Intel(R) Core(TM) Ultra 7 155U cpu 4K 420 10bit encode/decode fps is low

fujianfang — Mon, 16 Jun 2025 05:24:32 GMT

when we use Intel(R) Core(TM) Ultra 7 155U cpu, we met a issue.

1.decode 4K 420 10bit fps is low, decode fps is only 43.

/opt/intel/media/share/vpl/samples/_bin/sample_decode h265 -i tm1000v3_2160p5994_20mbps_yuv420p10bit.h265 -gpucopy::on -async 4 -o /dev/null -hw

2.encode 4K 420 10bit fps is low, encode fps is only 43

/opt/intel/media/share/vpl/samples/_bin/sample_encode h265 -gpucopy::on -p010 -i /tmp/yuv/test.yuv -o ./test.h265 -w 3840 -h 2160 -dstw 3840 -dsth 2160 -b 30000 -hw -async 4 -lowpower:on -u speed -timeout 60 -device /dev/dri/renderD128

3.but encode 4K 420 8bit fps is high, encode fps is 173

/opt/intel/media/share/vpl/samples/_bin/sample_encode h265 -gpucopy::on -i /tmp/yuv/4208bit.yuv -o ./test.h265 -w 3840 -h 2160 -dstw 3840 -dsth 2160 -b 30000 -hw -async 2 -lowpower:on -u speed -timeout 60

onevpl use latest version: 2024Q4 .https://github.com/intel/vpl-gpu-rt/releases/tag/intel-onevpl-24.4.4

Is it a known issue?

os version ubuntu 24.04
kernel: 6.8.0-53-generic or 6.11.0-17-generic all have issue.

topic Intel(R) Core(TM) Ultra 7 155U cpu 4K 420 10bit encode/decode fps is low in Intel® oneAPI DPC++/C++ Compiler

Intel(R) Core(TM) Ultra 7 155U cpu 4K 420 10bit encode/decode fps is low