel values are compared and if it satisfies @v Default method is @samp{fdiff}. @item scd_threshold -Scene change detection threshold. Default is @code{5.0}. +Scene change detection threshold. Default is @code{10.}. @end table @section mix diff --git a/libavfilter/vf_minterpolate.c b/libavfilter/vf_minterpolate.c index 1e609f220c..ef47140946 100644 --- a/libavfilter/vf_minterpolate.c +++ b/libavfilter/vf_minterpolate.c @@ -230,7 +230,7 @@ static const AVOption minterpolate_options[] = { { "scd", "scene change detection method", OFFSET(scd_method), AV_OPT_TYPE_INT, {.i64 = SCD_METHOD_FDIFF}, SCD_METHOD_NONE, SCD_METHOD_FDIFF, FLAGS, "scene" }, CONST("none", "disable detection", SCD_METHOD_NONE, "scene"), CONST("fdiff", "frame difference", SCD_METHOD_FDIFF, "scene"), - { "scd_threshold", "scene change threshold", OFFSET(scd_threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 5.0}, 0, 100.0, FLAGS }, + { "scd_threshold", "scene change threshold", OFFSET(scd_threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100.0, FLAGS }, { NULL } }; @@ -1105,6 +1105,7 @@ static void interpolate(AVFilterLink *inlink, AVFrame *avf_out) } if (mi_ctx->scene_changed) { + av_log(ctx, AV_LOG_DEBUG, "scene changed, input pts %"PRId64"\n", mi_ctx->frames[1].avf->pts); /* duplicate frame */ av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf); return; |