Encoding Video at Constant Frame Rate

[Selur]

Don't see a problem with the calls.
Hybrid does not add vfr time codes.
Only thing 'uncommon' is that ffmpeg being used for mkv muxing:

"D:\Programs\Hybrid\64bit\ffmpeg.exe" -y -threads 8 -i "F:\VideoTests\Encoders\Magnum\Input.23fp_BD.1080p.10bit.AAC.2.0.x265_5m.mkv" -map 0:1 -vn -sn -acodec copy -map_metadata -1 -metadata encoding_tool="Hybrid 2020.10.11.1" "F:\VideoTests\Encoders\Magnum\iId_6_aid_0_lang_en_DELAY_-33ms_2020-12-27@09_10_12_3910_01.aac"

so may be MediaInfo has a problem with that.
-> update you Hybrid, check that you haven't enabled 'Config->Container->FFmpeg for .mkv muxing'

Cu Selur