[HELP] Hybrid introducing audio delay that is not present in source material

[Selur]

using a delay of 1000ms (- encoder compensation) I get:

MP4Box -add "E:\Temp\2021-10-15@13_30_55_0410_04.265"#video:fps=25:name="":lang="" -brand hvc1 -add "E:\Temp\iId_6_aid_1_DELAY_950ms_2021-10-15@13_30_55_0410_02.aac"#audio:delay=950:name="":lang="" -mpeg4 -itags tool="Hybrid 2021.10.10.1" -tmp "E:\Temp" -new "E:\Output\2021-10-15@13_30_55_0410__05.mp4"

and the audio plays delayed by ~1s.

Using a delay of -1000ms (-encoder compensation) I get:

MP4Box -add "E:\Temp\2021-10-15@13_33_12_2410_04.265"#video:fps=25:delay=1050:name="":lang="" -brand hvc1 -add "E:\Temp\iId_7_aid_1_ms_2021-10-15@13_33_12_2410_02.aac"#audio:name="":lang="" -mpeg4 -itags tool="Hybrid 2021.10.10.1" -tmp "E:\Temp" -new "E:\Output\2021-10-15@13_33_12_2410__06.mp4"

and audio plays ~1s too early.

So unlike your example, here the delay seems to work. (I checked I'm using the same MP4Box&Co version that I packed with the dev version.)
How do attached files look to you? Are they delayed or do they play (and look) in sync?

Cu Selur