Nothing to do, check usage "gpac -h"
gpac - GPAC command line filter engine - version 26.03-DEV-rev18-ge6d309847-master
(c) 2000-2024 Telecom Paris distributed under LGPL v2.1+ - https://gpac.io

Please cite our work in your research:
	GPAC Filters: https://doi.org/10.1145/3339825.3394929
	GPAC: https://doi.org/10.1145/1291233.1291452

session error: Bad Parameter
No filter chain found for PID A2 in filter mp4dmx to any loaded filters - Will try to remove
[CMAF] No color info present in visual track, defaulting to BT709


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/usr/local/bin/gpac -i "../mezzanine/releases/4/tos_L1_1920x1080@60_30.mp4":#StartNumber=-2000000:#Representation=1:#IsoBrand=vvc1:FID=GEN1  ffsws:osize=1920x1080:SID=GEN1 @ enc:gfloc:c=vvc:b=8000k:bf=2:fintra=2:g=120:profile=main10:color_primaries=9:color_trc=16:colorspace=9::vvenc-params="refreshsec=2:refreshtype=idr"::FID=V0 --bs_switch=off  -o output/vvc1_sets/15_30_60/t1/2026-02-13/stream.mpd:!deps:profile=live:ctmode=negctts:cmaf=cmf2:segdur=2:tpl:template=\$Init=1/init\$\$Segment=1/\$:stl:cdur=2:SID=V0

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