[HELP] after encoding ass into mp4, but there is no subtitle at all

[Selur]

yeah, the dev version which is that you send me before, so which version should i use, please recommend.

The debug output wasn't created with the dev version,...
-> you should use the dev version.

i also remux another sup subtitle in it, but can't display sup subtile, even i've switched to the SUP, but can't see SUP, only can see the embeded MP4 subtitle.

no clue what you tried exactly and since it's not Hybrid related I can't really help.