Nothing to do, check usage "gpac -h"
gpac - GPAC command line filter engine - version 2.5-DEV-rev1517-g120c6944f-buildbot-route-repair
(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
x265 [info]: HEVC encoder version 4.1+1-1d117be
x265 [info]: build info [Mac OS X][clang 16.0.0][64 bit] 10bit
x265 [info]: using cpu capabilities: NEON Neon_DotProd Neon_I8MM
x265 [warning]: lowering VBV buffer size to 20000Kb
x265 [info]: Main 10 profile, Level-4.1 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices                              : 1
x265 [info]: frame threads / pool features       : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 3
x265 [info]: Lookahead / bframes / badapt        : 20 / 2 / 0
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress            : ABR-8000 kbps / 0.60
x265 [info]: VBV/HRD buffer / max-rate / init    : 20000 / 12000 / 0.900
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing lslices=6 deblock sao
x265 [info]: tools: dhdr10-info
x265 [info]: frame I:      3, Avg QP:26.11  kb/s: 13131.60
x265 [info]: frame P:     96, Avg QP:25.95  kb/s: 8873.09 
x265 [info]: frame B:    189, Avg QP:31.91  kb/s: 3747.76 
x265 [info]: Weighted P-Frames: Y:14.6% UV:14.6%

encoded 288 frames in 21.89s (13.16 fps), 5553.95 kb/s, Avg QP:29.86


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/usr/local/bin/gpac -i "/Users/ndvx/code/cta_wave/mezzanine/5/splice_ad_bbb_AD-B1_1920x1080@50_5.76.mp4":#StartNumber=-2000000:#Representation=1:#IsoBrand=chh1:FID=GEN1_splice_ad  ffsws:osize=1920x1080:ofmt=yuv420_10:SID=GEN1_splice_ad @ enc:gfloc:c=libx265:b=8000k:bf=2:fintra=48/25:g=96:profile=main10:color_primaries=1:color_trc=1:colorspace=1::x265-params="scenecut=0:no-open-gop=1:b-adapt=0:level-idc=41:no-high-tier=1:vbv-bufsize=24000:vbv-maxrate=12000:sar=1\:1"::FID=V0 --bs_switch=off  -o batch/chh1_sets/12.5_25_50/splice_ad/2025-06-30/stream.mpd:profile=live:ctmode=negctts:cmaf=cmf2:segdur=48/25:tpl:template=\$Init=1/init\$\$Segment=1/\$:stl:cdur=48/25:SID=V0

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