[onevpl_enctools] when add "-extbrc 1 -strict -1" on ffmpeg cmd, VBR and CBR mode output same clips

[wenqingx]

When setting "- extbrc 1- restrict -1", the output bitrate, md5, psnr are the same
CBR:
$ffmpeg -v verbose -hwaccel qsv -qsv_device /dev/dri/renderD128 -f rawvideo -pix_fmt yuv420p -s:v 1024x768 -r 30 -i /h1024x768.yuv -frames:v 500 -c:v hevc_qsv -b:v 600000 -maxrate 600000 -extbrc 1 -strict -1 -vsync passthrough -y output.h265
VBR:
$ffmpeg -v verbose -hwaccel qsv -qsv_device /dev/dri/renderD128 -f rawvideo -pix_fmt yuv420p -s:v 1024x768 -r 30 -i 1024x768.yuv -frames:v 500 -c:v hevc_qsv -b:v 600000 -maxrate 1200000 -extbrc 1 -strict -1 -vsync passthrough -y output.h265

Removing any one of "-extbrc 1 -strict -1 " would result in a different outcome, which is expected.
CBR:
$ffmpeg -v verbose -hwaccel qsv -qsv_device /dev/dri/renderD128 -f rawvideo -pix_fmt yuv420p -s:v 1024x768 -r 30 -i 1024x768.yuv -frames:v 500 -c:v hevc_qsv -b:v 600000 -maxrate 600000 -extbrc 1 -vsync passthrough -y output.h265
VBR:
$ffmpeg -v verbose -hwaccel qsv -qsv_device /dev/dri/renderD128 -f rawvideo -pix_fmt yuv420p -s:v 1024x768 -r 30 -i 1024x768.yuv -frames:v 500 -c:v hevc_qsv -b:v 600000 -maxrate 1200000 -extbrc 1 vsync passthrough -y output.h265

my test env:
OS:22.04
kernel:6.2.0-26-generic
platform:DG2 (A380)

media-stack:
libva:intel/libva@63d2b22
gmmlib:intel/gmmlib@5fb4180
media-driver:intel/media-driver@a9f2724
libvpl:2274efc
vpl-runtime:intel/vpl-gpu-rt@852fa9f
ffmpeg:FFmpeg/FFmpeg@3047f05

I think this should be unrelated to the format of the output , and AV1 and AVC should also have the same problem.

[wenqingx]

BTW:At present, I am not sure if this is a Regression, and I have not found a good node.

[akwrobel]

These tools are owned by the runtime team, @wenqingx please file this issue with them here: https://github.com/oneapi-src/oneVPL-intel-gpu/issues

[wenqingx]

These tools are owned by the runtime team, @wenqingx please file this issue with them here: https://github.com/oneapi-src/oneVPL-intel-gpu/issues

thanks, i file new one,intel/vpl-gpu-rt#311
and close this issue.