)]}'
{
  "commit": "63fd24e3f8dfaf0b956fb0d5787155edaef33be3",
  "tree": "5c672bb9a4d1f090f81fa0c8cc048ee13c8604ff",
  "parents": [
    "aa6a1b0914a2bdb5c41539697aa4cff4fb1af161"
  ],
  "author": {
    "name": "Sai Deng",
    "email": "sdeng@google.com",
    "time": "Thu Sep 17 15:24:29 2020 -0700"
  },
  "committer": {
    "name": "Debargha Mukherjee",
    "email": "debargha@google.com",
    "time": "Sat Sep 26 19:44:30 2020 +0000"
  },
  "message": "Add variance based pre-processing parameter selection\n\nTaking into account the variance change to predict the vmaf_neg\ndistortions during pre-processing stage, this CL improves BD-rate of all\ncore metrics in mode tune\u003dvmaf_neg:\n\n                 PSNR   SSIM   VMAF   VMAF_NEG\nmidres          -1.22  -0.56   0.68     -0.54\nhdres           -0.96  -0.94   1.02     -0.50\nlowres_10bd     -2.70  -1.37   1.64     -1.16\nmidres_10bd     -1.99  -0.90   2.25     -0.64\n\nChange-Id: I45db6a2ed53972b42cb58ee525c09f54e421970e\n(cherry picked from commit 282fad4cb3deec8157d335c563b87395d1eb8ae2)\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "636aa646426ae9447144200de4be5b1e6279e84f",
      "old_mode": 33188,
      "old_path": "aom_dsp/vmaf.c",
      "new_id": "531baf5eb3e0fb10bf633403cc903f1dc446b00d",
      "new_mode": 33188,
      "new_path": "aom_dsp/vmaf.c"
    },
    {
      "type": "modify",
      "old_id": "86e7958e22850b609da21f67905149d541830a1d",
      "old_mode": 33188,
      "old_path": "av1/encoder/encode_strategy.c",
      "new_id": "0f9f2e66b02ff1f830e75ad5b8963430cb9ef21c",
      "new_mode": 33188,
      "new_path": "av1/encoder/encode_strategy.c"
    },
    {
      "type": "modify",
      "old_id": "08c3d4ef71651d042031876521abd747e97a02e5",
      "old_mode": 33188,
      "old_path": "av1/encoder/tune_vmaf.c",
      "new_id": "bbb1ff881144d9404c8871323cda01a4e084d691",
      "new_mode": 33188,
      "new_path": "av1/encoder/tune_vmaf.c"
    },
    {
      "type": "modify",
      "old_id": "c71fee58f1235a0fdc7afb6829704bce995b6f3e",
      "old_mode": 33188,
      "old_path": "av1/encoder/tune_vmaf.h",
      "new_id": "6536df2f7af2caaa59cd84f2e3058d11a2676b6d",
      "new_mode": 33188,
      "new_path": "av1/encoder/tune_vmaf.h"
    }
  ]
}