)]}' { "commit": "6b972e9981ed40d3e74c8a7cfca530892016870d", "tree": "0c018d28e48ff5d644299261472d2e4586bea3a1", "parents": [ "5e7550dcf800cf0e277b226665d85ea12e711f71", "fc430c57c7b0307b4c5ffb686cd90b3c010d08d2" ], "author": { "name": "Wan-Teh Chang", "email": "wtc@google.com", "time": "Fri Jun 17 13:19:29 2022 -0700" }, "committer": { "name": "Wan-Teh Chang", "email": "wtc@google.com", "time": "Fri Jun 17 13:19:29 2022 -0700" }, "message": "Merge tag \u0027v3.4.0\u0027 into main branch\n\n2022-06-17 v3.4.0\n This release includes compression efficiency and perceptual quality\n improvements, speedup and memory optimizations, and some new features.\n There are no ABI or API breaking changes in this release.\n\n - New Features\n * New --dist-metric flag with \"qm-psnr\" value to use quantization\n matrices in the distortion computation for RD search. The default\n value is \"psnr\".\n * New command line option \"--auto-intra-tools-off\u003d1\" to make\n all-intra encoding faster for high bit rate under\n \"--deltaq-mode\u003d3\" mode.\n * New rate control library aom_av1_rc for real-time hardware\n encoders. Supports CBR for both one spatial layer and SVC.\n * New image format AOM_IMG_FMT_NV12 can be used as input to the\n encoder. The presence of AOM_IMG_FMT_NV12 can be detected at\n compile time by checking if the macro AOM_HAVE_IMG_FMT_NV12 is\n defined.\n * New codec controls for the encoder:\n o AV1E_SET_AUTO_INTRA_TOOLS_OFF. Only in effect if\n --deltaq-mode\u003d3.\n o AV1E_SET_RTC_EXTERNAL_RC\n o AV1E_SET_FP_MT. Only supported if libaom is built with\n -DCONFIG_FRAME_PARALLEL_ENCODE\u003d1.\n o AV1E_GET_TARGET_SEQ_LEVEL_IDX\n * New key-value pairs for the key-value API:\n o --auto-intra-tools-off\u003d0 (default) or 1. Only in effect if\n --deltaq-mode\u003d3.\n o --strict-level-conformance\u003d0 (default) or 1\n o --fp-mt\u003d0 (default) or 1. Only supported if libaom is built\n with -DCONFIG_FRAME_PARALLEL_ENCODE\u003d1.\n * New aomenc options (not supported by the key-value API):\n o --nv12\n\n - Compression Efficiency Improvements\n * Correctly calculate SSE for high bitdepth in skip mode, 0.2% to\n 0.6% coding gain.\n * RTC at speed 9/10: BD-rate gain of ~4/5%\n * RTC screen content coding: many improvements for real-time screen\n at speed 10 (quality, speedup, and rate control), up to high\n resolutions (1080p).\n * RTC-SVC: fixes to make intra-only frames work for spatial layers.\n * RTC-SVC: quality improvements for temporal layers.\n * AV1 RT: A new passive rate control strategy for screen content, an\n average of 7.5% coding gain, with some clips of 20+%. The feature\n is turned off by default due to higher bit rate variation.\n\n - Perceptual Quality Improvements\n * RTC: Visual quality improvements for high speeds (9/10)\n * Improvements in coding quality for all intra mode\n\n - Speedup and Memory Optimizations\n * ~10% speedup in good quality mode encoding.\n * ~7% heap memory reduction in good quality encoding mode for speed\n 5 and 6.\n * Ongoing improvements to intra-frame encoding performance on Arm\n * Faster encoding speed for \"--deltaq-mode\u003d3\" mode.\n * ~10% speedup for speed 5/6, ~15% speedup for speed 7/8, and\n ~10% speedup for speed 9/10 in real time encoding mode\n * ~20% heap memory reduction in still-picture encoding mode for\n 360p-720p resolutions with multiple threads\n * ~13% speedup for speed 6 and ~12% speedup for speed 9 in\n still-picture encoding mode.\n * Optimizations to improve multi-thread efficiency for still-picture\n encoding mode.\n\n - Bug Fixes\n * b/204460717: README.md: replace master with main\n * b/210677928: libaom disable_order is surprising for\n max_reference_frames\u003d3\n * b/222461449: -DCONFIG_TUNE_BUTTERAUGLI\u003d1 broken\n * b/227207606: write_greyscale writes incorrect chroma in highbd\n mode\n * b/229955363: Integer-overflow in linsolve_wiener\n * https://crbug.com/aomedia/2032\n * https://crbug.com/aomedia/2397\n * https://crbug.com/aomedia/2563\n * https://crbug.com/aomedia/2815\n * https://crbug.com/aomedia/3009\n * https://crbug.com/aomedia/3018\n * https://crbug.com/aomedia/3045\n * https://crbug.com/aomedia/3101\n * https://crbug.com/aomedia/3130\n * https://crbug.com/aomedia/3173\n * https://crbug.com/aomedia/3184\n * https://crbug.com/aomedia/3187\n * https://crbug.com/aomedia/3190\n * https://crbug.com/aomedia/3195\n * https://crbug.com/aomedia/3197\n * https://crbug.com/aomedia/3201\n * https://crbug.com/aomedia/3202\n * https://crbug.com/aomedia/3204\n * https://crbug.com/aomedia/3205\n * https://crbug.com/aomedia/3207\n * https://crbug.com/aomedia/3208\n * https://crbug.com/aomedia/3209\n * https://crbug.com/aomedia/3213\n * https://crbug.com/aomedia/3214\n * https://crbug.com/aomedia/3219\n * https://crbug.com/aomedia/3222\n * https://crbug.com/aomedia/3223\n * https://crbug.com/aomedia/3225\n * https://crbug.com/aomedia/3226\n * https://crbug.com/aomedia/3228\n * https://crbug.com/aomedia/3232\n * https://crbug.com/aomedia/3236\n * https://crbug.com/aomedia/3237\n * https://crbug.com/aomedia/3238\n * https://crbug.com/aomedia/3240\n * https://crbug.com/aomedia/3243\n * https://crbug.com/aomedia/3244\n * https://crbug.com/aomedia/3246\n * https://crbug.com/aomedia/3248\n * https://crbug.com/aomedia/3250\n * https://crbug.com/aomedia/3251\n * https://crbug.com/aomedia/3252\n * https://crbug.com/aomedia/3255\n * https://crbug.com/aomedia/3257\n * https://crbug.com/aomedia/3259\n * https://crbug.com/aomedia/3260\n * https://crbug.com/aomedia/3267\n * https://crbug.com/aomedia/3268\n * https://crbug.com/aomedia/3269\n * https://crbug.com/aomedia/3276\n * https://crbug.com/aomedia/3278\n * https://crbug.com/chromium/1290068\n * https://crbug.com/chromium/1303237\n * https://crbug.com/chromium/1304990\n * https://crbug.com/chromium/1321141\n * https://crbug.com/chromium/1321388\n * https://crbug.com/oss-fuzz/44846\n * https://crbug.com/oss-fuzz/44856\n * https://crbug.com/oss-fuzz/44862\n * https://crbug.com/oss-fuzz/44904\n * https://crbug.com/oss-fuzz/45056\n\nBug: aomedia:3281\nChange-Id: Ibd805631415036f5a403337e5032c9565dac319b\n", "tree_diff": [] }