image artefacts on qtgmc-ing .MTS files

[i4004]

has no audio (the "empty audio queue" issue i mentioned).

output of this file doesn't have the same artefacts (better to say not in same places as video i posted above), but they're still there....seems to be happening only during the first second.....

let me reiterate avs version (in hybrid) has artefacts during whole video.

it's "Hybrid_2023.12.22.1_SETUP" running on 64bit win11 on 5600G.

thanks

ps/ i hope you're working afternoon shift, or have rather flexible work schedule... 
ps2/ i think i'll try some other video compression in meantime