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16 Commits

Author SHA1 Message Date
Andreas Rheinhardt
358c0bb168 avfilter/vf_minterpolate: Remove redundant code for freeing 
ad73b32d29 added some code for freeing in
the input's config_props function, yet this is unnecessary as uninit is
called anyway if config_props fails.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-10-09 16:38:28 +02:00
Andreas Rheinhardt
aa262dcce8 avfilter/vf_minterpolate: Fix left shift of negative value 
This has happened when initializing the motion estimation context if
width or height of the video was smaller than the block size used
for motion estimation and if the motion interpolation mode indicates
not to use motion estimation.

The solution is of course to only initialize the motion estimation
context if the interpolation mode uses motion estimation.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-10-09 16:38:28 +02:00
Andreas Rheinhardt
bb13cdbe27 avfilter/vf_minterpolate: Reject too small dimensions 
The latter code relies upon the dimensions to be not too small;
otherwise one will call av_clip() with min > max lateron which aborts
in case ASSERT_LEVEL is >= 2 or one will get a nonsense result that may
lead to a heap-buffer-overflow/underflow. The latter has happened in
ticket #8248 which this commit fixes.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-10-09 16:38:28 +02:00
Marton Balint
7f3a946216 Revert "avfilter/vf_minterpolate: if metadata lavfi.scd.mafd exists, we'll use it first" 
This reverts commit d88e1c9838.

Fixes null pointer dereference.

Signed-off-by: Marton Balint <cus@passwd.hu>
 2020-05-15 18:35:51 +02:00
Limin Wang
815a3b393c 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>
 2020-05-14 23:03:07 +08:00
Limin Wang
61cc009d53 avfilter/vf_minterpolate: correct the mafd calculation 
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
 2020-05-14 23:03:07 +08:00
Limin Wang
d88e1c9838 avfilter/vf_minterpolate: if metadata lavfi.scd.mafd exists, we'll use it first 
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
 2020-05-14 23:03:07 +08:00
Carl Eugen Hoyos
21dd05ee6a lavfi/minterpolate: Remove declaration of two unused variables. 2018-11-16 21:45:49 +01:00
Marton Balint
936d18fb42 avfilter/vf_minterpolate: use common scene sad functions 
Signed-off-by: Marton Balint <cus@passwd.hu>
 2018-11-11 20:30:50 +01:00
Jun Zhao
eb776a16ea lavfi/minterpolate: fix blending calc issue. 
the right blending calc is:
(alpha * Frame_2 + (MAX - alpha) * Frame_1 + 512) >> 10

Signed-off-by: Jun Zhao <mypopydev@gmail.com>
 2018-07-08 23:05:34 +08:00
Carl Eugen Hoyos
ad73b32d29 lavfi/minterpolate: Split struct Pixel to allow higher resolutions. 
Raises the maximum resolution from 2716x2707 to approximately 4096x4095.

Fixes ticket #6795.
 2017-12-28 01:28:57 +01:00
Michael Niedermayer
855305fac2 avfilter/vf_minterpolate: Use dx and dy 
Fixes CID1396283 and CID1396284

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-03-30 22:46:31 +02:00
Carl Eugen Hoyos
350ce0b9d3 lavfi/minterpolate: Remove an unused variable. 2017-02-11 16:38:56 +01:00
Davinder Singh
367577dbe2 avfilter/vf_minterpolate: rename chroma log vars 
also use AVPixFmtDescriptor instead of avcodec_get_chroma_sub_sample()
for log2_chroma*.
 2016-09-02 13:08:21 +02:00
Davinder Singh
11a631d4a7 avfilter/vf_minterpolate: do not right shift negative numbers 
It was source of crashes. Use division instead.

Original patch by author. Log message by comitter.
 2016-08-29 17:32:47 +02:00
Davinder Singh
b07d4a0fb2 avfilter: added motion estimation and interpolation filters 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-08-26 11:17:51 +02:00