2019-01-31 v1.8.0 "Northern Shoveler Duck" This release focused on encoding performance for realtime and VOD use cases. - Upgrading: This adds and improves several vp9 controls. Most are related to SVC: VP9E_SET_SVC_FRAME_DROP_LAYER: - Frame dropping in SVC. VP9E_SET_SVC_INTER_LAYER_PRED: - Inter-layer prediction in SVC. VP9E_SET_SVC_GF_TEMPORAL_REF: - Enable long term temporal reference in SVC. VP9E_SET_SVC_REF_FRAME_CONFIG/VP9E_GET_SVC_REF_FRAME_CONFIG: - Extend and improve this control for better flexibility in setting SVC pattern dynamically. VP9E_SET_POSTENCODE_DROP: - Allow for post-encode frame dropping (applies to non-SVC too). VP9E_SET_SVC_SPATIAL_LAYER_SYNC: - Enable spatial layer sync frames. VP9E_SET_SVC_LAYER_ID: - Extend api to specify temporal id for each spatial layers. VP9E_SET_ROI_MAP: - Extend Region of Interest functionality to VP9. - Enhancements: 2 pass vp9 encoding has improved substantially. When using --auto-alt-ref=6, we see approximately 8% for VBR and 10% for CQ. When using --auto-alt-ref=1, the gains are approximately 4% for VBR and 5% for CQ. For real-time encoding, speed 7 has improved by ~5-10%. Encodes targeted at screen sharing have improved when the content changes significantly (slide sharing) or scrolls. There is a new speed 9 setting for mobile devices which is about 10-20% faster than speed 8. - Bug fixes: VP9 denoiser issue. VP9 partition issue for 1080p. VP9 rate control improvments. Postprocessing Multi Frame Quality Enhancement (MFQE) issue. VP8 multithread decoder issues. A variety of fuzzing issues.
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