[FFmpeg-user] [ffmpeg-user] what do Ignoring outlier non primary stream endtime 1813.839966 means ?

[cavelier]

Hi; 
i don't find any exponations in documentation about this messages of
outlier streams...
The consequences are that the film runs normally but about a few minutes
picture becomes black , the film carries only with sound and black
image. Perhaps the encoding stops after a few minutes.
Is the f concat or me=umh option the origin ?
 ffmpeg:
ffmpeg version 6.0.1 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 4.9.2 (GCC) [mov,mp4,m4a,3gp,3g2,mj2 @ 0x16e4740]

Errors messages in green in  Konsole:
Ignoring outlier non primary stream endtime 1813.839966
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x16e4740]Ignoring outlier non primary
stream duration 1806.785034 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x16e4740]
Ignoring outlier non primarystream endtime 1813.839966
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x16e4740]Ignoring outlier non primary
stream duration 1806.785034
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x16e4740] Auto-inserting h264_mp4toannexb
bitstream filter [h264 @ 0x16e8d00] Reinit context to
1920x1088,pix_fmt: yuv420p

Complete commande 's strings :
ffmpeg -hide_banner -y -loglevel verbose -fix_sub_duration -f concat
-safe 0 -i ffconcat.txt -map 0:v:0 -max_interleave_delta 0 -muxpreload
0 -muxdelay 0 -c:v libx264 -profile:v main -level 4.0 -tune film
-preset medium -x264-params
"tff=1:force-cfr=1:fps=25/1:b_adapt=1:crf=23:ref=4:me=umh" -vf
unsharp=luma_msize_x=7:luma_msize_y=7:luma_amount=1.2,fps=25/1,eq=contrast=1::gamma=1:saturation=1:gamma_weight=0.2:brightness=0,hqdn3d=2:1:2:2,fade=t=out:st=2472.76:d=2"
-fps_mode cfr -map 0:a -c:a libfdk_aac -b:a 192k -af
"aresample=async=1:min_hard_comp=0.100000:first_pts=0,afade=t=out:st=2472.76:d=2"
-map "0:s?" -c:s copy -metadata:s:a:0 "language=fre" -metadata:s:a:1
"language=qaa" -metadata:s:a:2 "language=fra" -metadata:s:a:2
"title=visual impaired" -metadata:s:s:0 "language=fre" -metadata:s:s:0
"title=hearing impaired" -metadata:s:s:1 "language=fre" -f mp4
output.mp4.

$ cat ffconcat.txt 
file ./temp0.mp4
file ./temp2.mp4
file ./temp4.mp4

-- 
cordialement jean-jacques. 
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