for example ffmpeg command looks interoperable with
with how avidemux works somewhat
also lowers learning curves and also
allows for custom codec options not supported by ui yet
ffmpeg \
-loglevel "verbose" -v 99 \
\
-ss 00:00:32.400 -to 00:00:49.240 -i '/tmp/in.mkv' \
-ss 00:00:51.880 -to 00:00:59.040 -i '/tmp/in.mkv' \
-ss 00:01:00.600 -to 00:01:02.200 -i '/tmp/in.mkv' \
-filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0][2:v:0][2:a:0]concat=n=3:v=1:a=1[outv][outa];[outv]hqdn3d=luma_spatial=2.0[outvnr]" \
-pix_fmt yuv420p \
-c:v:0 libx265 -x265-params crf=27.0:rd=6:me="star":subme=7:rect=1:amp=1:max-merge=5:rc-lookahead=250:bframes=16:b-adapt=2:ref=16:allow-non-conformance=1:tu-intra-depth=4:tu-inter-depth=4:weightb=1:b-intra=1:cu-lossless=1:rdoq-level=1:log-level=full:wpp=0:--lookahead-slices=1:frame-threads=1:keyint=1080 \
-sws_flags lanczos+lanczos+print_info+accurate_rnd+full_chroma_int+bitexact \
-c:a:0 libopus -b:a:0 140k \
-map "[outvnr]" \
-map "[outa]" \
'/tmp/out.ffmpeg.mkv'