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example1
example1
 
 
example2
example2
 
 
example3
example3
 
 
example4
example4
 
 
.gitignore
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chart.svg
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encode.sh
encode.sh
 
 
readme.md
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AVIF quality comparison

example1/original.jpg • credits: Jeff Sheldon, via Unsplash

example2/original.jpg • credits: note thanun, via Unsplash

example3/original.jpg • credits: hao wang, via Unsplash

example4/original.png • credits: macrovector, via freepik

AVIF convert

Running the script encode.sh encodes original images to q-$q.avif files, where $q is a variable for setting cq-level parameter.

The command is the following:

avifenc -j all --min 0 --max 63 --minalpha 0 --maxalpha 63 -a end-usage=q -a cq-level=$q -a tune=ssim original.jpg q-$q.avif

Where the parameters are:

  • -a cq-level=$q: Constant Quality level. Value can be from 0-63. Lower values mean better quality and greater file size.
  • -j all: Number of jobs (worker threads, all uses all available cores).
  • --min 0: Min quantizer for color (0-63).
  • --max 63: Max quantizer for color (0-63).
  • --minalpha 0: Min quantizer for alpha (0-63).
  • --maxalpha 63: Max quantizer for alpha (0-63).
  • -a end-usage=q Rate control mode set to Constant Quality mode.
  • -a tune=ssim: SSIM as tune the encoder for distortion metric.

DSSIM

Compiled Kornel Lesiński's dssim library with AVIF support:

  1. git clone https://github.com/kornelski/dssim.git /tmp/dssim
  2. cargo build --release --features avif --manifest-path /tmp/dssim/Cargo.toml
  3. /tmp/dssim/target/release/dssim example1/original.jpg example1/*.avif
  4. /tmp/dssim/target/release/dssim example2/original.jpg example2/*.avif
  5. /tmp/dssim/target/release/dssim example3/original.jpg example3/*.avif
  6. /tmp/dssim/target/release/dssim example4/original.png example4/*.avif

The tool calculated each avif file dissimilarity from the original images.

