![]() ![]() Both of these AQ modes are enabled by default, and -qp-mode is set to relative-load when -lookahead_depth >= 1. The Alveo U30 card supports two types of AQ: Spatial Adaptive Quantization and Temporal Adaptive Quantization. It exploits the fact that the human eye is more sensitive to certain regions of a frame and redistributes more bits to those regions. The QP for each frame is determined by the rate control, and adaptive quantization (AQ) adjusts QP on top of that for different regions within a frame. This tool improves the visual quality by changing the quantization parameter (QP) within a frame. Using FFmpeg for Video Scaling on Alveo U30.Considerations for Decoding and Encoding 4K Streams.Using FFmpeg for Video Encoding and Decoding on Alveo U30.
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