Seemingly, these can not be changed runtime, which kills our strategy
entirely for the lowest presets. Thus, these (unfortunately!) have to go;
they had no actual effect.
One _can_ set B-frame bias to -90, which gives much of the same effect,
but this is only picked up during reconfig if we have --sync-lookahead 0,
which seems to be much slower, so that won't really help either.
my $ssim_mode = 1;
my $output_cpp = 1;
my $flags = "--bitrate 4000 --frames 1000";
my $ssim_mode = 1;
my $output_cpp = 1;
my $flags = "--bitrate 4000 --frames 1000";
-my $override_flags = "--weightp 1 --mbtree --rc-lookahead 20";
+my $override_flags = "--weightp 1 --mbtree --rc-lookahead 20 --b-adapt 1 --bframes 3";
my $file = "elephants_dream_1080p24.y4m"; # https://media.xiph.org/video/derf/y4m/elephants_dream_1080p24.y4m
if ($ssim_mode) {
my $file = "elephants_dream_1080p24.y4m"; # https://media.xiph.org/video/derf/y4m/elephants_dream_1080p24.y4m
if ($ssim_mode) {
push @partitions, 'P4' if ($partitions_hex & 0x0020);
my $partitions = join('|', @partitions);
push @partitions, 'P4' if ($partitions_hex & 0x0020);
my $partitions = join('|', @partitions);
- $raw =~ /bframes=(\d+)/ or die;
- my $bframes = $1;
-
- my ($badapt, $direct);
- if ($bframes > 0) {
- $raw =~ /b_adapt=(\d+)/ or die;
- $badapt = $1;
- $raw =~ /direct=(\d+)/ or die;
- $direct = $1;
- } else {
- $badapt = $direct = 0;
- }
+ $raw =~ /direct=(\d+)/ or die;
+ my $direct = $1;
$raw =~ /me_range=(\d+)/ or die;
my $merange = $1;
print "\n";
print "\t// Preset $preset_num: ${ssim}db, $preset\n";
$raw =~ /me_range=(\d+)/ or die;
my $merange = $1;
print "\n";
print "\t// Preset $preset_num: ${ssim}db, $preset\n";
- print "\t{ .time= 0.000, .subme=$subme, .me=$me, .refs=$refs, .mix=$mix, .trellis=$trellis, .partitions=$partitions, .badapt=$badapt, .bframes=$bframes, .direct=$direct, .merange=$merange },\n";
+ print "\t{ .time= 0.000, .subme=$subme, .me=$me, .refs=$refs, .mix=$mix, .trellis=$trellis, .partitions=$partitions, .direct=$direct, .merange=$merange },\n";
#x264 - core 148 r2705 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=34 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
}
#x264 - core 148 r2705 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=34 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
}
---preset superfast --b-adapt 0 --bframes 0
--preset superfast
--preset superfast --subme 2
--preset veryfast
--preset superfast
--preset superfast --subme 2
--preset veryfast
--preset medium --subme 8 --trellis 2
--preset medium --subme 8 --trellis 2 --direct auto
--preset slow
--preset medium --subme 8 --trellis 2
--preset medium --subme 8 --trellis 2 --direct auto
--preset slow
---preset slow --b-adapt 2 --subme 9
---preset slow --b-adapt 2 --subme 9 --me umh
---preset slow --b-adapt 2 --subme 9 --me umh --ref 6
---preset slow --b-adapt 2 --subme 9 --me umh --ref 7
+--preset slow --subme 9
+--preset slow --subme 9 --me umh
+--preset slow --subme 9 --me umh --ref 6
+--preset slow --subme 9 --me umh --ref 7
--preset slower
--preset slower --subme 10
--preset slower
--preset slower --subme 10
---preset slower --subme 10 --bframes 8
using namespace std;
using namespace std::chrono;
using namespace std;
using namespace std::chrono;
X264SpeedControl::X264SpeedControl(x264_t *x264, float f_speed, int i_buffer_size, float f_buffer_init)
: dyn(load_x264_for_bit_depth(global_flags.x264_bit_depth)),
X264SpeedControl::X264SpeedControl(x264_t *x264, float f_speed, int i_buffer_size, float f_buffer_init)
: dyn(load_x264_for_bit_depth(global_flags.x264_bit_depth)),
int mix;
int trellis;
int partitions;
int mix;
int trellis;
int partitions;
- int badapt;
- int bframes;
int direct;
int merange;
} sc_preset_t;
// The actual presets, including the equivalent commandline options. Note that
// all presets are benchmarked with --weightp 1 --mbtree --rc-lookahead 20
int direct;
int merange;
} sc_preset_t;
// The actual presets, including the equivalent commandline options. Note that
// all presets are benchmarked with --weightp 1 --mbtree --rc-lookahead 20
-// on top of the given settings (equivalent settings to the "faster" preset).