Results

chart

File E1 size E1 size% E1 DSSIM E2 size E2 size% E2 DSSIM E3 size E3 size% E3 DSSIM E4 size E4 size% E4 DSSIM
original.jpg 1,832,862 100.00% 0.00000000 3,440,017 100.00% 0.00000000 2,020,087 100.00% 0.00000000 2,501,936 100.00% 0.00000000
q-0.avif 5,608,016 305.97% 0.00017465 9,219,013 267.99% 0.00006591 5,256,395 260.21% 0.00019494 1,940,541 77.56% 0.00001695
q-1.avif 2,350,808 128.26% 0.00019948 4,859,779 141.27% 0.00009589 2,886,003 142.87% 0.00021186 1,041,235 41.62% 0.00002756
q-2.avif 2,137,542 116.62% 0.00021586 4,238,474 123.21% 0.00011543 2,482,796 122.91% 0.00022589 785,814 31.41% 0.00003294
q-3.avif 1,996,515 108.93% 0.00023554 3,938,260 114.48% 0.00014014 2,200,418 108.93% 0.00024497 624,078 24.94% 0.00003908
q-4.avif 1,840,268 100.40% 0.00026059 3,685,180 107.13% 0.00015821 1,994,946 98.76% 0.00026460 528,268 21.11% 0.00004491
q-5.avif 1,756,577 95.84% 0.00031036 3,562,627 103.56% 0.00020261 1,834,495 90.81% 0.00030249 450,637 18.01% 0.00005130
q-6.avif 1,658,133 90.47% 0.00035917 3,435,751 99.88% 0.00024606 1,685,859 83.45% 0.00034150 398,980 15.95% 0.00005724
q-7.avif 1,536,763 83.84% 0.00043921 3,262,133 94.83% 0.00028608 1,542,511 76.36% 0.00040194 352,008 14.07% 0.00006148
q-8.avif 1,440,293 78.58% 0.00049170 3,151,035 91.60% 0.00032102 1,439,774 71.27% 0.00043619 319,914 12.79% 0.00006676
q-9.avif 1,340,917 73.16% 0.00056366 3,053,867 88.77% 0.00037296 1,329,391 65.81% 0.00048589 288,707 11.54% 0.00007286
q-10.avif 1,256,395 68.55% 0.00064390 2,930,470 85.19% 0.00044769 1,241,566 61.46% 0.00053314 267,311 10.68% 0.00007783
q-11.avif 1,180,902 64.43% 0.00071756 2,830,000 82.27% 0.00050667 1,165,886 57.71% 0.00057728 248,783 9.94% 0.00008381
q-12.avif 1,097,950 59.90% 0.00080692 2,713,799 78.89% 0.00058358 1,087,733 53.85% 0.00062803 229,339 9.17% 0.00009037
q-13.avif 1,033,989 56.41% 0.00089085 2,628,864 76.42% 0.00067323 1,025,966 50.79% 0.00067557 214,944 8.59% 0.00009676
q-14.avif 971,522 53.01% 0.00097779 2,534,595 73.68% 0.00077245 967,005 47.87% 0.00072505 202,290 8.09% 0.00010132
q-15.avif 922,275 50.32% 0.00104488 2,454,398 71.35% 0.00085579 914,591 45.27% 0.00077114 191,653 7.66% 0.00010748
q-16.avif 871,687 47.56% 0.00113375 2,369,029 68.87% 0.00095177 859,189 42.53% 0.00082935 178,643 7.14% 0.00011546
q-17.avif 829,122 45.24% 0.00121831 2,274,503 66.12% 0.00107020 812,992 40.25% 0.00088383 170,158 6.80% 0.00012184
q-18.avif 789,807 43.09% 0.00130430 2,185,941 63.54% 0.00117705 772,375 38.23% 0.00093417 161,804 6.47% 0.00012772
q-19.avif 753,032 41.09% 0.00139719 2,115,022 61.48% 0.00128848 735,986 36.43% 0.00098242 154,716 6.18% 0.00013361
q-20.avif 711,184 38.80% 0.00149934 2,036,493 59.20% 0.00141220 696,047 34.46% 0.00105446 146,741 5.87% 0.00013954
q-21.avif 676,658 36.92% 0.00158142 1,960,429 56.99% 0.00153544 664,001 32.87% 0.00110076 140,872 5.63% 0.00014732
q-22.avif 645,535 35.22% 0.00166758 1,890,671 54.96% 0.00159035 635,246 31.45% 0.00114810 131,727 5.27% 0.00014521
q-23.avif 616,962 33.66% 0.00175660 1,823,060 53.00% 0.00169885 608,589 30.13% 0.00119827 126,395 5.05% 0.00015534
q-24.avif 581,818 31.74% 0.00187211 1,737,401 50.51% 0.00184523 578,421 28.63% 0.00125907 120,622 4.82% 0.00016189
q-25.avif 534,676 29.17% 0.00205190 1,618,010 47.03% 0.00205697 535,123 26.49% 0.00135154 113,188 4.52% 0.00017352
q-26.avif 487,690 26.61% 0.00226419 1,511,506 43.94% 0.00229647 497,876 24.65% 0.00145160 106,112 4.24% 0.00018602
q-27.avif 443,017 24.17% 0.00247434 1,401,255 40.73% 0.00253112 465,388 23.04% 0.00154683 99,702 3.98% 0.00019783
q-28.avif 402,114 21.94% 0.00270015 1,298,599 37.75% 0.00276959 437,223 21.64% 0.00163895 94,686 3.78% 0.00021174
q-29.avif 367,356 20.04% 0.00291583 1,198,954 34.85% 0.00302583 412,093 20.40% 0.00174122 90,326 3.61% 0.00022412
