)]}'
{
  "commit": "30d129dfac8e0977a6b1664c0badbdad31e4ba56",
  "tree": "5b6edde6cae0d5ac8db804222347384de2a6372b",
  "parents": [
    "8efbd34a3cb503dea8ec5566cda75ca723a95c61",
    "d9c115ce0951324dee243041ef810e27202de20f"
  ],
  "author": {
    "name": "Wan-Teh Chang",
    "email": "wtc@google.com",
    "time": "Wed Sep 03 09:24:02 2025 -0700"
  },
  "committer": {
    "name": "Wan-Teh Chang",
    "email": "wtc@google.com",
    "time": "Wed Sep 03 09:37:25 2025 -0700"
  },
  "message": "Merge tag \u0027v3.13.0\u0027 into main\n\nRelease v3.13.0 Opaline\n\n2025-09-02 v3.13.0\n  This release is ABI compatible with the last release.\n\n  The aom_roi_map_t struct, used only by the codec control\n  AOME_SET_ROI_MAP, was modified in this release. Since AOME_SET_ROI_MAP\n  was unimplemented, aom_roi_map_t was effectively an unused struct.\n  Therefore aom_roi_map_t is to be considered as a new struct added in\n  this release and this change does not break ABI compatibility.\n\n  - New Features\n    * New tuning mode AOM_TUNE_SSIMULACRA2 for the AOME_SET_TUNING codec\n      control (--tune\u003dssimulacra2) in all-intra mode. The feature\n      detection macro AOM_HAVE_TUNE_SSIMULACRA2, if defined, indicates\n      that AOM_TUNE_SSIMULACRA2 is available. AOM_TUNE_SSIMULACRA2 was\n      developed to maximize SSIMULACRA 2 scores.\n    * New codec control AV1E_SET_SCREEN_CONTENT_DETECTION_MODE\n      (--screen-detection-mode).\n      This codec control helps select between two screen detection modes:\n       * Mode 1: standard (default)\n       * Mode 2: anti-aliased text and graphics aware\n    * New codec control AV1E_SET_ENABLE_ADAPTIVE_SHARPNESS\n      (--enable-adaptive-sharpness). When enabled, it modulates sharpness\n      based on frame QP, which helps mitigate blocking artifacts in the\n      low to medium quality range.\n    * Added low complexity decode mode for 720p vertical videos.\n    * ROI feature implemented for RTC: for delta QP, skip encoding, and\n      reference selection.\n    * External scaling feature for SVC: allow downscaled images to be\n      passed into encoder for spatial layers without reconfiguring it.\n    * Allow per-frame calculation of PSNR (contribution from Meta).\n\n  - Compression Efficiency Improvements\n    * Variance Boost is now enabled for tuning modes AOM_TUNE_IQ and\n      AOM_TUNE_SSIMULACRA2 at speeds 8 and 9 (2-5% SSIMULACRA 2 BD-Rate\n      gains)\n    * Several quality/time tradeoff improvements and bug fixes for all\n      intra mode speeds 8 and 9.\n      * Up to 6.9% SSIMULACRA 2 BD-Rate gains for speed 8\n      * Up to 2.2% SSIMULACRA 2 BD-Rate gains for speed 9\n\n  - Perceptual Quality Improvements\n    * RTC: Visual quality improvements for screen content mode.\n    * RTC: Visual quality improvements for video mode for resolutions \u003e\u003d\n      720p.\n\n  - Speedups\n    * Optimize intraBC search for better speed/efficiency tradeoffs for\n      all intra mode speeds \u003e\u003d 1\n    * Optimize intraBC block hashing process\n    * RTC Screen: speed feature added to speed 12 for ~2x speedup on\n      slide/scene changes, for resolutions \u003e\u003d 720p.\n    * ML based speedup improvement on the partition pruning for speed \u003c\u003d 2\n\n  - Other Improvements\n    * Fixes for RPS (reference picture selection) for RTC: Based on\n      av1_discuss issue:\n      https://groups.google.com/a/aomedia.org/g/av1-discuss/c/sqFad980SsA\n\n  - Bug Fixes\n    * b:421196988: all intra speed 8: overuse of palette mode\n      unnecessarily inflating file sizes\n    * b:423804955: Improve quality for 4K Screencast\n    * webrtc:388070060: Allow per-frame calculation of PSNR\n    * b:433046392, b:432035817: Fix to SVC crash triggered with Jitsi\n      video conference app.\n    * b:419622699: Fix integer overflow in update_buffer_level\n    * b:407813259: Fix to update seq_params for number of layers change\n    * b:400885218: External scaling for AV1\n    * b:391849810: High AV1 frame encode time on slide changes\n    * b:399575647: Too aggressive QP backoff at scene changes\n    * b:383306740: Quality degradation at horizontal scrolling\n\nBug: 441135035\nChange-Id: I205cbdbe1bdcfae8e1dbb431c72ce9ae82cb7c61\n",
  "tree_diff": []
}