-// Timings and SSIM measurements were done on a quadcore Haswell i5 3.2 GHz
-// on the first 1000 frames of "Elephants Dream" in 1080p.
-// See experiments/measure-x264.pl for a way to reproduce.
+// --b-adapt 1 --bframes 3 on top of the given settings (equivalent settings to
+// the "faster" preset). Timings and SSIM measurements were done on a four cores
+// of a 6-core Coffee Lake i5 2.8 GHz on the first 1000 frames of “Elephants
+// Dream” in 1080p. See experiments/measure-x264.pl for a way to reproduce.
//
// Note that the two first and the two last are also used for extrapolation
// should the desired time be outside the range. Thus, it is disadvantageous if
//
// Note that the two first and the two last are also used for extrapolation
// should the desired time be outside the range. Thus, it is disadvantageous if
#define P4 X264_ANALYSE_PSUB8x8
#define P8 X264_ANALYSE_PSUB16x16
#define B8 X264_ANALYSE_BSUB16x16
#define P4 X264_ANALYSE_PSUB8x8
#define P8 X264_ANALYSE_PSUB16x16
#define B8 X264_ANALYSE_BSUB16x16
- // Preset 0: 16.583db, --preset superfast --b-adapt 0 --bframes 0
- { .time= 1.000, .subme=1, .me=X264_ME_DIA, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4, .badapt=0, .bframes=0, .direct=0, .merange=16 },
- // Preset 1: 17.386db, --preset superfast
- { .time= 1.288, .subme=1, .me=X264_ME_DIA, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 0: 17.386db, --preset superfast
+ { .time= 1.000, .subme=1, .me=X264_ME_DIA, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4, .direct=1, .merange=16 },
- // Preset 2: 17.919db, --preset superfast --subme 2
- { .time= 2.231, .subme=2, .me=X264_ME_DIA, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 1: 17.919db, --preset superfast --subme 2
+ { .time= 1.707, .subme=2, .me=X264_ME_DIA, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4, .direct=1, .merange=16 },
- // Preset 3: 18.051db, --preset veryfast
- { .time= 2.403, .subme=2, .me=X264_ME_HEX, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 2: 18.051db, --preset veryfast
+ { .time= 1.832, .subme=2, .me=X264_ME_HEX, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 4: 18.422db, --preset veryfast --subme 3
- { .time= 2.636, .subme=3, .me=X264_ME_HEX, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 3: 18.422db, --preset veryfast --subme 3
+ { .time= 1.853, .subme=3, .me=X264_ME_HEX, .refs=1, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 5: 18.514db, --preset veryfast --subme 3 --ref 2
- { .time= 2.844, .subme=3, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 4: 18.514db, --preset veryfast --subme 3 --ref 2
+ { .time= 1.925, .subme=3, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 6: 18.564db, --preset veryfast --subme 4 --ref 2
- { .time= 3.366, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 5: 18.564db, --preset veryfast --subme 4 --ref 2
+ { .time= 2.111, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=0, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 7: 18.411db, --preset faster
- { .time= 3.450, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 6: 18.411db, --preset faster
+ { .time= 2.240, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=0, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 8: 18.429db, --preset faster --mixed-refs
- { .time= 3.701, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 7: 18.429db, --preset faster --mixed-refs
+ { .time= 2.414, .subme=4, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 9: 18.454db, --preset faster --mixed-refs --subme 5
- { .time= 4.297, .subme=5, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 8: 18.454db, --preset faster --mixed-refs --subme 5
+ { .time= 2.888, .subme=5, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 10: 18.528db, --preset fast
- { .time= 5.181, .subme=6, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 9: 18.528db, --preset fast
+ { .time= 3.570, .subme=6, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 11: 18.762db, --preset fast --subme 7
- { .time= 5.357, .subme=7, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 10: 18.762db, --preset fast --subme 7
+ { .time= 3.698, .subme=7, .me=X264_ME_HEX, .refs=2, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 12: 18.819db, --preset medium
- { .time= 6.040, .subme=7, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 11: 18.819db, --preset medium