q-30.avif 337,005 18.39% 0.00313155 1,117,114 32.47% 0.00325541 389,844 19.30% 0.00183682 86,488 3.46% 0.00023649
q-31.avif 301,197 16.43% 0.00342845 1,017,633 29.58% 0.00362253 361,602 17.90% 0.00198315 81,210 3.25% 0.00025491
q-32.avif 270,442 14.76% 0.00371780 926,087 26.92% 0.00397932 335,529 16.61% 0.00212805 75,974 3.04% 0.00027206
q-33.avif 246,250 13.44% 0.00400157 852,123 24.77% 0.00433724 314,858 15.59% 0.00227105 72,657 2.90% 0.00029220
q-34.avif 225,048 12.28% 0.00426077 789,622 22.95% 0.00469546 297,009 14.70% 0.00242082 69,090 2.76% 0.00030875
q-35.avif 203,975 11.13% 0.00458198 723,488 21.03% 0.00514863 277,218 13.72% 0.00260518 65,230 2.61% 0.00033194
q-36.avif 184,942 10.09% 0.00491412 666,787 19.38% 0.00561515 257,978 12.77% 0.00281794 61,919 2.47% 0.00035858
q-37.avif 169,804 9.26% 0.00523421 620,487 18.04% 0.00607538 243,355 12.05% 0.00301268 58,839 2.35% 0.00038112
q-38.avif 154,956 8.45% 0.00563911 575,994 16.74% 0.00660038 227,742 11.27% 0.00327889 55,823 2.23% 0.00041282
q-39.avif 141,909 7.74% 0.00598582 535,822 15.58% 0.00717691 213,268 10.56% 0.00351862 53,038 2.12% 0.00044519
q-40.avif 131,204 7.16% 0.00633243 501,285 14.57% 0.00775435 200,492 9.92% 0.00376308 50,412 2.01% 0.00047721
q-41.avif 120,275 6.56% 0.00673911 466,437 13.56% 0.00844514 187,767 9.29% 0.00406272 47,909 1.91% 0.00051464
q-42.avif 111,408 6.08% 0.00711019 437,344 12.71% 0.00912211 177,298 8.78% 0.00434587 45,719 1.83% 0.00054468
q-43.avif 102,903 5.61% 0.00756085 407,543 11.85% 0.00992430 166,036 8.22% 0.00469760 43,588 1.74% 0.00059828
q-44.avif 95,669 5.22% 0.00798461 382,112 11.11% 0.01073139 156,492 7.75% 0.00506330 41,712 1.67% 0.00063323
q-45.avif 88,190 4.81% 0.00846126 356,893 10.37% 0.01168044 147,110 7.28% 0.00544948 39,843 1.59% 0.00069217
q-46.avif 81,671 4.46% 0.00895592 333,334 9.69% 0.01269146 138,500 6.86% 0.00591325 38,305 1.53% 0.00074152
q-47.avif 75,825 4.14% 0.00956686 312,619 9.09% 0.01372644 130,581 6.46% 0.00637055 36,605 1.46% 0.00079964
q-48.avif 70,397 3.84% 0.01012459 292,021 8.49% 0.01490846 122,274 6.05% 0.00689154 35,078 1.40% 0.00089081
q-49.avif 65,094 3.55% 0.01070428 272,833 7.93% 0.01622062 115,063 5.70% 0.00748383 33,608 1.34% 0.00096179
q-50.avif 60,194 3.28% 0.01132495 255,223 7.42% 0.01757990 108,643 5.38% 0.00807132 32,227 1.29% 0.00104929
q-51.avif 55,316 3.02% 0.01207977 238,444 6.93% 0.01909053 102,199 5.06% 0.00871745 30,952 1.24% 0.00115343
q-52.avif 51,205 2.79% 0.01276578 222,697 6.47% 0.02080486 96,030 4.75% 0.00946788 29,581 1.18% 0.00122032
q-53.avif 47,094 2.57% 0.01361508 207,007 6.02% 0.02268777 89,965 4.45% 0.01035214 28,508 1.14% 0.00132629
q-54.avif 43,258 2.36% 0.01451707 192,636 5.60% 0.02473018 84,358 4.18% 0.01126440 27,320 1.09% 0.00144504
q-55.avif 39,640 2.16% 0.01546033 177,709 5.17% 0.02713804 78,753 3.90% 0.01232024 26,332 1.05% 0.00156221
q-56.avif 36,188 1.97% 0.01653103 163,094 4.74% 0.03000666 73,714 3.65% 0.01357462 25,295 1.01% 0.00171353
q-57.avif 32,856 1.79% 0.01788240 148,790 4.33% 0.03326768 68,409 3.39% 0.01511803 24,138 0.96% 0.00190282
q-58.avif 29,384 1.60% 0.01945924 134,026 3.90% 0.03735460 62,902 3.11% 0.01715196 23,054 0.92% 0.00219556
q-59.avif 26,385 1.44% 0.02129385 119,241 3.47% 0.04237454 57,413 2.84% 0.01963627 21,939 0.88% 0.00250446
q-60.avif 23,407 1.28% 0.02317474 104,058 3.02% 0.04863330 52,354 2.59% 0.02287584 20,573 0.82% 0.00287790
q-61.avif 20,464 1.12% 0.02582241 90,311 2.63% 0.05624411 46,953 2.32% 0.02728882 19,480 0.78% 0.00353268
q-62.avif 16,915 0.92% 0.02993757 74,304 2.16% 0.06758287 39,874 1.97% 0.03595811 17,822 0.71% 0.00446529
q-63.avif 13,218 0.72% 0.03720529 55,747 1.62% 0.08783640 31,609 1.56% 0.05285349 16,060 0.64% 0.00656578

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AVIF SSIM

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