)]}'
{
  "commit": "5c207296f656db44af6796c1c93b2d7b0ae7fbbb",
  "tree": "e165da5d968534a15ac98d69afdfa81cc4138418",
  "parents": [
    "d9ad054e96679607cc412e28045a2e8891456879"
  ],
  "author": {
    "name": "Yushin Cho",
    "email": "ycho@mozilla.com",
    "time": "Thu Feb 16 15:01:33 2017 -0800"
  },
  "committer": {
    "name": "Yushin Cho",
    "email": "ycho@mozilla.com",
    "time": "Fri Feb 17 18:12:19 2017 +0000"
  },
  "message": "Remove PVQ_CHROMA_RD codes\n\nWhich was a workaround to balance the quality between\nluma and chroma when PVQ is enabled, by\n1) skipping PVQ DC RDO for chroma and\n2) using smaller lambda value (x0.5) for intra prediction of chroma,\nintended to spend more bits and thus improve quality for chroma.\n\nThe change in metric for 5 frames of objective-1-fast is:\nPSNR  PSNR-HVS  SSIM  CIEDE-2000  PSNR Cb PSNR Cr  MS-SSIM\n-1.45 -1.54     -1.46 4.62        13.71   14.87     -1.47\n\nFor still images (subset1)\nPSNR  PSNR-HVS  SSIM  CIEDE-2000  PSNR Cb PSNR Cr  MS-SSIM VMAF\n-1.52 -1.54     -1.60 2.56        11.92   12.17     -1.52  -1.66\n\nChange-Id: I31c4d7a7de2939f6004c112649f7303f0e944156\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "5f4e981e9b706b72dd016157756239292b5c70a5",
      "old_mode": 33188,
      "old_path": "av1/encoder/encodemb.c",
      "new_id": "7de97d9b78b7e0c06641c38008911a564040346c",
      "new_mode": 33188,
      "new_path": "av1/encoder/encodemb.c"
    },
    {
      "type": "modify",
      "old_id": "e4b9febf9b99d01bf116d550313ecf9667db8cbe",
      "old_mode": 33188,
      "old_path": "av1/encoder/pvq_encoder.c",
      "new_id": "7ba5762317fef3363a89192780d2c7d14317f3ed",
      "new_mode": 33188,
      "new_path": "av1/encoder/pvq_encoder.c"
    },
    {
      "type": "modify",
      "old_id": "f826667eafea08bf729662780cbd880a7dfd28f2",
      "old_mode": 33188,
      "old_path": "av1/encoder/pvq_encoder.h",
      "new_id": "90231023f369e92684686bc07beb948984f583fb",
      "new_mode": 33188,
      "new_path": "av1/encoder/pvq_encoder.h"
    },
    {
      "type": "modify",
      "old_id": "1320568106536f39e8aacc7eb0b2d751ed58f9ab",
      "old_mode": 33188,
      "old_path": "av1/encoder/rdopt.c",
      "new_id": "8717c0c644be8b9fc1053a34d279c9c8b7401b92",
      "new_mode": 33188,
      "new_path": "av1/encoder/rdopt.c"
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  ]
}