+ { .time= 4.174, .subme=7, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 13: 18.889db, --preset medium --subme 8
- { .time= 7.408, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 12: 18.889db, --preset medium --subme 8
+ { .time= 5.155, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=1, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 14: 19.127db, --preset medium --subme 8 --trellis 2
- { .time=10.124, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=1, .merange=16 },
+ // Preset 13: 19.127db, --preset medium --subme 8 --trellis 2
+ { .time= 7.237, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=1, .merange=16 },
- // Preset 15: 19.118db, --preset medium --subme 8 --trellis 2 --direct auto
- { .time=10.144, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=3, .merange=16 },
+ // Preset 14: 19.118db, --preset medium --subme 8 --trellis 2 --direct auto
+ { .time= 7.240, .subme=8, .me=X264_ME_HEX, .refs=3, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 16: 19.172db, --preset slow
- { .time=11.142, .subme=8, .me=X264_ME_HEX, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=1, .bframes=3, .direct=3, .merange=16 },
+ // Preset 15: 19.172db, --preset slow
+ { .time= 7.910, .subme=8, .me=X264_ME_HEX, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 17: 19.309db, --preset slow --b-adapt 2 --subme 9
- { .time=11.168, .subme=9, .me=X264_ME_HEX, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 16: 19.208db, --preset slow --subme 9
+ { .time= 8.091, .subme=9, .me=X264_ME_HEX, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 18: 19.316db, --preset slow --b-adapt 2 --subme 9 --me umh
- { .time=12.942, .subme=9, .me=X264_ME_UMH, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 17: 19.216db, --preset slow --subme 9 --me umh
+ { .time= 9.539, .subme=9, .me=X264_ME_UMH, .refs=5, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 19: 19.342db, --preset slow --b-adapt 2 --subme 9 --me umh --ref 6
- { .time=14.302, .subme=9, .me=X264_ME_UMH, .refs=6, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 18: 19.253db, --preset slow --subme 9 --me umh --ref 6
+ { .time=10.521, .subme=9, .me=X264_ME_UMH, .refs=6, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 20: 19.365db, --preset slow --b-adapt 2 --subme 9 --me umh --ref 7
- { .time=15.554, .subme=9, .me=X264_ME_UMH, .refs=7, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 19: 19.275db, --preset slow --subme 9 --me umh --ref 7
+ { .time=11.461, .subme=9, .me=X264_ME_UMH, .refs=7, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8, .direct=3, .merange=16 },
- // Preset 21: 19.396db, --preset slower
- { .time=17.551, .subme=9, .me=X264_ME_UMH, .refs=8, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 20: 19.314db, --preset slower
+ { .time=13.145, .subme=9, .me=X264_ME_UMH, .refs=8, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .direct=3, .merange=16 },
- // Preset 22: 19.491db, --preset slower --subme 10
- { .time=21.321, .subme=10, .me=X264_ME_UMH, .refs=8, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .badapt=2, .bframes=3, .direct=3, .merange=16 },
+ // Preset 21: 19.407db, --preset slower --subme 10
+ { .time=16.386, .subme=10, .me=X264_ME_UMH, .refs=8, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .direct=3, .merange=16 },
- // Preset 23: 19.764db, --preset slower --subme 10 --bframes 8
- { .time=23.200, .subme=10, .me=X264_ME_UMH, .refs=8, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .badapt=2, .bframes=8, .direct=3, .merange=16 },
+ // Preset 22: 19.483db, --preset veryslow
+ { .time=26.861, .subme=10, .me=X264_ME_UMH, .refs=16, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .direct=3, .merange=24 },
- // Preset 24: 19.807db, --preset veryslow
- { .time=36.922, .subme=10, .me=X264_ME_UMH, .refs=16, .mix=1, .trellis=2, .partitions=I8|I4|P8|B8|P4, .badapt=2, .bframes=8, .direct=3, .merange=24 },
#undef I4
#undef I8
#undef P4
#undef I4
#undef I8
#undef P4
dyn.x264_encoder_parameters(x264, &p);
p.i_frame_reference = s->refs;
dyn.x264_encoder_parameters(x264, &p);
p.i_frame_reference = s->refs;
- p.i_bframe_adaptive = s->badapt;
- p.i_bframe = s->bframes;
p.analyse.inter = s->partitions;
p.analyse.i_subpel_refine = s->subme;
p.analyse.i_me_method = s->me;
p.analyse.inter = s->partitions;
p.analyse.i_subpel_refine = s->subme;
p.analyse.i_me_method = s->me;