[gsttreamer-vaapi][h265 encode] set different quality-factor but get same result in QVBR mode.

[feiwan1]

When set different quality-factor values in QVBR bitrate-control mode, while the output encoded files get the same md5.

Cmd:
$ gst-launch-1.0 filesrc location=honeybee640x480.nv12 ! videoparse format=nv12 width=640 height=480 ! vaapih265enc rate-control=qvbr quality-factor=10 bitrate=1500 target-percentage=100 ! filesink location=gst.qvbr.10.1500.h265

$ gst-launch-1.0 filesrc location=honeybee640x480.nv12 ! videoparse format=nv12 width=640 height=480 ! vaapih265enc rate-control=qvbr quality-factor=30 bitrate=1500 target-percentage=100 ! filesink location=gst.qvbr.30.1500.h265

$md5sum *.h265
1e95b9d1ebb3e54b1fe0f62e9ce36ea3 gst.qvbr.10.1000.h265
1e95b9d1ebb3e54b1fe0f62e9ce36ea3 gst.qvbr.30.1000.h265

Note: This need gstreamer-vaapi from:
https://gitlab.freedesktop.org/wangfei/gstreamer-vaapi hevc_brc branch.

[uartie]

Any progress on fixing this?

[uartie]

@XinfengZhang can we get some progress here for HEVC case? Also #379 may be related for AVC case.

[uartie]

cc: @onabiull @Xiaogangli-intel

[Xiaogangli-intel]

This issue should already be fixed, and there are no activities on it for more than 1 year. Close it, if you still meet this issue, please fill a new issue, thank you.