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

[Selur]

If you want the effect of the lower right you have to manually adjust the Vapoursynth script using the custom option, since Hybrid does not support the xy-VSFilter renderer.
You wound need to download the dll, extract it and use something like

core.std.LoadPlugin(path="I:/Hybrid/64bit/vsfilters/SubtitleFilter/xy-VSFilter/xy-VSFilter.dll")
clip = core.xyvsf.TextSub(clip=clip, file="C:/Users/Selur/Desktop/DropMeFiles_L9QtO/clip.ass")

in a custom code section.

Cu Selur