Dynamic KeyFrame - 2023.1 English

H.264/H.265 Video Codec Unit v1.2 Solutions LogiCORE IP Product Guide (PG252)

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2023.1 English

Dynamic Keyframe is the ability to force the IDR picture while the encoder is active. The VCU encoder can insert Keyframe (IDR picture) dynamically in normal latency pipelines, as well as in the low latency (LLP1) pipelines.

To inset a key frame at frame number 35:
zynqmp_vcu_encode -w 3840 -h 2160 -e avc -b 4 -o /run/op.h264 -i /run/input.yuv -d KF:35
To insert a key frame in LLP1 based pipeline with low-delay-P GOP mode and horizontal GDR at frame number 100:
zynqmp_vcu_encode -w 3840 -h 2160 -e hevc -f 60 -s 5 -c 2130706433 -v 2 -a 240 -o /run/op.hevc -i /run/input.yuv -d KF:100