New AQ mode (-aq-mode 4) with variance and edge information. Output change in -analysis-load at inter-refine levels 2 and 3.įixed bug in -limit-tu 3 and 4 while loading co-located CU’s TU depth.ģ-level hierarchical motion estimation using -hme and -hme-search. hdr-opt will be deprecated in the upcoming major release. hdr will be deprecated in the upcoming major release.
New API function x265_encoder_reconfig_zone() to invoke zone reconfiguration dynamically. Improved VBV lookahead to eliminate blocky artifacts in Intra frames coming towards end of the title. Turnaround time of ABR encoding can be reduced by properly leveraging these options. Introduced -analysis-save-reuse-level and -analysis-load-reuse-level to de-couple reuse levels of -analysis-save and -analysis-load. Improved performance of AQ mode 4 by reducing memory foot print. hme-range to modify search range for HME levels L0, L1, and L2. hist-scenecut to enable the feature and -hist-threshold (optional) to provide threshold for determining scene cuts. Improved scene-cut detection using edge and chroma histograms. scenecut-aware-qp, -scenecut-window and -max-qp-delta to enable boundary aware frame quantization, to set window size (optional) and to set QP offset (optional). This leverages the inability of HVS to perceive fine details during scene changes and saves bits. frame-dup to enable frame duplication and -dup-threshold to set the threshold for frame similarity (optional).īoundary aware quantization to cut off bits from frames following scene-cut. Incorrect analysis propagation in multi-level save-load architecture.įailure in detecting NUMA packages installed in non-standard directories.Īdaptive frame duplication to identify and skip encoding of near-identical frames and signal the duplication info to the decoder via pic_struct SEI. Multi-pass encode failures with -frame-dup.Ĭorrupted bitstreams with -hist-scenecut when input depth and internal bit-depth differ.
#MFRAME CLIPY 1080P#
The speed-up over no-asm version for 1080p encodes medium preset is ~15% in a 16 core H/W. The savings in the bitrate is ~1.72% with visual improvement in quality in the initial 1-2 secs.įaster ARM64 encodes enabled by ASM contributions from Huawei. Improved efficiency in 2-pass rate-control algorithm. Shows ~65% savings in the over-all turn-around time required for the generation of a typical Apple HLS ladder in Intel(R) Xeon(R) Platinum 8280 CPU 2.70GHz over a sequential ABR-ladder generation approach that leverages save-load architecture. Experimental feature.Īpplication-level feature -abr-ladder for automating efficient ABR ladder generation. rskip level 2 enables the feature and -rskip-edge-threshold denotes the minimum expected edge-density percentage within the CU, below which the recursion is skipped. QP spikes in the row-level VBV rate-control when WPP enabled.Įdge-aware quadtree partitioning to terminate CU depth recursion based on edge information. Incorrect VBV lookahead in -analysis-load + -scale-factor.Įncoder hang when VBV is used with slices. New x265_param options -min-vbv-fullness and -max-vbv-fullness to control min and max VBV fullness. Support for RADL pictures at IDR scene cuts: Improves coding efficiency with no significant impact on performance.īidirectional scene cut aware Frame Quantizer Selection: Saves bits than forward masking with no noticeable perceptual quality difference.Īdditions to x265_param structure to support the newly added features and encoder enhancements. Improved hist-based scene cut algorithm: Reduces false positives by leveraging motion and scene transition info. Real-time VBV for ABR (Average BitRate) encodes in –pass 2 using -vbv-live-multi-pass: Improves VBV compliance with no significant impact on coding efficiency.